com.github.dockerjava.core.InvocationBuilder Maven / Gradle / Ivy

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package com.github.dockerjava.core;

import com.fasterxml.jackson.core.type.TypeReference;
import com.github.dockerjava.api.async.ResultCallback;
import com.github.dockerjava.api.model.Frame;
import com.github.dockerjava.core.async.ResultCallbackTemplate;

import java.io.IOException;
import java.io.InputStream;
import java.util.concurrent.CountDownLatch;

public interface InvocationBuilder {

    InvocationBuilder accept(MediaType mediaType);

    InvocationBuilder header(String name, String value);

    void delete();

    void get(ResultCallback resultCallback);

     T get(TypeReference typeReference);

     void get(TypeReference typeReference, ResultCallback resultCallback);

    InputStream post(Object entity);

    void post(Object entity, InputStream stdin, ResultCallback resultCallback);

     T post(Object entity, TypeReference typeReference);

     void post(Object entity, TypeReference typeReference, ResultCallback resultCallback);

     T post(TypeReference typeReference, InputStream body);

     void post(TypeReference typeReference, ResultCallback resultCallback, InputStream body);

    void postStream(InputStream body);

    InputStream get();

    void put(InputStream body, MediaType mediaType);

    /**
     * Implementation of {@link ResultCallback} with the single result event expected.
     */
    class AsyncResultCallback
            extends ResultCallbackTemplate, A_RES_T> {

        private A_RES_T result = null;

        private final CountDownLatch resultReady = new CountDownLatch(1);

        @Override
        public void onNext(A_RES_T object) {
            onResult(object);
        }

        private void onResult(A_RES_T object) {
            if (resultReady.getCount() == 0) {
                throw new IllegalStateException("Result has already been set");
            }

            try {
                result = object;
            } finally {
                resultReady.countDown();
            }
        }

        @Override
        public void close() throws IOException {
            try {
                super.close();
            } finally {
                resultReady.countDown();
            }
        }

        /**
         * Blocks until {@link ResultCallback#onNext(Object)} was called for the first time
         */
        @SuppressWarnings("unchecked")
        public A_RES_T awaitResult() {
            try {
                resultReady.await();
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            }
            throwFirstError();
            return result;
        }
    }
}