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package com.github.dockerjava.jaxrs;

import static javax.ws.rs.client.Entity.entity;

import javax.ws.rs.client.Invocation;
import javax.ws.rs.client.Invocation.Builder;
import javax.ws.rs.client.WebTarget;
import javax.ws.rs.core.MediaType;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.github.dockerjava.api.async.ResultCallback;
import com.github.dockerjava.api.command.PullImageCmd;
import com.github.dockerjava.api.model.AuthConfig;
import com.github.dockerjava.api.model.PullResponseItem;
import com.github.dockerjava.core.DockerClientConfig;
import com.github.dockerjava.core.async.JsonStreamProcessor;
import com.github.dockerjava.jaxrs.async.AbstractCallbackNotifier;
import com.github.dockerjava.jaxrs.async.POSTCallbackNotifier;

public class PullImageCmdExec extends AbstrAsyncDockerCmdExec implements
        PullImageCmd.Exec {

    private static final Logger LOGGER = LoggerFactory.getLogger(PullImageCmdExec.class);

    public PullImageCmdExec(WebTarget baseResource, DockerClientConfig dockerClientConfig) {
        super(baseResource, dockerClientConfig);
    }

    private Invocation.Builder resourceWithOptionalAuthConfig(PullImageCmd command, Invocation.Builder request) {
        AuthConfig authConfig = command.getAuthConfig();
        if (authConfig != null) {
            request = request.header("X-Registry-Auth", registryAuth(authConfig));
        }
        return request;
    }

    @Override
    protected AbstractCallbackNotifier callbackNotifier(PullImageCmd command,
            ResultCallback resultCallback) {

        WebTarget webResource = getBaseResource().path("/images/create").queryParam("tag", command.getTag())
                .queryParam("fromImage", command.getRepository()).queryParam("registry", command.getRegistry());

        LOGGER.trace("POST: {}", webResource);
        Builder builder = resourceWithOptionalAuthConfig(command, webResource.request()).accept(
                MediaType.APPLICATION_OCTET_STREAM_TYPE);

        return new POSTCallbackNotifier(new JsonStreamProcessor(
                PullResponseItem.class), resultCallback, builder, entity(null, MediaType.APPLICATION_JSON));
    }
}