at.ac.univie.isc.asio.munin.Munin.java Source code

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Here is the source code for at.ac.univie.isc.asio.munin.Munin.java

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/*
 * #%L
 * asio cli
 * %%
 * Copyright (C) 2013 - 2015 Research Group Scientific Computing, University of Vienna
 * %%
 * 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.
 * #L%
 */
package at.ac.univie.isc.asio.munin;

import at.ac.univie.isc.asio.Pigeon;
import at.ac.univie.isc.asio.security.AllowAllVerifier;
import at.ac.univie.isc.asio.security.NoopTrustManager;
import at.ac.univie.isc.asio.tool.PropertyHierarchy;
import com.google.common.io.Resources;
import org.glassfish.jersey.client.authentication.HttpAuthenticationFeature;

import javax.net.ssl.SSLContext;
import javax.ws.rs.client.Client;
import javax.ws.rs.client.ClientBuilder;
import java.io.InputStream;
import java.security.GeneralSecurityException;
import java.util.Locale;
import java.util.Map;
import java.util.Properties;
import java.util.logging.Level;
import java.util.logging.LogManager;
import java.util.logging.Logger;

/**
 * Command line runner.
 */
public final class Munin {
    static final String CLI_PROPERTIES = "cli.properties";
    static final String APPLICATION_PROPERTIES = "application.properties";
    static final String LOGGING_PROPERTIES = "logging.properties";

    /**
     * Run the client with parameters from the command line.
     */
    public static void main(String[] args) throws Exception {
        try {
            Locale.setDefault(Locale.ENGLISH);

            try (final InputStream stream = Resources.getResource(LOGGING_PROPERTIES).openStream()) {
                LogManager.getLogManager().readConfiguration(stream);
            }

            final Properties props = new PropertyHierarchy().loadEmbedded(CLI_PROPERTIES).loadSystem()
                    .loadExternal(CLI_PROPERTIES).parseCommandLine(args).loadEmbedded(APPLICATION_PROPERTIES).get();

            if (Boolean.parseBoolean(props.getProperty("debug"))) {
                Logger.getLogger("at.ac.univie.isc.asio").setLevel(Level.FINE);
            }

            System.exit(new Munin(Settings.fromProperties(props)).run(args));

        } catch (final Exception e) {
            System.err.println("[ERROR] fatal - " + e.getMessage());
            System.exit(1);
        }
    }

    private final Settings config;

    Munin(final Settings config) {
        this.config = config;
    }

    public int run(final String[] args) throws Exception {
        final Client client = httpClient();
        try {
            final Map<String, Command> mappings = Command.Create.all(console(), pigeon(client), config);
            final Controller controller = new Controller(console(), errors(), mappings);
            controller.run(args);
            return controller.getExitCode();
        } finally {
            client.close();
        }
    }

    public Appendable console() {
        return System.out;
    }

    public Appendable errors() {
        return System.err;
    }

    public Pigeon pigeon(final Client client) {
        return Pigeon.connectTo(client.target(config.getServerAddress()));
    }

    public Client httpClient() throws GeneralSecurityException {
        final Client client;
        if (config.isInsecureConnection()) {
            final SSLContext ssl = SSLContext.getInstance("TLS");
            ssl.init(null, NoopTrustManager.asArray(), null);
            client = ClientBuilder.newBuilder().hostnameVerifier(AllowAllVerifier.instance()).sslContext(ssl)
                    .build();
        } else {
            client = ClientBuilder.newClient();
        }
        final HttpAuthenticationFeature authentication = HttpAuthenticationFeature.basic(config.getUsername(),
                config.getPassword());
        client.register(authentication);
        return client;
    }
}