co.cask.cdap.shell.CLIConfig.java Source code

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Here is the source code for co.cask.cdap.shell.CLIConfig.java

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/*
 * Copyright  2014 Cask Data, Inc.
 *
 * 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 co.cask.cdap.shell;

import co.cask.cdap.client.config.ClientConfig;
import co.cask.cdap.common.http.HttpRequestConfig;
import co.cask.cdap.security.authentication.client.AuthenticationClient;
import co.cask.cdap.security.authentication.client.basic.BasicAuthenticationClient;
import co.cask.cdap.shell.command.VersionCommand;
import com.google.common.base.Charsets;
import com.google.common.base.Objects;
import com.google.common.base.Throwables;
import com.google.common.collect.Lists;
import com.google.common.io.CharStreams;
import com.google.common.io.InputSupplier;

import java.io.IOException;
import java.io.InputStream;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.List;

/**
 * Configuration for the CDAP CLI.
 */
public class CLIConfig {

    public static final String PROP_VERIFY_SSL_CERT = "verify.ssl.cert";

    private static final int DEFAULT_PORT = 10000;
    private static final int DEFAULT_SSL_PORT = 10443;
    private static final boolean DEFAULT_SSL = false;

    private final ClientConfig clientConfig;
    private final String version;
    private final boolean verifySSLCert;

    private String hostname;
    private List<HostnameChangeListener> hostnameChangeListeners;
    private int port;
    private int sslPort;
    private URI uri;

    /**
     * @param hostname Hostname of the CDAP server to interact with (e.g. "example.com")
     */
    public CLIConfig(String hostname) {
        this.verifySSLCert = Boolean.valueOf(System.getProperty(PROP_VERIFY_SSL_CERT, "true"));
        this.hostname = Objects.firstNonNull(hostname, "localhost");
        this.port = DEFAULT_PORT;
        this.uri = URI.create(String.format("http://%s:%d", hostname, port));
        this.sslPort = DEFAULT_SSL_PORT;
        AuthenticationClient authenticationClient = new BasicAuthenticationClient();
        authenticationClient.setConnectionInfo(hostname, port, DEFAULT_SSL);
        this.clientConfig = new ClientConfig(hostname, port, new HttpRequestConfig(15000, 15000, verifySSLCert),
                new HttpRequestConfig(0, 0, verifySSLCert), authenticationClient);
        this.version = tryGetVersion();
        this.hostnameChangeListeners = Lists.newArrayList();
    }

    private static String tryGetVersion() {
        try {
            InputSupplier<? extends InputStream> versionFileSupplier = new InputSupplier<InputStream>() {
                @Override
                public InputStream getInput() throws IOException {
                    return VersionCommand.class.getClassLoader().getResourceAsStream("VERSION");
                }
            };
            return CharStreams.toString(CharStreams.newReaderSupplier(versionFileSupplier, Charsets.UTF_8));
        } catch (IOException e) {
            throw Throwables.propagate(e);
        }
    }

    public boolean isVerifySSLCert() {
        return verifySSLCert;
    }

    public String getHost() {
        return hostname;
    }

    public int getPort() {
        return port;
    }

    public int getSslPort() {
        return sslPort;
    }

    public ClientConfig getClientConfig() {
        return clientConfig;
    }

    public String getVersion() {
        return version;
    }

    public void setConnection(String hostname, int port, boolean ssl) throws URISyntaxException {
        this.hostname = hostname;
        if (ssl) {
            this.sslPort = port;
        } else {
            this.port = port;
        }
        this.uri = URI.create(String.format("%s://%s:%d", ssl ? "https" : "http", hostname, port));
        this.clientConfig.setHostnameAndPort(hostname, port, ssl);
        for (HostnameChangeListener listener : hostnameChangeListeners) {
            listener.onHostnameChanged(hostname);
        }
    }

    public void addHostnameChangeListener(HostnameChangeListener listener) {
        this.hostnameChangeListeners.add(listener);
    }

    public URI getURI() {
        return uri;
    }

    /**
     * Listener for hostname changes.
     */
    public interface HostnameChangeListener {
        void onHostnameChanged(String newHostname);
    }
}