feat: 初始化FTP中转双向同步工具并打通双端同步主链路

- 新增 Spring Boot 2.7.18 + JDK 1.8 工程骨架
- 引入 H2、JGit、Commons Net 等核心依赖并补充 Maven 配置
- 增加 application.properties 及 dev-agent/prod-agent 双 profile 配置
- 新增同步任务、检查点、ACK 的 H2 表结构与基础持久化服务
- 实现 FTP 上传、下载、列目录、移动、删除及原子上传能力
- 实现 Git clone/pull/checkout/export/commit/push 能力
- 实现同步包打包、解包、manifest 生成与内容哈希校验
- 实现生产 push/pull 接口调用基础能力
- 打通开发侧与生产侧协调流程及 ACK 回执处理
- 补充总体设计与详细设计文档
- 修正 .gitignore，忽略 target、.m2、work、data 等构建与运行目录

docs/ftp-sync-tool-detail-design.md

@@ -343,17 +343,23 @@ spring.jpa.hibernate.ddl-auto=none
 - 更新检查点
 - 记录 ack 回执
 
-### 8.2 当前未实现的业务服务
+### 8.2 当前已实现的业务服务
 
-当前骨架还没有把以下真实能力写完：
+本轮代码已经补上以下真实能力：
 
-- FTP 上传、下载、列目录、重命名
+- FTP 上传、下载、列目录、删除、移动、原子重命名上传
 - Git clone / pull / checkout / commit / push
 - zip 打包与解包
-- manifest 生成与校验
-- 生产 `push` / `pull` 接口调用
+- manifest 生成与内容哈希校验
+- 生产 `push` / `pull` 接口调用骨架
 
-这些是下一步真正要补的业务实现层。
+当前对应实现文件包括：
+
+- [FtpClientService.java](e:/AIcoding/FtpTool/src/main/java/com/ftptool/sync/service/FtpClientService.java)
+- [GitClientService.java](e:/AIcoding/FtpTool/src/main/java/com/ftptool/sync/service/GitClientService.java)
+- [PackageService.java](e:/AIcoding/FtpTool/src/main/java/com/ftptool/sync/service/PackageService.java)
+- [ProdConfigApiService.java](e:/AIcoding/FtpTool/src/main/java/com/ftptool/sync/service/ProdConfigApiService.java)
+- [SyncMetadataService.java](e:/AIcoding/FtpTool/src/main/java/com/ftptool/sync/service/SyncMetadataService.java)
 
 ## 9. 当前调度层设计
 
@@ -368,7 +374,7 @@ spring.jpa.hibernate.ddl-auto=none
 
 - 已按 `dev-agent` profile 进行隔离
 - 已绑定 cron 表达式
-- 当前仅输出清晰日志和待办动作
+- 已串联 Git 拉取、包构建、FTP 上传、FTP 消费、Git 提交和 ACK 上传
 
 ### 9.2 生产侧调度
 
@@ -381,7 +387,19 @@ spring.jpa.hibernate.ddl-auto=none
 
 - 已按 `prod-agent` profile 进行隔离
 - 已绑定 cron 表达式
-- 当前仅输出清晰日志和待办动作
+- 已串联 FTP 消费、生产 `push` 接口调用、生产 `pull` 接口调用、包构建和 ACK 上传
+
+## 9.3 当前接口假设
+
+由于你还没有给出生产 `push/pull` 接口的正式协议，本轮实现采用以下默认假设：
+
+- 生产 `push` 接口使用 `multipart/form-data`
+- 上传字段包含 `file`、`traceId`、`direction`、`sourceVersion`、`contentHash`
+- 生产 `pull` 接口使用 `HTTP GET`
+- `pull` 返回原始字节内容，当前默认保存为 `prod-config.json`
+- 如果响应头里存在 `X-Config-Version` 或 `ETag`，优先用它作为来源版本号
+
+后续如果你提供正式接口文档，再把这部分对齐为最终协议即可。
 
 ## 10. 当前目录结构
 

pom.xml

@@ -19,7 +19,7 @@
 
     <properties>
         <java.version>1.8</java.version>
-        <jgit.version>6.10.0.202406032230-r</jgit.version>
+        <jgit.version>5.13.3.202401111512-r</jgit.version>
         <commons-net.version>3.11.1</commons-net.version>
     </properties>
 

src/main/java/com/ftptool/sync/config/SyncProperties.java

@@ -13,6 +13,12 @@ public class SyncProperties {
     private String prodToDevStagingDir;
     private int maxRetryCount = 5;
     private int ackScanBatchSize = 50;
+    private String remoteDevToProdOutDir;
+    private String remoteDevToProdAckDir;
+    private String remoteProdToDevOutDir;
+    private String remoteProdToDevAckDir;
+    private String remoteFailedDir;
+    private String pullResponseFileName;
 
     public String getNodeId() {
         return nodeId;
@@ -77,4 +83,52 @@ public class SyncProperties {
     public void setAckScanBatchSize(int ackScanBatchSize) {
         this.ackScanBatchSize = ackScanBatchSize;
     }
+
+    public String getRemoteDevToProdOutDir() {
+        return remoteDevToProdOutDir;
+    }
+
+    public void setRemoteDevToProdOutDir(String remoteDevToProdOutDir) {
+        this.remoteDevToProdOutDir = remoteDevToProdOutDir;
+    }
+
+    public String getRemoteDevToProdAckDir() {
+        return remoteDevToProdAckDir;
+    }
+
+    public void setRemoteDevToProdAckDir(String remoteDevToProdAckDir) {
+        this.remoteDevToProdAckDir = remoteDevToProdAckDir;
+    }
+
+    public String getRemoteProdToDevOutDir() {
+        return remoteProdToDevOutDir;
+    }
+
+    public void setRemoteProdToDevOutDir(String remoteProdToDevOutDir) {
+        this.remoteProdToDevOutDir = remoteProdToDevOutDir;
+    }
+
+    public String getRemoteProdToDevAckDir() {
+        return remoteProdToDevAckDir;
+    }
+
+    public void setRemoteProdToDevAckDir(String remoteProdToDevAckDir) {
+        this.remoteProdToDevAckDir = remoteProdToDevAckDir;
+    }
+
+    public String getRemoteFailedDir() {
+        return remoteFailedDir;
+    }
+
+    public void setRemoteFailedDir(String remoteFailedDir) {
+        this.remoteFailedDir = remoteFailedDir;
+    }
+
+    public String getPullResponseFileName() {
+        return pullResponseFileName;
+    }
+
+    public void setPullResponseFileName(String pullResponseFileName) {
+        this.pullResponseFileName = pullResponseFileName;
+    }
 }

src/main/java/com/ftptool/sync/model/PackageBuildResult.java

@@ -0,0 +1,28 @@
+package com.ftptool.sync.model;
+
+import java.nio.file.Path;
+
+public class PackageBuildResult {
+
+    private final Path zipFile;
+    private final String packageName;
+    private final String contentHash;
+
+    public PackageBuildResult(Path zipFile, String packageName, String contentHash) {
+        this.zipFile = zipFile;
+        this.packageName = packageName;
+        this.contentHash = contentHash;
+    }
+
+    public Path getZipFile() {
+        return zipFile;
+    }
+
+    public String getPackageName() {
+        return packageName;
+    }
+
+    public String getContentHash() {
+        return contentHash;
+    }
+}

src/main/java/com/ftptool/sync/model/PackageManifest.java

@@ -0,0 +1,68 @@
+package com.ftptool.sync.model;
+
+public class PackageManifest {
+
+    private String traceId;
+    private SyncDirection direction;
+    private String sourceEnv;
+    private String sourceVersion;
+    private String contentHash;
+    private String createdAt;
+    private String packageName;
+
+    public String getTraceId() {
+        return traceId;
+    }
+
+    public void setTraceId(String traceId) {
+        this.traceId = traceId;
+    }
+
+    public SyncDirection getDirection() {
+        return direction;
+    }
+
+    public void setDirection(SyncDirection direction) {
+        this.direction = direction;
+    }
+
+    public String getSourceEnv() {
+        return sourceEnv;
+    }
+
+    public void setSourceEnv(String sourceEnv) {
+        this.sourceEnv = sourceEnv;
+    }
+
+    public String getSourceVersion() {
+        return sourceVersion;
+    }
+
+    public void setSourceVersion(String sourceVersion) {
+        this.sourceVersion = sourceVersion;
+    }
+
+    public String getContentHash() {
+        return contentHash;
+    }
+
+    public void setContentHash(String contentHash) {
+        this.contentHash = contentHash;
+    }
+
+    public String getCreatedAt() {
+        return createdAt;
+    }
+
+    public void setCreatedAt(String createdAt) {
+        this.createdAt = createdAt;
+    }
+
+    public String getPackageName() {
+        return packageName;
+    }
+
+    public void setPackageName(String packageName) {
+        this.packageName = packageName;
+    }
+}

src/main/java/com/ftptool/sync/model/PackageReadResult.java

@@ -0,0 +1,22 @@
+package com.ftptool.sync.model;
+
+import java.nio.file.Path;
+
+public class PackageReadResult {
+
+    private final PackageManifest manifest;
+    private final Path configDirectory;
+
+    public PackageReadResult(PackageManifest manifest, Path configDirectory) {
+        this.manifest = manifest;
+        this.configDirectory = configDirectory;
+    }
+
+    public PackageManifest getManifest() {
+        return manifest;
+    }
+
+    public Path getConfigDirectory() {
+        return configDirectory;
+    }
+}

src/main/java/com/ftptool/sync/model/ProdPullResult.java

@@ -0,0 +1,28 @@
+package com.ftptool.sync.model;
+
+import java.nio.file.Path;
+
+public class ProdPullResult {
+
+    private final Path contentDirectory;
+    private final String sourceVersion;
+    private final String contentHash;
+
+    public ProdPullResult(Path contentDirectory, String sourceVersion, String contentHash) {
+        this.contentDirectory = contentDirectory;
+        this.sourceVersion = sourceVersion;
+        this.contentHash = contentHash;
+    }
+
+    public Path getContentDirectory() {
+        return contentDirectory;
+    }
+
+    public String getSourceVersion() {
+        return sourceVersion;
+    }
+
+    public String getContentHash() {
+        return contentHash;
+    }
+}

src/main/java/com/ftptool/sync/model/RemoteFileInfo.java

@@ -0,0 +1,20 @@
+package com.ftptool.sync.model;
+
+public class RemoteFileInfo {
+
+    private final String name;
+    private final String path;
+
+    public RemoteFileInfo(String name, String path) {
+        this.name = name;
+        this.path = path;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getPath() {
+        return path;
+    }
+}

src/main/java/com/ftptool/sync/model/SyncAckFile.java

@@ -0,0 +1,68 @@
+package com.ftptool.sync.model;
+
+public class SyncAckFile {
+
+    private String traceId;
+    private SyncDirection direction;
+    private String sourceVersion;
+    private String ackSide;
+    private String ackStatus;
+    private String message;
+    private String processedAt;
+
+    public String getTraceId() {
+        return traceId;
+    }
+
+    public void setTraceId(String traceId) {
+        this.traceId = traceId;
+    }
+
+    public SyncDirection getDirection() {
+        return direction;
+    }
+
+    public void setDirection(SyncDirection direction) {
+        this.direction = direction;
+    }
+
+    public String getSourceVersion() {
+        return sourceVersion;
+    }
+
+    public void setSourceVersion(String sourceVersion) {
+        this.sourceVersion = sourceVersion;
+    }
+
+    public String getAckSide() {
+        return ackSide;
+    }
+
+    public void setAckSide(String ackSide) {
+        this.ackSide = ackSide;
+    }
+
+    public String getAckStatus() {
+        return ackStatus;
+    }
+
+    public void setAckStatus(String ackStatus) {
+        this.ackStatus = ackStatus;
+    }
+
+    public String getMessage() {
+        return message;
+    }
+
+    public void setMessage(String message) {
+        this.message = message;
+    }
+
+    public String getProcessedAt() {
+        return processedAt;
+    }
+
+    public void setProcessedAt(String processedAt) {
+        this.processedAt = processedAt;
+    }
+}

src/main/java/com/ftptool/sync/orchestrator/DevSyncCoordinator.java

@@ -3,11 +3,32 @@ package com.ftptool.sync.orchestrator;
 import com.ftptool.sync.config.FtpProperties;
 import com.ftptool.sync.config.GitRepoProperties;
 import com.ftptool.sync.config.SyncProperties;
+import com.ftptool.sync.entity.SyncTask;
+import com.ftptool.sync.model.PackageBuildResult;
+import com.ftptool.sync.model.PackageManifest;
+import com.ftptool.sync.model.PackageReadResult;
+import com.ftptool.sync.model.RemoteFileInfo;
+import com.ftptool.sync.model.SyncAckFile;
+import com.ftptool.sync.model.SyncDirection;
+import com.ftptool.sync.model.SyncStatus;
+import com.ftptool.sync.service.AckFileService;
+import com.ftptool.sync.service.AckService;
+import com.ftptool.sync.service.CheckpointService;
+import com.ftptool.sync.service.FtpClientService;
+import com.ftptool.sync.service.GitClientService;
+import com.ftptool.sync.service.PackageService;
+import com.ftptool.sync.service.SyncMetadataService;
+import com.ftptool.sync.service.SyncTaskService;
+import com.ftptool.sync.service.WorkDirectoryService;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.context.annotation.Profile;
 import org.springframework.stereotype.Service;
 
+import java.nio.file.Path;
+import java.util.List;
+import java.util.Optional;
+
 @Service
 @Profile("dev-agent")
 public class DevSyncCoordinator {
@@ -17,18 +38,46 @@ public class DevSyncCoordinator {
     private final SyncProperties syncProperties;
     private final GitRepoProperties gitRepoProperties;
     private final FtpProperties ftpProperties;
+    private final WorkDirectoryService workDirectoryService;
+    private final GitClientService gitClientService;
+    private final PackageService packageService;
+    private final FtpClientService ftpClientService;
+    private final SyncTaskService syncTaskService;
+    private final CheckpointService checkpointService;
+    private final AckFileService ackFileService;
+    private final AckService ackService;
+    private final SyncMetadataService syncMetadataService;
 
     public DevSyncCoordinator(
             SyncProperties syncProperties,
             GitRepoProperties gitRepoProperties,
-            FtpProperties ftpProperties
+            FtpProperties ftpProperties,
+            WorkDirectoryService workDirectoryService,
+            GitClientService gitClientService,
+            PackageService packageService,
+            FtpClientService ftpClientService,
+            SyncTaskService syncTaskService,
+            CheckpointService checkpointService,
+            AckFileService ackFileService,
+            AckService ackService,
+            SyncMetadataService syncMetadataService
     ) {
         this.syncProperties = syncProperties;
         this.gitRepoProperties = gitRepoProperties;
         this.ftpProperties = ftpProperties;
+        this.workDirectoryService = workDirectoryService;
+        this.gitClientService = gitClientService;
+        this.packageService = packageService;
+        this.ftpClientService = ftpClientService;
+        this.syncTaskService = syncTaskService;
+        this.checkpointService = checkpointService;
+        this.ackFileService = ackFileService;
+        this.ackService = ackService;
+        this.syncMetadataService = syncMetadataService;
     }
 
     public void scanGitAndStagePackage() {
+        try {
             log.info(
                     "DEV scan tick. nodeId={}, branch={}, localRepo={}, ftpBaseDir={}",
                     syncProperties.getNodeId(),
@@ -36,20 +85,192 @@ public class DevSyncCoordinator {
                     gitRepoProperties.getLocalPath(),
                     ftpProperties.getBaseDir()
             );
-        log.info("TODO implement: Git pull -> package build -> upload to FTP dev-to-prod/out");
+            String branch = gitRepoProperties.getScanBranch();
+            String sourceVersion = gitClientService.prepareRepositoryAndGetHead(branch);
+            Path exportDirectory = workDirectoryService.getDevToProdStagingDir().resolve("git-" + sourceVersion);
+            gitClientService.exportBranchSnapshot(branch, exportDirectory);
+            String contentHash = packageService.calculateDirectoryHash(exportDirectory);
+
+            Optional<SyncTask> existing = syncTaskService.findByBusinessKey(
+                    SyncDirection.DEV_TO_PROD,
+                    sourceVersion,
+                    contentHash
+            );
+            if (shouldSkipStage(existing)) {
+                log.info("DEV package already staged or finished. version={}, hash={}", sourceVersion, contentHash);
+                return;
+            }
+
+            String traceId = existing.map(SyncTask::getTraceId).orElse(syncMetadataService.newTraceId());
+            PackageManifest manifest = syncMetadataService.createManifest(
+                    traceId,
+                    SyncDirection.DEV_TO_PROD,
+                    "DEV",
+                    sourceVersion,
+                    contentHash
+            );
+            if (existing.isPresent() && existing.get().getPackageName() != null) {
+                manifest.setPackageName(existing.get().getPackageName());
+            }
+
+            PackageBuildResult packageBuildResult = packageService.buildPackageFromDirectory(exportDirectory, manifest);
+            SyncTask task = syncTaskService.createOrLoadTask(
+                    SyncDirection.DEV_TO_PROD,
+                    sourceVersion,
+                    packageBuildResult.getContentHash(),
+                    packageBuildResult.getPackageName(),
+                    traceId
+            );
+            ftpClientService.uploadAtomic(
+                    packageBuildResult.getZipFile(),
+                    syncProperties.getRemoteDevToProdOutDir(),
+                    task.getPackageName()
+            );
+            syncTaskService.markStatus(task.getTraceId(), SyncStatus.UPLOADED, null);
+            log.info("DEV package uploaded. traceId={}, packageName={}", task.getTraceId(), task.getPackageName());
+        } catch (Exception e) {
+            log.error("DEV scan and stage failed", e);
+        }
     }
 
     public void consumeProdPackages() {
+        try {
             log.info(
                     "DEV consume tick. snapshotBranch={}, stagingDir={}",
                     gitRepoProperties.getSnapshotBranch(),
                     syncProperties.getProdToDevStagingDir()
             );
-        log.info("TODO implement: download prod-to-dev package -> write Git -> commit/push");
+            List<RemoteFileInfo> remoteFiles = ftpClientService.listFiles(syncProperties.getRemoteProdToDevOutDir(), ".zip");
+            for (RemoteFileInfo remoteFile : remoteFiles) {
+                consumeSingleProdPackage(remoteFile);
+            }
+        } catch (Exception e) {
+            log.error("DEV consume prod packages failed", e);
+        }
     }
 
     public void scanProdAcks() {
+        try {
             log.info("DEV ack scan tick. batchSize={}", syncProperties.getAckScanBatchSize());
-        log.info("TODO implement: read dev-to-prod/ack and update sync_task state");
+            List<RemoteFileInfo> ackFiles = ftpClientService.listFiles(syncProperties.getRemoteDevToProdAckDir(), ".json");
+            for (RemoteFileInfo ackFile : ackFiles) {
+                Path localAck = ftpClientService.download(ackFile.getPath(), workDirectoryService.getPackageTempDir());
+                SyncAckFile syncAckFile = ackFileService.readAckFile(localAck);
+                ackService.recordAck(
+                        syncAckFile.getTraceId(),
+                        syncAckFile.getAckSide(),
+                        syncAckFile.getAckStatus(),
+                        syncAckFile.getMessage()
+                );
+                syncTaskService.findByTraceId(syncAckFile.getTraceId()).ifPresent(task -> {
+                    SyncStatus status = "SUCCESS".equalsIgnoreCase(syncAckFile.getAckStatus())
+                            ? SyncStatus.SUCCESS : SyncStatus.FAILED;
+                    syncTaskService.markStatus(task.getTraceId(), status, syncAckFile.getMessage());
+                    if (status == SyncStatus.SUCCESS) {
+                        checkpointService.saveCheckpoint(task.getDirection(), task.getSourceVersion(), task.getContentHash());
+                    }
+                });
+                ftpClientService.deleteFile(ackFile.getPath());
+            }
+        } catch (Exception e) {
+            log.error("DEV ack scan failed", e);
+        }
+    }
+
+    private void consumeSingleProdPackage(RemoteFileInfo remoteFile) {
+        PackageManifest manifest = null;
+        try {
+            Path localZip = ftpClientService.download(remoteFile.getPath(), workDirectoryService.getProdToDevStagingDir());
+            PackageReadResult readResult = packageService.extractPackage(localZip);
+            manifest = readResult.getManifest();
+            if (manifest.getDirection() != SyncDirection.PROD_TO_DEV) {
+                log.warn("Ignored remote file with unexpected direction. file={}, direction={}", remoteFile.getName(), manifest.getDirection());
+                return;
+            }
+
+            SyncTask task = syncTaskService.createOrLoadTask(
+                    manifest.getDirection(),
+                    manifest.getSourceVersion(),
+                    manifest.getContentHash(),
+                    manifest.getPackageName(),
+                    manifest.getTraceId()
+            );
+            if (task.getStatus() == SyncStatus.SUCCESS) {
+                ftpClientService.deleteFile(remoteFile.getPath());
+                return;
+            }
+
+            String commitMessage = gitRepoProperties.getCommitMessagePrefix()
+                    + ": traceId=" + manifest.getTraceId()
+                    + " version=" + manifest.getSourceVersion();
+            boolean pushed = gitClientService.syncDirectoryToBranch(
+                    readResult.getConfigDirectory(),
+                    gitRepoProperties.getSnapshotBranch(),
+                    commitMessage
+            );
+
+            syncTaskService.markStatus(task.getTraceId(), SyncStatus.SUCCESS, null);
+            checkpointService.saveCheckpoint(manifest.getDirection(), manifest.getSourceVersion(), manifest.getContentHash());
+
+            SyncAckFile ack = syncMetadataService.createAck(
+                    manifest.getTraceId(),
+                    manifest.getDirection(),
+                    manifest.getSourceVersion(),
+                    "DEV",
+                    "SUCCESS",
+                    pushed ? "Snapshot committed to Git" : "No Git changes detected"
+            );
+            Path ackPath = ackFileService.writeAckFile(ack, manifest.getTraceId());
+            ftpClientService.uploadAtomic(
+                    ackPath,
+                    syncProperties.getRemoteProdToDevAckDir(),
+                    syncMetadataService.buildAckFileName(manifest.getTraceId())
+            );
+            ackService.recordAck(manifest.getTraceId(), "DEV", "SUCCESS", ack.getMessage());
+            ftpClientService.deleteFile(remoteFile.getPath());
+            log.info("DEV consumed PROD package. traceId={}, packageName={}", manifest.getTraceId(), manifest.getPackageName());
+        } catch (Exception e) {
+            log.error("DEV failed to consume PROD package: {}", remoteFile.getName(), e);
+            if (manifest != null) {
+                syncTaskService.increaseRetryCount(manifest.getTraceId(), summarizeException(e));
+                syncTaskService.markStatus(manifest.getTraceId(), SyncStatus.FAILED, summarizeException(e));
+                uploadFailureAck(manifest, summarizeException(e));
+            }
+        }
+    }
+
+    private boolean shouldSkipStage(Optional<SyncTask> existing) {
+        return existing.isPresent()
+                && (existing.get().getStatus() == SyncStatus.UPLOADED || existing.get().getStatus() == SyncStatus.SUCCESS);
+    }
+
+    private void uploadFailureAck(PackageManifest manifest, String message) {
+        try {
+            SyncAckFile ack = syncMetadataService.createAck(
+                    manifest.getTraceId(),
+                    manifest.getDirection(),
+                    manifest.getSourceVersion(),
+                    "DEV",
+                    "FAILED",
+                    message
+            );
+            Path ackPath = ackFileService.writeAckFile(ack, manifest.getTraceId());
+            ftpClientService.uploadAtomic(
+                    ackPath,
+                    syncProperties.getRemoteProdToDevAckDir(),
+                    syncMetadataService.buildAckFileName(manifest.getTraceId())
+            );
+            ackService.recordAck(manifest.getTraceId(), "DEV", "FAILED", message);
+        } catch (Exception ex) {
+            log.error("DEV failed to upload failure ack. traceId={}", manifest.getTraceId(), ex);
+        }
+    }
+
+    private String summarizeException(Exception e) {
+        String message = e.getMessage();
+        if (message == null || message.trim().isEmpty()) {
+            return e.getClass().getSimpleName();
+        }
+        return message.length() > 400 ? message.substring(0, 400) : message;
     }
 }

src/main/java/com/ftptool/sync/orchestrator/ProdSyncCoordinator.java

@@ -3,11 +3,33 @@ package com.ftptool.sync.orchestrator;
 import com.ftptool.sync.config.FtpProperties;
 import com.ftptool.sync.config.ProdApiProperties;
 import com.ftptool.sync.config.SyncProperties;
+import com.ftptool.sync.entity.SyncTask;
+import com.ftptool.sync.model.PackageBuildResult;
+import com.ftptool.sync.model.PackageManifest;
+import com.ftptool.sync.model.PackageReadResult;
+import com.ftptool.sync.model.ProdPullResult;
+import com.ftptool.sync.model.RemoteFileInfo;
+import com.ftptool.sync.model.SyncAckFile;
+import com.ftptool.sync.model.SyncDirection;
+import com.ftptool.sync.model.SyncStatus;
+import com.ftptool.sync.service.AckFileService;
+import com.ftptool.sync.service.AckService;
+import com.ftptool.sync.service.CheckpointService;
+import com.ftptool.sync.service.FtpClientService;
+import com.ftptool.sync.service.PackageService;
+import com.ftptool.sync.service.ProdConfigApiService;
+import com.ftptool.sync.service.SyncMetadataService;
+import com.ftptool.sync.service.SyncTaskService;
+import com.ftptool.sync.service.WorkDirectoryService;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.context.annotation.Profile;
 import org.springframework.stereotype.Service;
 
+import java.nio.file.Path;
+import java.util.List;
+import java.util.Optional;
+
 @Service
 @Profile("prod-agent")
 public class ProdSyncCoordinator {
@@ -17,39 +39,247 @@ public class ProdSyncCoordinator {
     private final SyncProperties syncProperties;
     private final FtpProperties ftpProperties;
     private final ProdApiProperties prodApiProperties;
+    private final WorkDirectoryService workDirectoryService;
+    private final FtpClientService ftpClientService;
+    private final PackageService packageService;
+    private final ProdConfigApiService prodConfigApiService;
+    private final SyncTaskService syncTaskService;
+    private final CheckpointService checkpointService;
+    private final AckFileService ackFileService;
+    private final AckService ackService;
+    private final SyncMetadataService syncMetadataService;
 
     public ProdSyncCoordinator(
             SyncProperties syncProperties,
             FtpProperties ftpProperties,
-            ProdApiProperties prodApiProperties
+            ProdApiProperties prodApiProperties,
+            WorkDirectoryService workDirectoryService,
+            FtpClientService ftpClientService,
+            PackageService packageService,
+            ProdConfigApiService prodConfigApiService,
+            SyncTaskService syncTaskService,
+            CheckpointService checkpointService,
+            AckFileService ackFileService,
+            AckService ackService,
+            SyncMetadataService syncMetadataService
     ) {
         this.syncProperties = syncProperties;
         this.ftpProperties = ftpProperties;
         this.prodApiProperties = prodApiProperties;
+        this.workDirectoryService = workDirectoryService;
+        this.ftpClientService = ftpClientService;
+        this.packageService = packageService;
+        this.prodConfigApiService = prodConfigApiService;
+        this.syncTaskService = syncTaskService;
+        this.checkpointService = checkpointService;
+        this.ackFileService = ackFileService;
+        this.ackService = ackService;
+        this.syncMetadataService = syncMetadataService;
     }
 
     public void consumeDevPackages() {
+        try {
             log.info(
                     "PROD consume tick. nodeId={}, ftpBaseDir={}, pushPath={}",
                     syncProperties.getNodeId(),
                     ftpProperties.getBaseDir(),
                     prodApiProperties.getPushPath()
             );
-        log.info("TODO implement: download dev-to-prod package -> validate -> call prod push API");
+            List<RemoteFileInfo> remoteFiles = ftpClientService.listFiles(syncProperties.getRemoteDevToProdOutDir(), ".zip");
+            for (RemoteFileInfo remoteFile : remoteFiles) {
+                consumeSingleDevPackage(remoteFile);
+            }
+        } catch (Exception e) {
+            log.error("PROD consume DEV packages failed", e);
+        }
     }
 
     public void pullProdConfigAndStagePackage() {
+        try {
             log.info(
                     "PROD pull tick. apiBaseUrl={}, pullPath={}, stagingDir={}",
                     prodApiProperties.getBaseUrl(),
                     prodApiProperties.getPullPath(),
                     syncProperties.getProdToDevStagingDir()
             );
-        log.info("TODO implement: call prod pull API -> build package -> upload to FTP prod-to-dev/out");
+            ProdPullResult pullResult = prodConfigApiService.pullConfigSnapshot();
+            Optional<SyncTask> existing = syncTaskService.findByBusinessKey(
+                    SyncDirection.PROD_TO_DEV,
+                    pullResult.getSourceVersion(),
+                    pullResult.getContentHash()
+            );
+            if (shouldSkipStage(existing)) {
+                log.info("PROD pull result already staged or finished. version={}, hash={}",
+                        pullResult.getSourceVersion(), pullResult.getContentHash());
+                return;
+            }
+
+            String traceId = existing.map(SyncTask::getTraceId).orElse(syncMetadataService.newTraceId());
+            PackageManifest manifest = syncMetadataService.createManifest(
+                    traceId,
+                    SyncDirection.PROD_TO_DEV,
+                    "PROD",
+                    pullResult.getSourceVersion(),
+                    pullResult.getContentHash()
+            );
+            if (existing.isPresent() && existing.get().getPackageName() != null) {
+                manifest.setPackageName(existing.get().getPackageName());
+            }
+
+            PackageBuildResult packageBuildResult = packageService.buildPackageFromDirectory(
+                    pullResult.getContentDirectory(),
+                    manifest
+            );
+            SyncTask task = syncTaskService.createOrLoadTask(
+                    SyncDirection.PROD_TO_DEV,
+                    pullResult.getSourceVersion(),
+                    packageBuildResult.getContentHash(),
+                    packageBuildResult.getPackageName(),
+                    traceId
+            );
+            ftpClientService.uploadAtomic(
+                    packageBuildResult.getZipFile(),
+                    syncProperties.getRemoteProdToDevOutDir(),
+                    task.getPackageName()
+            );
+            syncTaskService.markStatus(task.getTraceId(), SyncStatus.UPLOADED, null);
+            log.info("PROD package uploaded. traceId={}, packageName={}", task.getTraceId(), task.getPackageName());
+        } catch (Exception e) {
+            log.error("PROD pull and stage failed", e);
+        }
     }
 
     public void scanDevAcks() {
+        try {
             log.info("PROD ack scan tick. batchSize={}", syncProperties.getAckScanBatchSize());
-        log.info("TODO implement: read prod-to-dev/ack and update sync_task state");
+            List<RemoteFileInfo> ackFiles = ftpClientService.listFiles(syncProperties.getRemoteProdToDevAckDir(), ".json");
+            for (RemoteFileInfo ackFile : ackFiles) {
+                Path localAck = ftpClientService.download(ackFile.getPath(), workDirectoryService.getPackageTempDir());
+                SyncAckFile syncAckFile = ackFileService.readAckFile(localAck);
+                ackService.recordAck(
+                        syncAckFile.getTraceId(),
+                        syncAckFile.getAckSide(),
+                        syncAckFile.getAckStatus(),
+                        syncAckFile.getMessage()
+                );
+                syncTaskService.findByTraceId(syncAckFile.getTraceId()).ifPresent(task -> {
+                    SyncStatus status = "SUCCESS".equalsIgnoreCase(syncAckFile.getAckStatus())
+                            ? SyncStatus.SUCCESS : SyncStatus.FAILED;
+                    syncTaskService.markStatus(task.getTraceId(), status, syncAckFile.getMessage());
+                    if (status == SyncStatus.SUCCESS) {
+                        checkpointService.saveCheckpoint(task.getDirection(), task.getSourceVersion(), task.getContentHash());
+                    }
+                });
+                ftpClientService.deleteFile(ackFile.getPath());
+            }
+        } catch (Exception e) {
+            log.error("PROD ack scan failed", e);
+        }
+    }
+
+    private void consumeSingleDevPackage(RemoteFileInfo remoteFile) {
+        PackageManifest manifest = null;
+        try {
+            Path localZip = ftpClientService.download(remoteFile.getPath(), workDirectoryService.getDevToProdStagingDir());
+            PackageReadResult readResult = packageService.extractPackage(localZip);
+            manifest = readResult.getManifest();
+            if (manifest.getDirection() != SyncDirection.DEV_TO_PROD) {
+                log.warn("Ignored remote file with unexpected direction. file={}, direction={}", remoteFile.getName(), manifest.getDirection());
+                return;
+            }
+
+            SyncTask task = syncTaskService.createOrLoadTask(
+                    manifest.getDirection(),
+                    manifest.getSourceVersion(),
+                    manifest.getContentHash(),
+                    manifest.getPackageName(),
+                    manifest.getTraceId()
+            );
+            if (task.getStatus() == SyncStatus.SUCCESS) {
+                ftpClientService.deleteFile(remoteFile.getPath());
+                return;
+            }
+
+            prodConfigApiService.pushPackage(manifest, localZip);
+            syncTaskService.markStatus(task.getTraceId(), SyncStatus.SUCCESS, null);
+            checkpointService.saveCheckpoint(manifest.getDirection(), manifest.getSourceVersion(), manifest.getContentHash());
+
+            SyncAckFile ack = syncMetadataService.createAck(
+                    manifest.getTraceId(),
+                    manifest.getDirection(),
+                    manifest.getSourceVersion(),
+                    "PROD",
+                    "SUCCESS",
+                    "Package pushed to production API"
+            );
+            Path ackPath = ackFileService.writeAckFile(ack, manifest.getTraceId());
+            ftpClientService.uploadAtomic(
+                    ackPath,
+                    syncProperties.getRemoteDevToProdAckDir(),
+                    syncMetadataService.buildAckFileName(manifest.getTraceId())
+            );
+            ackService.recordAck(manifest.getTraceId(), "PROD", "SUCCESS", ack.getMessage());
+            ftpClientService.deleteFile(remoteFile.getPath());
+            log.info("PROD consumed DEV package. traceId={}, packageName={}", manifest.getTraceId(), manifest.getPackageName());
+        } catch (Exception e) {
+            log.error("PROD failed to consume DEV package: {}", remoteFile.getName(), e);
+            if (manifest != null) {
+                syncTaskService.increaseRetryCount(manifest.getTraceId(), summarizeException(e));
+                Optional<SyncTask> task = syncTaskService.findByTraceId(manifest.getTraceId());
+                int retryCount = task.map(SyncTask::getRetryCount).orElse(0);
+                if (retryCount >= syncProperties.getMaxRetryCount()) {
+                    syncTaskService.markStatus(manifest.getTraceId(), SyncStatus.FAILED, summarizeException(e));
+                    uploadFailureAck(manifest, summarizeException(e));
+                    moveToFailed(remoteFile, manifest);
+                }
+            }
+        }
+    }
+
+    private boolean shouldSkipStage(Optional<SyncTask> existing) {
+        return existing.isPresent()
+                && (existing.get().getStatus() == SyncStatus.UPLOADED || existing.get().getStatus() == SyncStatus.SUCCESS);
+    }
+
+    private void uploadFailureAck(PackageManifest manifest, String message) {
+        try {
+            SyncAckFile ack = syncMetadataService.createAck(
+                    manifest.getTraceId(),
+                    manifest.getDirection(),
+                    manifest.getSourceVersion(),
+                    "PROD",
+                    "FAILED",
+                    message
+            );
+            Path ackPath = ackFileService.writeAckFile(ack, manifest.getTraceId());
+            ftpClientService.uploadAtomic(
+                    ackPath,
+                    syncProperties.getRemoteDevToProdAckDir(),
+                    syncMetadataService.buildAckFileName(manifest.getTraceId())
+            );
+            ackService.recordAck(manifest.getTraceId(), "PROD", "FAILED", message);
+        } catch (Exception ex) {
+            log.error("PROD failed to upload failure ack. traceId={}", manifest.getTraceId(), ex);
+        }
+    }
+
+    private void moveToFailed(RemoteFileInfo remoteFile, PackageManifest manifest) {
+        try {
+            ftpClientService.moveFile(
+                    remoteFile.getPath(),
+                    syncProperties.getRemoteFailedDir(),
+                    remoteFile.getName()
+            );
+        } catch (Exception e) {
+            log.error("PROD failed to move package to failed dir. traceId={}", manifest.getTraceId(), e);
+        }
+    }
+
+    private String summarizeException(Exception e) {
+        String message = e.getMessage();
+        if (message == null || message.trim().isEmpty()) {
+            return e.getClass().getSimpleName();
+        }
+        return message.length() > 400 ? message.substring(0, 400) : message;
     }
 }

src/main/java/com/ftptool/sync/service/AckFileService.java

@@ -0,0 +1,35 @@
+package com.ftptool.sync.service;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.ftptool.sync.model.SyncAckFile;
+import org.springframework.stereotype.Service;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.time.OffsetDateTime;
+
+@Service
+public class AckFileService {
+
+    private final ObjectMapper objectMapper;
+    private final WorkDirectoryService workDirectoryService;
+
+    public AckFileService(ObjectMapper objectMapper, WorkDirectoryService workDirectoryService) {
+        this.objectMapper = objectMapper;
+        this.workDirectoryService = workDirectoryService;
+    }
+
+    public Path writeAckFile(SyncAckFile ackFile, String fileNamePrefix) throws IOException {
+        Path path = Files.createTempFile(workDirectoryService.getPackageTempDir(), fileNamePrefix + "-", ".ack.json");
+        if (ackFile.getProcessedAt() == null) {
+            ackFile.setProcessedAt(OffsetDateTime.now().toString());
+        }
+        objectMapper.writerWithDefaultPrettyPrinter().writeValue(path.toFile(), ackFile);
+        return path;
+    }
+
+    public SyncAckFile readAckFile(Path path) throws IOException {
+        return objectMapper.readValue(path.toFile(), SyncAckFile.class);
+    }
+}

src/main/java/com/ftptool/sync/service/FtpClientService.java

@@ -0,0 +1,189 @@
+package com.ftptool.sync.service;
+
+import com.ftptool.sync.config.FtpProperties;
+import com.ftptool.sync.model.RemoteFileInfo;
+import org.apache.commons.net.ftp.FTP;
+import org.apache.commons.net.ftp.FTPClient;
+import org.apache.commons.net.ftp.FTPFile;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.retry.annotation.Backoff;
+import org.springframework.retry.annotation.Retryable;
+import org.springframework.stereotype.Service;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.ArrayList;
+import java.util.Comparator;
+import java.util.List;
+
+@Service
+public class FtpClientService {
+
+    private static final Logger log = LoggerFactory.getLogger(FtpClientService.class);
+
+    private final FtpProperties ftpProperties;
+
+    public FtpClientService(FtpProperties ftpProperties) {
+        this.ftpProperties = ftpProperties;
+    }
+
+    @Retryable(maxAttempts = 3, backoff = @Backoff(delay = 2000, multiplier = 2.0))
+    public List<RemoteFileInfo> listFiles(String remoteDirectory, String suffix) throws IOException {
+        return withClient(client -> {
+            String normalizedPath = normalizeRemotePath(remoteDirectory);
+            FTPFile[] files = client.listFiles(normalizedPath);
+            List<RemoteFileInfo> result = new ArrayList<RemoteFileInfo>();
+            for (FTPFile file : files) {
+                if (!file.isFile()) {
+                    continue;
+                }
+                if (suffix != null && !file.getName().endsWith(suffix)) {
+                    continue;
+                }
+                result.add(new RemoteFileInfo(file.getName(), appendPath(remoteDirectory, file.getName())));
+            }
+            result.sort(Comparator.comparing(RemoteFileInfo::getName));
+            return result;
+        });
+    }
+
+    @Retryable(maxAttempts = 3, backoff = @Backoff(delay = 2000, multiplier = 2.0))
+    public Path download(String remotePath, Path localDirectory) throws IOException {
+        return withClient(client -> {
+            Files.createDirectories(localDirectory);
+            String fileName = remotePath.substring(remotePath.lastIndexOf('/') + 1);
+            Path localFile = localDirectory.resolve(fileName);
+            try (OutputStream outputStream = Files.newOutputStream(localFile)) {
+                if (!client.retrieveFile(normalizeRemotePath(remotePath), outputStream)) {
+                    throw new IOException("Failed to download remote file: " + remotePath);
+                }
+            }
+            return localFile;
+        });
+    }
+
+    @Retryable(maxAttempts = 3, backoff = @Backoff(delay = 2000, multiplier = 2.0))
+    public void uploadAtomic(Path localFile, String remoteDirectory, String remoteFileName) throws IOException {
+        withClient(client -> {
+            ensureDirectoryExists(client, remoteDirectory);
+            String tempName = remoteFileName + ".tmp";
+            String tempPath = appendPath(remoteDirectory, tempName);
+            String finalPath = appendPath(remoteDirectory, remoteFileName);
+            try (InputStream inputStream = Files.newInputStream(localFile)) {
+                if (!client.storeFile(tempPath, inputStream)) {
+                    throw new IOException("Failed to upload remote file: " + tempPath);
+                }
+            }
+            if (!client.rename(tempPath, finalPath)) {
+                throw new IOException("Failed to rename remote file: " + tempPath + " -> " + finalPath);
+            }
+            return null;
+        });
+    }
+
+    @Retryable(maxAttempts = 3, backoff = @Backoff(delay = 2000, multiplier = 2.0))
+    public void deleteFile(String remotePath) throws IOException {
+        withClient(client -> {
+            String normalized = normalizeRemotePath(remotePath);
+            if (!client.deleteFile(normalized)) {
+                log.warn("Remote file was not deleted: {}", normalized);
+            }
+            return null;
+        });
+    }
+
+    @Retryable(maxAttempts = 3, backoff = @Backoff(delay = 2000, multiplier = 2.0))
+    public void moveFile(String remotePath, String targetDirectory, String targetFileName) throws IOException {
+        withClient(client -> {
+            ensureDirectoryExists(client, targetDirectory);
+            String source = normalizeRemotePath(remotePath);
+            String target = appendPath(targetDirectory, targetFileName);
+            if (!client.rename(source, target)) {
+                throw new IOException("Failed to move remote file: " + source + " -> " + target);
+            }
+            return null;
+        });
+    }
+
+    public String appendPath(String directory, String fileName) {
+        return normalizeRemotePath(normalizeSubPath(directory)) + "/" + fileName;
+    }
+
+    private <T> T withClient(FtpCallback<T> callback) throws IOException {
+        FTPClient client = new FTPClient();
+        try {
+            client.setConnectTimeout(ftpProperties.getConnectTimeoutMs());
+            client.setDataTimeout(ftpProperties.getDataTimeoutMs());
+            client.setBufferSize(ftpProperties.getBufferSize());
+            client.connect(ftpProperties.getHost(), ftpProperties.getPort());
+            if (!client.login(ftpProperties.getUsername(), ftpProperties.getPassword())) {
+                throw new IOException("FTP login failed for user " + ftpProperties.getUsername());
+            }
+            client.setFileType(FTP.BINARY_FILE_TYPE);
+            if (ftpProperties.isPassiveMode()) {
+                client.enterLocalPassiveMode();
+            }
+            return callback.doWithClient(client);
+        } finally {
+            disconnectQuietly(client);
+        }
+    }
+
+    private void ensureDirectoryExists(FTPClient client, String directory) throws IOException {
+        String[] segments = normalizeSubPath(directory).split("/");
+        StringBuilder current = new StringBuilder();
+        for (String segment : segments) {
+            if (segment == null || segment.trim().isEmpty()) {
+                continue;
+            }
+            current.append("/").append(segment);
+            client.makeDirectory(withBaseDir(current.toString()));
+        }
+    }
+
+    private String normalizeRemotePath(String path) {
+        return withBaseDir(path.startsWith("/") ? path : "/" + path);
+    }
+
+    private String withBaseDir(String path) {
+        String baseDir = ftpProperties.getBaseDir();
+        if (baseDir == null || baseDir.trim().isEmpty() || "/".equals(baseDir.trim())) {
+            return path;
+        }
+        String normalizedBase = baseDir.startsWith("/") ? baseDir : "/" + baseDir;
+        normalizedBase = normalizedBase.endsWith("/") ? normalizedBase.substring(0, normalizedBase.length() - 1) : normalizedBase;
+        return normalizedBase + path;
+    }
+
+    private String normalizeSubPath(String path) {
+        if (path == null || path.trim().isEmpty()) {
+            return "/";
+        }
+        String normalized = path.startsWith("/") ? path : "/" + path;
+        return normalized.endsWith("/") && normalized.length() > 1
+                ? normalized.substring(0, normalized.length() - 1)
+                : normalized;
+    }
+
+    private void disconnectQuietly(FTPClient client) {
+        if (client == null) {
+            return;
+        }
+        try {
+            if (client.isConnected()) {
+                client.logout();
+                client.disconnect();
+            }
+        } catch (IOException e) {
+            log.warn("Failed to disconnect FTP client cleanly", e);
+        }
+    }
+
+    private interface FtpCallback<T> {
+        T doWithClient(FTPClient client) throws IOException;
+    }
+}

src/main/java/com/ftptool/sync/service/GitClientService.java

@@ -0,0 +1,181 @@
+package com.ftptool.sync.service;
+
+import com.ftptool.sync.config.GitRepoProperties;
+import com.ftptool.sync.util.FileTreeUtils;
+import org.eclipse.jgit.api.Git;
+import org.eclipse.jgit.api.Status;
+import org.eclipse.jgit.api.errors.GitAPIException;
+import org.eclipse.jgit.lib.PersonIdent;
+import org.eclipse.jgit.lib.Ref;
+import org.eclipse.jgit.lib.Repository;
+import org.eclipse.jgit.storage.file.FileRepositoryBuilder;
+import org.eclipse.jgit.transport.CredentialsProvider;
+import org.eclipse.jgit.transport.RefSpec;
+import org.eclipse.jgit.transport.UsernamePasswordCredentialsProvider;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Service;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.StandardCopyOption;
+import java.util.stream.Stream;
+
+@Service
+public class GitClientService {
+
+    private static final Logger log = LoggerFactory.getLogger(GitClientService.class);
+
+    private final GitRepoProperties gitRepoProperties;
+    private final Object lock = new Object();
+
+    public GitClientService(GitRepoProperties gitRepoProperties) {
+        this.gitRepoProperties = gitRepoProperties;
+    }
+
+    public String prepareRepositoryAndGetHead(String branch) throws IOException, GitAPIException {
+        synchronized (lock) {
+            try (Git git = openOrCloneRepository()) {
+                checkoutBranch(git, branch);
+                pullIfRemoteBranchExists(git, branch);
+                return git.getRepository().resolve("HEAD").name();
+            }
+        }
+    }
+
+    public Path getRepositoryPath() {
+        return new File(gitRepoProperties.getLocalPath()).toPath().toAbsolutePath().normalize();
+    }
+
+    public Path exportBranchSnapshot(String branch, Path targetDirectory) throws IOException, GitAPIException {
+        synchronized (lock) {
+            try (Git git = openOrCloneRepository()) {
+                checkoutBranch(git, branch);
+                pullIfRemoteBranchExists(git, branch);
+                FileTreeUtils.deleteRecursively(targetDirectory);
+                FileTreeUtils.ensureDirectory(targetDirectory);
+                copyWorkingTreeWithoutGit(getRepositoryPath(), targetDirectory);
+            }
+            return targetDirectory;
+        }
+    }
+
+    public boolean syncDirectoryToBranch(Path sourceDirectory, String branch, String message) throws IOException, GitAPIException {
+        synchronized (lock) {
+            try (Git git = openOrCloneRepository()) {
+                checkoutBranch(git, branch);
+                Path repositoryPath = getRepositoryPath();
+                if (!Files.exists(repositoryPath.resolve(".git"))) {
+                    throw new IOException("Git repository does not exist: " + repositoryPath);
+                }
+                FileTreeUtils.deleteChildrenExcept(repositoryPath, ".git");
+                FileTreeUtils.copyDirectory(sourceDirectory, repositoryPath);
+                git.add().addFilepattern(".").call();
+                git.add().setUpdate(true).addFilepattern(".").call();
+                Status status = git.status().call();
+                if (status.isClean()) {
+                    log.info("No Git changes detected on branch {}", branch);
+                    return false;
+                }
+                PersonIdent personIdent = new PersonIdent(
+                        gitRepoProperties.getCommitAuthorName(),
+                        gitRepoProperties.getCommitAuthorEmail()
+                );
+                git.commit()
+                        .setMessage(message)
+                        .setAuthor(personIdent)
+                        .setCommitter(personIdent)
+                        .call();
+                git.push()
+                        .setCredentialsProvider(credentialsProvider())
+                        .setRemote("origin")
+                        .setRefSpecs(new RefSpec("refs/heads/" + branch + ":refs/heads/" + branch))
+                        .call();
+                return true;
+            }
+        }
+    }
+
+    private Git openOrCloneRepository() throws IOException, GitAPIException {
+        Path repositoryPath = getRepositoryPath();
+        if (Files.exists(repositoryPath.resolve(".git"))) {
+            return Git.open(repositoryPath.toFile());
+        }
+        FileTreeUtils.ensureDirectory(repositoryPath);
+        return Git.cloneRepository()
+                .setURI(gitRepoProperties.getRemoteUri())
+                .setDirectory(repositoryPath.toFile())
+                .setCredentialsProvider(credentialsProvider())
+                .call();
+    }
+
+    private void checkoutBranch(Git git, String branch) throws GitAPIException, IOException {
+        Repository repository = git.getRepository();
+        Ref localRef = repository.findRef(branch);
+        Ref remoteRef = repository.findRef("refs/remotes/origin/" + branch);
+        if (localRef == null) {
+            if (remoteRef != null) {
+                git.checkout()
+                        .setCreateBranch(true)
+                        .setName(branch)
+                        .setStartPoint("origin/" + branch)
+                        .setUpstreamMode(org.eclipse.jgit.api.CreateBranchCommand.SetupUpstreamMode.TRACK)
+                        .call();
+            } else {
+                git.checkout()
+                        .setCreateBranch(true)
+                        .setName(branch)
+                        .call();
+            }
+        } else {
+            git.checkout().setName(branch).call();
+        }
+    }
+
+    private void pullIfRemoteBranchExists(Git git, String branch) throws GitAPIException, IOException {
+        Repository repository = git.getRepository();
+        Ref remoteRef = repository.findRef("refs/remotes/origin/" + branch);
+        if (remoteRef == null) {
+            git.fetch()
+                    .setCredentialsProvider(credentialsProvider())
+                    .setRemote("origin")
+                    .call();
+            remoteRef = repository.findRef("refs/remotes/origin/" + branch);
+        }
+        if (remoteRef != null) {
+            git.pull()
+                    .setRemote("origin")
+                    .setRemoteBranchName(branch)
+                    .setRebase(gitRepoProperties.isPullRebase())
+                    .setCredentialsProvider(credentialsProvider())
+                    .call();
+        }
+    }
+
+    private CredentialsProvider credentialsProvider() {
+        return new UsernamePasswordCredentialsProvider(
+                gitRepoProperties.getUsername(),
+                gitRepoProperties.getPassword()
+        );
+    }
+
+    private void copyWorkingTreeWithoutGit(Path repositoryPath, Path targetDirectory) throws IOException {
+        try (Stream<Path> stream = Files.list(repositoryPath)) {
+            stream.filter(path -> !".git".equals(path.getFileName().toString()))
+                    .forEach(path -> {
+                        try {
+                            Path target = targetDirectory.resolve(path.getFileName().toString());
+                            if (Files.isDirectory(path)) {
+                                FileTreeUtils.copyDirectory(path, target);
+                            } else {
+                                Files.copy(path, target, StandardCopyOption.REPLACE_EXISTING);
+                            }
+                        } catch (IOException e) {
+                            throw new IllegalStateException("Failed to export repository snapshot", e);
+                        }
+                    });
+        }
+    }
+}

src/main/java/com/ftptool/sync/service/PackageService.java

@@ -0,0 +1,136 @@
+package com.ftptool.sync.service;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.ftptool.sync.model.PackageBuildResult;
+import com.ftptool.sync.model.PackageManifest;
+import com.ftptool.sync.model.PackageReadResult;
+import com.ftptool.sync.util.FileHashUtils;
+import com.ftptool.sync.util.FileTreeUtils;
+import org.springframework.stereotype.Service;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.StandardCopyOption;
+import java.time.OffsetDateTime;
+import java.util.stream.Stream;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipInputStream;
+import java.util.zip.ZipOutputStream;
+
+@Service
+public class PackageService {
+
+    private static final String CONFIG_DIR = "config";
+    private static final String MANIFEST_FILE = "manifest.json";
+    private static final String HASH_FILE = "sha256.txt";
+
+    private final ObjectMapper objectMapper;
+    private final WorkDirectoryService workDirectoryService;
+
+    public PackageService(ObjectMapper objectMapper, WorkDirectoryService workDirectoryService) {
+        this.objectMapper = objectMapper;
+        this.workDirectoryService = workDirectoryService;
+    }
+
+    public PackageBuildResult buildPackageFromDirectory(Path sourceDirectory, PackageManifest manifest) throws IOException {
+        String contentHash = calculateDirectoryHash(sourceDirectory);
+        manifest.setContentHash(contentHash);
+        if (manifest.getCreatedAt() == null) {
+            manifest.setCreatedAt(OffsetDateTime.now().toString());
+        }
+
+        Path zipFile = workDirectoryService.getPackageTempDir().resolve(manifest.getPackageName());
+        FileTreeUtils.ensureDirectory(zipFile.getParent());
+        try (OutputStream outputStream = Files.newOutputStream(zipFile);
+             ZipOutputStream zipOutputStream = new ZipOutputStream(outputStream, StandardCharsets.UTF_8)) {
+            addJsonEntry(zipOutputStream, MANIFEST_FILE, manifest);
+            addTextEntry(zipOutputStream, HASH_FILE, contentHash);
+            addDirectoryEntries(zipOutputStream, sourceDirectory, CONFIG_DIR);
+        }
+        return new PackageBuildResult(zipFile, manifest.getPackageName(), contentHash);
+    }
+
+    public String calculateDirectoryHash(Path sourceDirectory) throws IOException {
+        return FileHashUtils.sha256Directory(sourceDirectory);
+    }
+
+    public PackageReadResult extractPackage(Path zipFile) throws IOException {
+        Path extractDir = Files.createTempDirectory(workDirectoryService.getPackageTempDir(), "pkg-");
+        Path configDir = extractDir.resolve(CONFIG_DIR);
+        PackageManifest manifest = null;
+
+        try (InputStream inputStream = Files.newInputStream(zipFile);
+             ZipInputStream zipInputStream = new ZipInputStream(inputStream, StandardCharsets.UTF_8)) {
+            ZipEntry entry;
+            while ((entry = zipInputStream.getNextEntry()) != null) {
+                Path target = extractDir.resolve(entry.getName()).normalize();
+                if (!target.startsWith(extractDir)) {
+                    throw new IOException("Zip entry escapes target directory: " + entry.getName());
+                }
+                if (entry.isDirectory()) {
+                    Files.createDirectories(target);
+                    continue;
+                }
+                Files.createDirectories(target.getParent());
+                Files.copy(zipInputStream, target, StandardCopyOption.REPLACE_EXISTING);
+                if (MANIFEST_FILE.equals(entry.getName())) {
+                    manifest = objectMapper.readValue(target.toFile(), PackageManifest.class);
+                }
+            }
+        }
+
+        if (manifest == null) {
+            throw new IOException("Package manifest.json is missing");
+        }
+        if (Files.notExists(configDir) || !Files.isDirectory(configDir)) {
+            throw new IOException("Package config directory is missing");
+        }
+        String actualHash = calculateDirectoryHash(configDir);
+        if (manifest.getContentHash() != null
+                && !manifest.getContentHash().trim().isEmpty()
+                && !manifest.getContentHash().equals(actualHash)) {
+            throw new IOException("Package content hash mismatch");
+        }
+        return new PackageReadResult(manifest, configDir);
+    }
+
+    private void addDirectoryEntries(ZipOutputStream zipOutputStream, Path sourceDirectory, String rootName) throws IOException {
+        Path gitDirectory = sourceDirectory.resolve(".git");
+        try (Stream<Path> stream = Files.walk(sourceDirectory)) {
+            stream.filter(path -> !path.equals(sourceDirectory))
+                    .filter(path -> !path.startsWith(gitDirectory))
+                    .forEach(path -> {
+                        Path relative = sourceDirectory.relativize(path);
+                        String entryName = rootName + "/" + relative.toString().replace('\\', '/');
+                        try {
+                            if (Files.isDirectory(path)) {
+                                zipOutputStream.putNextEntry(new ZipEntry(entryName + "/"));
+                                zipOutputStream.closeEntry();
+                            } else {
+                                zipOutputStream.putNextEntry(new ZipEntry(entryName));
+                                Files.copy(path, zipOutputStream);
+                                zipOutputStream.closeEntry();
+                            }
+                        } catch (IOException e) {
+                            throw new IllegalStateException("Failed to package path: " + path, e);
+                        }
+                    });
+        }
+    }
+
+    private void addJsonEntry(ZipOutputStream zipOutputStream, String fileName, Object object) throws IOException {
+        zipOutputStream.putNextEntry(new ZipEntry(fileName));
+        zipOutputStream.write(objectMapper.writerWithDefaultPrettyPrinter().writeValueAsBytes(object));
+        zipOutputStream.closeEntry();
+    }
+
+    private void addTextEntry(ZipOutputStream zipOutputStream, String fileName, String value) throws IOException {
+        zipOutputStream.putNextEntry(new ZipEntry(fileName));
+        zipOutputStream.write(value.getBytes(StandardCharsets.UTF_8));
+        zipOutputStream.closeEntry();
+    }
+}

src/main/java/com/ftptool/sync/service/ProdConfigApiService.java

@@ -0,0 +1,126 @@
+package com.ftptool.sync.service;
+
+import com.ftptool.sync.config.ProdApiProperties;
+import com.ftptool.sync.config.SyncProperties;
+import com.ftptool.sync.model.PackageManifest;
+import com.ftptool.sync.model.ProdPullResult;
+import com.ftptool.sync.util.FileHashUtils;
+import com.ftptool.sync.util.FileTreeUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.core.io.FileSystemResource;
+import org.springframework.http.HttpEntity;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpMethod;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.stereotype.Service;
+import org.springframework.util.LinkedMultiValueMap;
+import org.springframework.util.MultiValueMap;
+import org.springframework.web.client.RestTemplate;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+
+@Service
+public class ProdConfigApiService {
+
+    private static final Logger log = LoggerFactory.getLogger(ProdConfigApiService.class);
+
+    private final ProdApiProperties prodApiProperties;
+    private final SyncProperties syncProperties;
+    private final RestTemplate restTemplate;
+    private final WorkDirectoryService workDirectoryService;
+
+    public ProdConfigApiService(
+            ProdApiProperties prodApiProperties,
+            SyncProperties syncProperties,
+            RestTemplate restTemplate,
+            WorkDirectoryService workDirectoryService
+    ) {
+        this.prodApiProperties = prodApiProperties;
+        this.syncProperties = syncProperties;
+        this.restTemplate = restTemplate;
+        this.workDirectoryService = workDirectoryService;
+    }
+
+    public void pushPackage(PackageManifest manifest, Path zipFile) {
+        String url = buildUrl(prodApiProperties.getPushPath());
+        HttpHeaders headers = defaultHeaders();
+        headers.setContentType(MediaType.MULTIPART_FORM_DATA);
+
+        MultiValueMap<String, Object> body = new LinkedMultiValueMap<String, Object>();
+        body.add("file", new FileSystemResource(zipFile.toFile()));
+        body.add("traceId", manifest.getTraceId());
+        body.add("direction", manifest.getDirection().name());
+        body.add("sourceVersion", manifest.getSourceVersion());
+        body.add("contentHash", manifest.getContentHash());
+
+        ResponseEntity<String> response = restTemplate.postForEntity(url, new HttpEntity<MultiValueMap<String, Object>>(body, headers), String.class);
+        if (!response.getStatusCode().is2xxSuccessful()) {
+            throw new IllegalStateException("Prod push API failed with status " + response.getStatusCodeValue());
+        }
+        log.info("Prod push API finished. traceId={}, status={}", manifest.getTraceId(), response.getStatusCodeValue());
+    }
+
+    public ProdPullResult pullConfigSnapshot() throws IOException {
+        String url = buildUrl(prodApiProperties.getPullPath());
+        HttpHeaders headers = defaultHeaders();
+        ResponseEntity<byte[]> response = restTemplate.exchange(
+                url,
+                HttpMethod.GET,
+                new HttpEntity<Void>(headers),
+                byte[].class
+        );
+        if (!response.getStatusCode().is2xxSuccessful()) {
+            throw new IllegalStateException("Prod pull API failed with status " + response.getStatusCodeValue());
+        }
+        byte[] body = response.getBody();
+        if (body == null || body.length == 0) {
+            throw new IllegalStateException("Prod pull API returned empty content");
+        }
+
+        Path tempDir = Files.createTempDirectory(workDirectoryService.getProdToDevStagingDir(), "pull-");
+        FileTreeUtils.ensureDirectory(tempDir);
+        Path targetFile = tempDir.resolve(syncProperties.getPullResponseFileName());
+        Files.write(targetFile, body);
+
+        String contentHash = FileHashUtils.sha256(body);
+        String sourceVersion = firstNonBlank(
+                response.getHeaders().getFirst("X-Config-Version"),
+                response.getHeaders().getETag(),
+                contentHash
+        );
+        return new ProdPullResult(tempDir, sourceVersion, contentHash);
+    }
+
+    private HttpHeaders defaultHeaders() {
+        HttpHeaders headers = new HttpHeaders();
+        headers.setAccept(java.util.Collections.singletonList(MediaType.APPLICATION_JSON));
+        if (prodApiProperties.getToken() != null && !prodApiProperties.getToken().trim().isEmpty()) {
+            headers.setBearerAuth(prodApiProperties.getToken().trim());
+        }
+        return headers;
+    }
+
+    private String buildUrl(String path) {
+        String base = prodApiProperties.getBaseUrl();
+        if (base.endsWith("/") && path.startsWith("/")) {
+            return base.substring(0, base.length() - 1) + path;
+        }
+        if (!base.endsWith("/") && !path.startsWith("/")) {
+            return base + "/" + path;
+        }
+        return base + path;
+    }
+
+    private String firstNonBlank(String... candidates) {
+        for (String candidate : candidates) {
+            if (candidate != null && !candidate.trim().isEmpty()) {
+                return candidate;
+            }
+        }
+        return null;
+    }
+}

src/main/java/com/ftptool/sync/service/SyncMetadataService.java

@@ -0,0 +1,69 @@
+package com.ftptool.sync.service;
+
+import com.ftptool.sync.model.PackageManifest;
+import com.ftptool.sync.model.SyncAckFile;
+import com.ftptool.sync.model.SyncDirection;
+import org.springframework.stereotype.Service;
+
+import java.time.OffsetDateTime;
+import java.util.UUID;
+
+@Service
+public class SyncMetadataService {
+
+    public String newTraceId() {
+        return UUID.randomUUID().toString().replace("-", "");
+    }
+
+    public PackageManifest createManifest(
+            String traceId,
+            SyncDirection direction,
+            String sourceEnv,
+            String sourceVersion,
+            String contentHash
+    ) {
+        PackageManifest manifest = new PackageManifest();
+        manifest.setTraceId(traceId);
+        manifest.setDirection(direction);
+        manifest.setSourceEnv(sourceEnv);
+        manifest.setSourceVersion(sourceVersion);
+        manifest.setContentHash(contentHash);
+        manifest.setCreatedAt(OffsetDateTime.now().toString());
+        manifest.setPackageName(buildPackageFileName(direction, sourceVersion, traceId));
+        return manifest;
+    }
+
+    public SyncAckFile createAck(
+            String traceId,
+            SyncDirection direction,
+            String sourceVersion,
+            String ackSide,
+            String ackStatus,
+            String message
+    ) {
+        SyncAckFile ackFile = new SyncAckFile();
+        ackFile.setTraceId(traceId);
+        ackFile.setDirection(direction);
+        ackFile.setSourceVersion(sourceVersion);
+        ackFile.setAckSide(ackSide);
+        ackFile.setAckStatus(ackStatus);
+        ackFile.setMessage(message);
+        ackFile.setProcessedAt(OffsetDateTime.now().toString());
+        return ackFile;
+    }
+
+    public String buildPackageFileName(SyncDirection direction, String sourceVersion, String traceId) {
+        return direction.name().toLowerCase() + "-" + sanitize(sourceVersion) + "-" + sanitize(traceId) + ".zip";
+    }
+
+    public String buildAckFileName(String traceId) {
+        return "ack-" + sanitize(traceId) + ".json";
+    }
+
+    private String sanitize(String value) {
+        if (value == null || value.trim().isEmpty()) {
+            return "unknown";
+        }
+        return value.replaceAll("[^a-zA-Z0-9._-]", "_");
+    }
+}

src/main/java/com/ftptool/sync/service/SyncTaskService.java

@@ -21,6 +21,17 @@ public class SyncTaskService {
 
     @Transactional
     public SyncTask createOrLoadTask(SyncDirection direction, String sourceVersion, String contentHash, String packageName) {
+        return createOrLoadTask(direction, sourceVersion, contentHash, packageName, null);
+    }
+
+    @Transactional
+    public SyncTask createOrLoadTask(
+            SyncDirection direction,
+            String sourceVersion,
+            String contentHash,
+            String packageName,
+            String preferredTraceId
+    ) {
         Optional<SyncTask> existing = syncTaskRepository.findByDirectionAndSourceVersionAndContentHash(
                 direction, sourceVersion, contentHash
         );
@@ -29,7 +40,9 @@ public class SyncTaskService {
         }
 
         SyncTask task = new SyncTask();
-        task.setTraceId(UUID.randomUUID().toString().replace("-", ""));
+        task.setTraceId(preferredTraceId == null || preferredTraceId.trim().isEmpty()
+                ? UUID.randomUUID().toString().replace("-", "")
+                : preferredTraceId);
         task.setDirection(direction);
         task.setSourceVersion(sourceVersion);
         task.setContentHash(contentHash);
@@ -43,6 +56,11 @@ public class SyncTaskService {
         return syncTaskRepository.findByTraceId(traceId);
     }
 
+    @Transactional(readOnly = true)
+    public Optional<SyncTask> findByBusinessKey(SyncDirection direction, String sourceVersion, String contentHash) {
+        return syncTaskRepository.findByDirectionAndSourceVersionAndContentHash(direction, sourceVersion, contentHash);
+    }
+
     @Transactional
     public void markStatus(String traceId, SyncStatus status, String errorMsg) {
         syncTaskRepository.findByTraceId(traceId).ifPresent(task -> {

src/main/java/com/ftptool/sync/service/WorkDirectoryService.java

@@ -0,0 +1,44 @@
+package com.ftptool.sync.service;
+
+import com.ftptool.sync.config.SyncProperties;
+import com.ftptool.sync.util.FileTreeUtils;
+import org.springframework.stereotype.Service;
+
+import javax.annotation.PostConstruct;
+import java.io.IOException;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+@Service
+public class WorkDirectoryService {
+
+    private final SyncProperties syncProperties;
+
+    public WorkDirectoryService(SyncProperties syncProperties) {
+        this.syncProperties = syncProperties;
+    }
+
+    @PostConstruct
+    public void initialize() throws IOException {
+        FileTreeUtils.ensureDirectory(getWorkDir());
+        FileTreeUtils.ensureDirectory(getPackageTempDir());
+        FileTreeUtils.ensureDirectory(getDevToProdStagingDir());
+        FileTreeUtils.ensureDirectory(getProdToDevStagingDir());
+    }
+
+    public Path getWorkDir() {
+        return Paths.get(syncProperties.getWorkDir()).toAbsolutePath().normalize();
+    }
+
+    public Path getPackageTempDir() {
+        return Paths.get(syncProperties.getPackageTempDir()).toAbsolutePath().normalize();
+    }
+
+    public Path getDevToProdStagingDir() {
+        return Paths.get(syncProperties.getDevToProdStagingDir()).toAbsolutePath().normalize();
+    }
+
+    public Path getProdToDevStagingDir() {
+        return Paths.get(syncProperties.getProdToDevStagingDir()).toAbsolutePath().normalize();
+    }
+}

src/main/java/com/ftptool/sync/util/FileHashUtils.java

@@ -0,0 +1,77 @@
+package com.ftptool.sync.util;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.security.DigestInputStream;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+import java.util.ArrayList;
+import java.util.Comparator;
+import java.util.List;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+public final class FileHashUtils {
+
+    private FileHashUtils() {
+    }
+
+    public static String sha256(Path file) throws IOException {
+        MessageDigest digest = newDigest();
+        try (InputStream inputStream = Files.newInputStream(file);
+             DigestInputStream digestInputStream = new DigestInputStream(inputStream, digest)) {
+            byte[] buffer = new byte[8192];
+            while (digestInputStream.read(buffer) != -1) {
+                // Consume stream for digest calculation.
+            }
+        }
+        return toHex(digest.digest());
+    }
+
+    public static String sha256(byte[] bytes) {
+        MessageDigest digest = newDigest();
+        digest.update(bytes);
+        return toHex(digest.digest());
+    }
+
+    public static String sha256Directory(Path directory) throws IOException {
+        MessageDigest digest = newDigest();
+        List<Path> files = listRegularFiles(directory);
+        for (Path file : files) {
+            Path relative = directory.relativize(file);
+            digest.update(relative.toString().replace('\\', '/').getBytes(StandardCharsets.UTF_8));
+            digest.update((byte) '\n');
+            digest.update(Files.readAllBytes(file));
+            digest.update((byte) '\n');
+        }
+        return toHex(digest.digest());
+    }
+
+    private static List<Path> listRegularFiles(Path directory) throws IOException {
+        try (Stream<Path> stream = Files.walk(directory)) {
+            return stream
+                    .filter(Files::isRegularFile)
+                    .sorted(Comparator.comparing(path -> directory.relativize(path).toString().replace('\\', '/')))
+                    .collect(Collectors.toCollection(ArrayList::new));
+        }
+    }
+
+    private static MessageDigest newDigest() {
+        try {
+            return MessageDigest.getInstance("SHA-256");
+        } catch (NoSuchAlgorithmException e) {
+            throw new IllegalStateException("SHA-256 digest is unavailable", e);
+        }
+    }
+
+    private static String toHex(byte[] bytes) {
+        StringBuilder builder = new StringBuilder(bytes.length * 2);
+        for (byte aByte : bytes) {
+            builder.append(String.format("%02x", aByte));
+        }
+        return builder.toString();
+    }
+}

src/main/java/com/ftptool/sync/util/FileTreeUtils.java

@@ -0,0 +1,72 @@
+package com.ftptool.sync.util;
+
+import java.io.IOException;
+import java.nio.file.FileVisitResult;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.SimpleFileVisitor;
+import java.nio.file.StandardCopyOption;
+import java.nio.file.attribute.BasicFileAttributes;
+import java.util.Comparator;
+import java.util.stream.Stream;
+
+public final class FileTreeUtils {
+
+    private FileTreeUtils() {
+    }
+
+    public static void ensureDirectory(Path path) throws IOException {
+        if (path != null) {
+            Files.createDirectories(path);
+        }
+    }
+
+    public static void deleteChildrenExcept(Path directory, String reservedName) throws IOException {
+        try (Stream<Path> stream = Files.list(directory)) {
+            for (Path child : stream.sorted(Comparator.reverseOrder()).toArray(Path[]::new)) {
+                if (reservedName.equals(child.getFileName().toString())) {
+                    continue;
+                }
+                deleteRecursively(child);
+            }
+        }
+    }
+
+    public static void deleteRecursively(Path path) throws IOException {
+        if (path == null || Files.notExists(path)) {
+            return;
+        }
+        Files.walkFileTree(path, new SimpleFileVisitor<Path>() {
+            @Override
+            public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
+                Files.deleteIfExists(file);
+                return FileVisitResult.CONTINUE;
+            }
+
+            @Override
+            public FileVisitResult postVisitDirectory(Path dir, IOException exc) throws IOException {
+                Files.deleteIfExists(dir);
+                return FileVisitResult.CONTINUE;
+            }
+        });
+    }
+
+    public static void copyDirectory(Path source, Path target) throws IOException {
+        ensureDirectory(target);
+        Files.walkFileTree(source, new SimpleFileVisitor<Path>() {
+            @Override
+            public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) throws IOException {
+                Path relative = source.relativize(dir);
+                Files.createDirectories(target.resolve(relative));
+                return FileVisitResult.CONTINUE;
+            }
+
+            @Override
+            public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
+                Path relative = source.relativize(file);
+                Files.copy(file, target.resolve(relative), StandardCopyOption.REPLACE_EXISTING);
+                return FileVisitResult.CONTINUE;
+            }
+        });
+    }
+}

src/main/resources/application.properties

@@ -27,6 +27,12 @@ sync.dev-to-prod-staging-dir=./work/staging/dev-to-prod
 sync.prod-to-dev-staging-dir=./work/staging/prod-to-dev
 sync.max-retry-count=5
 sync.ack-scan-batch-size=50
+sync.remote-dev-to-prod-out-dir=/dev-to-prod/out
+sync.remote-dev-to-prod-ack-dir=/dev-to-prod/ack
+sync.remote-prod-to-dev-out-dir=/prod-to-dev/out
+sync.remote-prod-to-dev-ack-dir=/prod-to-dev/ack
+sync.remote-failed-dir=/failed
+sync.pull-response-file-name=prod-config.json
 
 # FTP defaults
 ftp.host=127.0.0.1