@Override
  public long setTargetVersion(PublishingTargetItem target, long newVersion, String site) {
    long resoponseVersion = -1;
    if (target.getVersionUrl() != null && !target.getVersionUrl().isEmpty()) {
      LOGGER.debug("Set deployment agent version for target {0}", target.getName());
      URL versionUrl = null;
      try {
        versionUrl = new URL(target.getVersionUrl());
      } catch (MalformedURLException e) {
        LOGGER.error("Invalid set version URL for target [%s]", target.getName());
        return resoponseVersion;
      }
      PostMethod postMethod = null;
      HttpClient client = null;
      try {
        postMethod = new PostMethod(target.getVersionUrl());
        postMethod.addParameter(TARGET_REQUEST_PARAMETER, target.getTarget());
        postMethod.addParameter(VERSION_REQUEST_PARAMETER, String.valueOf(newVersion));
        String siteId = target.getSiteId();
        if (StringUtils.isEmpty(siteId)) {
          siteId = site;
        }
        postMethod.addParameter(SITE_REQUEST_PARAMETER, site);
        client = new HttpClient();
        int status = client.executeMethod(postMethod);
        if (status == HttpStatus.SC_OK) {
          String responseText = postMethod.getResponseBodyAsString();
          if (responseText != null && !responseText.isEmpty()) {
            resoponseVersion = Long.parseLong(responseText);
          } else {
            resoponseVersion = 0;
          }
        }

      } catch (Exception e) {
        LOGGER.error(
            "Target {0} responded with error while setting target version. Set version failed for url {1}",
            target.getName(), target.getVersionUrl());

      } finally {
        if (client != null) {
          HttpConnectionManager mgr = client.getHttpConnectionManager();
          if (mgr instanceof SimpleHttpConnectionManager) {
            ((SimpleHttpConnectionManager) mgr).shutdown();
          }
        }
        if (postMethod != null) {
          postMethod.releaseConnection();
        }
        postMethod = null;
        client = null;
      }
    }
    return resoponseVersion;
  }
  @Override
  public long getTargetVersion(PublishingTargetItem target, String site) {
    long version = -1;
    if (target.getVersionUrl() != null && !target.getVersionUrl().isEmpty()) {
      LOGGER.debug(String.format("Get deployment agent version for target ", target.getName()));
      URL versionUrl = null;
      try {
        versionUrl = new URL(target.getVersionUrl());
      } catch (MalformedURLException e) {
        LOGGER.error(String.format("Invalid get version URL for target [%s]", target.getName()), e);
      }
      GetMethod getMethod = null;
      HttpClient client = null;
      try {
        getMethod = new GetMethod(target.getVersionUrl());
        String siteId = target.getSiteId();
        if (StringUtils.isEmpty(siteId)) {
          siteId = site;
        }
        getMethod.setQueryString(
            new NameValuePair[] {
              new NameValuePair(TARGET_REQUEST_PARAMETER, target.getTarget()),
              new NameValuePair(SITE_REQUEST_PARAMETER, siteId)
            });
        client = new HttpClient();
        int status = client.executeMethod(getMethod);
        if (status == HttpStatus.SC_OK) {
          String responseText = getMethod.getResponseBodyAsString();
          if (responseText != null && !responseText.isEmpty()) {
            version = Long.parseLong(responseText.trim());
          } else {
            version = 0;
          }
        }

      } catch (Exception e) {
        // LOGGER.error(String.format("Target (%s) responded with error while checking target
        // version. Get version failed for url %s", target.getName(), target.getVersionUrl()));

      } finally {
        if (client != null) {
          HttpConnectionManager mgr = client.getHttpConnectionManager();
          if (mgr instanceof SimpleHttpConnectionManager) {
            ((SimpleHttpConnectionManager) mgr).shutdown();
          }
        }
        if (getMethod != null) {
          getMethod.releaseConnection();
        }
        getMethod = null;
        client = null;
      }
    }
    return version;
  }
  @Override
  public boolean checkConnection(PublishingTargetItem target) {
    boolean connOk = false;
    if (target.getStatusUrl() != null && !target.getStatusUrl().isEmpty()) {
      LOGGER.debug(String.format("Check deployment agent status for target ", target.getName()));
      URL statusUrl = null;
      try {
        statusUrl = new URL(target.getStatusUrl());
      } catch (MalformedURLException e) {
        LOGGER.error(
            String.format(
                "Invalid endpoint status URL for publishing channel [%s]", target.getName()),
            e);
      }
      GetMethod getMethod = null;
      HttpClient client = null;
      try {
        getMethod = new GetMethod(target.getStatusUrl());
        client = new HttpClient();
        int status = client.executeMethod(getMethod);
        if (status == HttpStatus.SC_OK) {
          connOk = true;
        }

      } catch (Exception e) {
        LOGGER.error(
            String.format(
                "Target (%s) is not available. Status check failed for url %s",
                target.getName(), target.getStatusUrl()));
      } finally {
        if (client != null) {
          HttpConnectionManager mgr = client.getHttpConnectionManager();
          if (mgr instanceof SimpleHttpConnectionManager) {
            ((SimpleHttpConnectionManager) mgr).shutdown();
          }
        }
        if (getMethod != null) {
          getMethod.releaseConnection();
        }
        getMethod = null;
        client = null;
      }
    }
    return connOk;
  }
  @Override
  public void deployItemsToTarget(
      String site, List<PublishingSyncItem> filteredItems, PublishingTargetItem target)
      throws ContentNotFoundForPublishingException, UploadFailedException {
    LOGGER.debug(
        "Start deploying items for site \"{0}\", target \"{1}\", number of items \"{2}\"",
        site, target.getName(), filteredItems.size());
    URL requestUrl = null;
    try {
      requestUrl = new URL(target.getServerUrl());
    } catch (MalformedURLException e) {
      LOGGER.error("Invalid server URL for target {0}", target.getName());
      throw new UploadFailedException(site, target.getName(), target.getServerUrl(), e);
    }

    ByteArrayPartSource baps = null;
    PartSource metadataPart = null;
    StringPart stringPart = null;
    FilePart filePart = null;

    int numberOfBuckets = filteredItems.size() / target.getBucketSize() + 1;
    Iterator<PublishingSyncItem> iter = filteredItems.iterator();
    LOGGER.debug(
        "Divide all deployment items into {0} bucket(s) for  target {1}",
        numberOfBuckets, target.getName());
    List<DeploymentEventItem> eventItems = new ArrayList<DeploymentEventItem>();
    for (int bucketIndex = 0; bucketIndex < numberOfBuckets; bucketIndex++) {
      int cntFiles = 0;
      StringBuilder sbDeletedFiles = new StringBuilder();
      List<Part> formParts = new ArrayList<Part>();

      formParts.add(new StringPart(PASSWORD_REQUEST_PARAMETER, target.getPassword()));
      formParts.add(new StringPart(TARGET_REQUEST_PARAMETER, target.getTarget()));
      String siteId = target.getSiteId();
      if (StringUtils.isEmpty(siteId)) {
        siteId = site;
      }
      formParts.add(new StringPart(SITE_REQUEST_PARAMETER, siteId));

      LOGGER.debug(
          "Preparing deployment items (bucket {0}) for target {1}",
          bucketIndex + 1, target.getName());

      int loopSize =
          (filteredItems.size() - (bucketIndex * target.getBucketSize()) > target.getBucketSize())
              ? target.getBucketSize()
              : filteredItems.size() - bucketIndex * target.getBucketSize();
      for (int j = 0; j < loopSize; j++) {
        if (iter.hasNext()) {

          PublishingSyncItem item = iter.next();
          LOGGER.debug(
              "Parsing \"{0}\" , site \"{1}\"; for publishing on target \"{2}\"",
              item.getPath(), item.getSite(), target.getName());
          DeploymentEventItem eventItem = new DeploymentEventItem();
          eventItem.setSite(item.getSite());
          eventItem.setPath(item.getPath());
          eventItem.setUser(item.getUser());
          eventItem.setDateTime(new Date());

          if (item.getAction() == PublishingSyncItem.Action.DELETE) {
            eventItem.setState(DeploymentEventItem.STATE_DELETED);
            if (sbDeletedFiles.length() > 0) {
              sbDeletedFiles.append(FILES_SEPARATOR).append(item.getPath());
            } else {
              sbDeletedFiles.append(item.getPath());
            }
            if (item.getPath().endsWith("/" + _indexFile)) {
              sbDeletedFiles
                  .append(FILES_SEPARATOR)
                  .append(item.getPath().replace("/" + _indexFile, ""));
            }
          } else {

            if (item.getAction() == PublishingSyncItem.Action.NEW) {
              eventItem.setState(DeploymentEventItem.STATE_NEW);
            } else if (item.getAction() == PublishingSyncItem.Action.MOVE) {
              eventItem.setState(DeploymentEventItem.STATE_MOVED);
            } else {
              eventItem.setState(DeploymentEventItem.STATE_UPDATED);
            }

            LOGGER.debug("Get content for \"{0}\" , site \"{1}\"", item.getPath(), item.getSite());
            InputStream input =
                _contentRepository.getContent(site, null, item.getEnvironment(), item.getPath());
            try {
              if (input == null || input.available() < 0) {
                if (!_contentRepository.isFolder(site, item.getPath())
                    && _contentRepository.contentExists(site, item.getPath())) {
                  baps = null;
                  stringPart = null;
                  filePart = null;
                  formParts = null;
                  throw new ContentNotFoundForPublishingException(
                      site, target.getName(), item.getPath());
                } else {
                  // Content does not exist - skip deploying file
                  continue;
                }
              }
            } catch (IOException err) {
              LOGGER.error(
                  "Error reading input stream for content at path: "
                      + item.getPath()
                      + " site: "
                      + item.getSite());
              if (_contentRepository.contentExists(site, item.getPath())) {
                baps = null;
                stringPart = null;
                filePart = null;
                formParts = null;
                throw new ContentNotFoundForPublishingException(
                    site, target.getName(), item.getPath());
              } else {
                // Content does not exist - skip deploying file
                continue;
              }
            }
            String fileName = _contentRepository.getFilename(site, item.getPath());

            byte[] byteArray = null;

            try {
              byteArray = IOUtils.toByteArray(input);
            } catch (IOException e) {
              LOGGER.error("Error while converting input stream to byte array", e);
              baps = null;
              stringPart = null;
              filePart = null;
              formParts = null;
              if (_contentRepository.contentExists(site, item.getPath())) {
                throw new ContentNotFoundForPublishingException(
                    site, target.getName(), item.getPath());
              } else {
                // Content does not exist - skip deploying file
                continue;
              }
            } finally {
              IOUtils.closeQuietly(input);
              input = null;
            }
            baps = new ByteArrayPartSource(fileName, byteArray);

            LOGGER.debug(
                "Create http request parameters for \"{0}\" , site \"{1}\"; publishing on target \"{2}\"",
                item.getPath(), item.getSite(), target.getName());
            int idx = item.getPath().lastIndexOf("/");
            String relativePath = item.getPath().substring(0, idx + 1) + fileName;
            stringPart =
                new StringPart(CONTENT_LOCATION_REQUEST_PARAMETER + cntFiles, relativePath);
            formParts.add(stringPart);
            filePart = new FilePart(CONTENT_FILE_REQUEST_PARAMETER + cntFiles, baps);
            formParts.add(filePart);
            if (item.getAction() == PublishingSyncItem.Action.MOVE) {
              if (item.getOldPath() != null
                  && !item.getOldPath().equalsIgnoreCase(item.getPath())) {
                LOGGER.debug(
                    "Add old path to be deleted for MOVE action (\"{0}\")", item.getOldPath());
                eventItem.setOldPath(item.getOldPath());
                if (sbDeletedFiles.length() > 0) {
                  sbDeletedFiles.append(",").append(item.getOldPath());
                } else {
                  sbDeletedFiles.append(item.getOldPath());
                }
                if (item.getOldPath().endsWith("/" + _indexFile)) {
                  sbDeletedFiles
                      .append(FILES_SEPARATOR)
                      .append(item.getOldPath().replace("/" + _indexFile, ""));
                }
              }
            }

            if (target.isSendMetadata()) {
              LOGGER.debug(
                  "Adding meta data for content \"{0}\" site \"{0}\"",
                  item.getPath(), item.getSite());
              InputStream metadataStream = null;
              try {
                metadataStream = _contentRepository.getMetadataStream(site, item.getPath());
                metadataPart =
                    new ByteArrayPartSource(
                        fileName + ".meta", IOUtils.toByteArray(metadataStream));
                formParts.add(
                    new FilePart(METADATA_FILE_REQUEST_PARAMETER + cntFiles, metadataPart));
              } catch (IOException e) {
                LOGGER.error("Error while creating input stream with content metadata", e);
                baps = null;
                stringPart = null;
                filePart = null;
                formParts = null;
              } finally {
                IOUtils.closeQuietly(metadataStream);
                metadataPart = null;
              }
            }
          }
          cntFiles++;
          eventItems.add(eventItem);
        }
      }

      if (sbDeletedFiles.length() > 0) {
        formParts.add(new StringPart(DELETED_FILES_REQUEST_PARAMETER, sbDeletedFiles.toString()));
      }
      LOGGER.debug(
          "Create http request to deploy bucket {0} for target {1}",
          bucketIndex + 1, target.getName());

      PostMethod postMethod = null;
      HttpClient client = null;
      try {

        LOGGER.debug("Create HTTP Post Method");
        postMethod = new PostMethod(requestUrl.toString());
        postMethod.getParams().setBooleanParameter(HttpMethodParams.USE_EXPECT_CONTINUE, true);
        Part[] parts = new Part[formParts.size()];
        for (int i = 0; i < formParts.size(); i++) parts[i] = formParts.get(i);
        postMethod.setRequestEntity(new MultipartRequestEntity(parts, postMethod.getParams()));
        client = new HttpClient();

        LOGGER.debug("Execute HTTP POST request \"{0}\"", postMethod.getURI());
        int status = client.executeMethod(postMethod);
        if (status == HttpStatus.SC_OK) {
          LOGGER.info(
              "Successfully deployed bucket number {0} on target {1}",
              bucketIndex + 1, target.getName());
        } else {
          LOGGER.error(
              "Deployment failed for bucket number {0} on target {1}. Deployment agent returned status {2}",
              bucketIndex + 1, target.getName(), HttpStatus.getStatusText(status));
          throw new UploadFailedException(site, target.getName(), target.getServerUrl());
        }
      } catch (HttpException e) {
        LOGGER.error(
            "Publish failed for target {0} due to http protocol exception", target.getName());
        throw new UploadFailedException(site, target.getName(), target.getServerUrl(), e);
      } catch (IOException e) {
        LOGGER.error(
            "Publish failed for target {0} due to I/O (transport) exception", target.getName());
        throw new UploadFailedException(site, target.getName(), target.getServerUrl(), e);
      } finally {
        LOGGER.debug("Release http connection and release resources");
        if (client != null) {
          HttpConnectionManager mgr = client.getHttpConnectionManager();
          if (mgr instanceof SimpleHttpConnectionManager) {
            ((SimpleHttpConnectionManager) mgr).shutdown();
          }
        }
        if (postMethod != null) {
          postMethod.releaseConnection();
          postMethod = null;
          client = null;
        }
        baps = null;
        stringPart = null;
        filePart = null;
        formParts = null;
      }
    }

    LOGGER.debug(
        "Publishing deployment event for target \"{0}\" with \"{1}\" items.",
        target.getName(), eventItems.size());
    _contentRepository.publishDeployEvent(target.getName(), eventItems);

    LOGGER.info("Deployment successful on target {0}", target.getName());
    LOGGER.debug(
        "Finished deploying items for site \"{0}\", target \"{1}\", number of items \"{2}\"",
        site, target.getName(), filteredItems.size());
  }