TestPrint.java

/*
 * Copyright (c) 2015 Spotify AB.
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 com.spotify.heroic.shell.task;

import com.spotify.heroic.dagger.CoreComponent;
import com.spotify.heroic.shell.AbstractShellTaskParams;
import com.spotify.heroic.shell.ShellIO;
import com.spotify.heroic.shell.ShellTask;
import com.spotify.heroic.shell.TaskName;
import com.spotify.heroic.shell.TaskParameters;
import com.spotify.heroic.shell.TaskUsage;
import dagger.Component;
import eu.toolchain.async.AsyncFramework;
import eu.toolchain.async.AsyncFuture;
import org.kohsuke.args4j.Option;

import javax.inject.Inject;

@TaskUsage("(Test) Test to print some lines")
@TaskName("test-print")
public class TestPrint implements ShellTask {
    private final AsyncFramework async;

    @Inject
    public TestPrint(AsyncFramework async) {
        this.async = async;
    }

    @Override
    public TaskParameters params() {
        return new Parameters();
    }

    @Override
    public AsyncFuture<Void> run(final ShellIO io, final TaskParameters base) throws Exception {
        final Parameters params = (Parameters) base;

        for (long i = 0; i < params.count; i++) {
            io.out().println(String.format("Count: %08d", i));
        }

        return async.resolved();
    }

    private static class Parameters extends AbstractShellTaskParams {
        @Option(name = "--count", usage = "Number of lines to print")
        private long count = 10000;
    }

    public static TestPrint setup(final CoreComponent core) {
        return DaggerTestPrint_C.builder().coreComponent(core).build().task();
    }

    @Component(dependencies = CoreComponent.class)
    interface C {
        TestPrint task();
    }
}