import com.spotify.docker.client.messages.ProgressMessage; //导入依赖的package包/类
@Override
public void progress(ProgressMessage message) throws DockerException {
  if (message.error() != null) {
    handleError(message.error());
  } else if (message.progressDetail() != null) {
    handleProgress(message.id(), message.status(), message.progress());
  } else if ((message.status() != null) || (message.stream() != null)) {
    handleGeneric(message.stream(), message.status());
  }

  String imageId = message.buildImageId();
  if (imageId != null) {
    builtImageId = imageId;
  }
}
 

import com.spotify.docker.client.messages.ProgressMessage; //导入依赖的package包/类
@Override
public void progress(ProgressMessage message) throws DockerException {
    // Error handling (taken from
    // com.spotify.docker.client.LoggingPullHandler)
    if (message.error() != null) {
        if (message.error().contains("404") || message.error().contains("not found")) {
            throw new ImageNotFoundException(image, message.toString());
        } else {
            throw new ImagePullFailedException(image, message.toString());
        }
    }

    processProgress(message);
}
 

import com.spotify.docker.client.messages.ProgressMessage; //导入依赖的package包/类
protected synchronized void processProgress(ProgressMessage message) {
    if (message.status().startsWith(SWARM_PULLING_STARTED_STATUS)) {
        ++pullStartCount;
        if (pullStartCount == 2) {
            LOGGER.info("Pulling image {}", image);
            pullingStartedLogged = true;
        }
        return;
    }

    if (!pullingStartedLogged) {
        if (message.status().startsWith(SINGLE_IMAGE_UP_TO_DATE_STATUS)) {
            LOGGER.info("Image {} is up to date und does not have to be pulled.", image);
        } else if (message.status().startsWith(SINGLE_DOWNLOADING_STATUS)) {
            LOGGER.info("Image {} is being pulled...", image);
            pullingStartedLogged = true;
        }
    } else {
        if (message.status().startsWith(SINGLE_PULLING_COMPLETE_STATUS)) {
            LOGGER.info("Pulled image {}.", image);
        } else if ((pullStartCount > 0) && (message.status().endsWith(SWARM_PULLING_STOPPED_STATUS))) {
            ++pullEndCount;
            if (pullStartCount == pullEndCount) {
                LOGGER.info("Pulled image {}", image);
            }
        }
    }
}
 

import com.spotify.docker.client.messages.ProgressMessage; //导入依赖的package包/类
protected void logPullProgress(Trace trace, ProgressMessage progress) {
	if (trace.isDebugEnabled()) {
		if ("downloading".equalsIgnoreCase(progress.status())) {
			//ommit donloading messages
			return;
		}
		trace.event(Level.DEBUG, "pull progress (id, status, progress, error)", progress.id(), progress.status(), progress.progress(), progress.error());
	}
}