io.bosh.client.tasks.SpringTasks.java Source code

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Here is the source code for io.bosh.client.tasks.SpringTasks.java

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/*
 * Copyright 2015 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.bosh.client.tasks;

import io.bosh.client.internal.AbstractSpringOperations;

import java.net.URI;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.TimeUnit;

import org.springframework.web.client.RestOperations;

import rx.Observable;
import rx.schedulers.Schedulers;

/**
 * @author David Ehringer
 */
public class SpringTasks extends AbstractSpringOperations implements Tasks {

    private static final int DEFAULT_RECENT_TASK_COUNT = 30;
    private static final int TASK_TRACKING_POLL_INTERVAL = 1000;

    public SpringTasks(RestOperations restOperations, URI root) {
        super(restOperations, root);
    }

    @Override
    public Observable<List<Task>> listRunning() {
        return get(Task[].class,
                builder -> builder.pathSegment("tasks").queryParam("state", "processing,cancelling,queued"))
                        .map(response -> Arrays.asList(response));
    }

    @Override
    public Observable<List<Task>> listRecent() {
        return listRecent(DEFAULT_RECENT_TASK_COUNT);
    }

    @Override
    public Observable<List<Task>> listRecent(int count) {
        return get(Task[].class,
                builder -> builder.pathSegment("tasks").queryParam("limit", count).queryParam("verbose", 1))
                        .map(response -> Arrays.asList(response));
    }

    @Override
    public Observable<Task> get(String id) {
        return get(Task.class, builder -> builder.pathSegment("tasks", id));
    }

    @Override
    public Observable<Task> trackToCompletion(String id) {
        return Observable.interval(TASK_TRACKING_POLL_INTERVAL, TimeUnit.MILLISECONDS, Schedulers.io())
                .flatMap(tick -> get(id)).skipWhile(task -> task.isInProgress()) // TODO consider condition for max tries/timeout
                .first();
    }

}