com.aliyun.openservices.odps.console.commands.logview.LogViewBaseAction.java Source code

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Here is the source code for com.aliyun.openservices.odps.console.commands.logview.LogViewBaseAction.java

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/*
 * 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.aliyun.openservices.odps.console.commands.logview;

import java.util.Map;

import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.CommandLineParser;
import org.apache.commons.cli.GnuParser;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;
import org.apache.commons.lang.StringUtils;

import com.aliyun.odps.Instance;
import com.aliyun.odps.Instance.TaskStatus;
import com.aliyun.odps.OdpsException;
import com.aliyun.openservices.odps.console.ODPSConsoleException;
import com.aliyun.openservices.odps.console.output.DefaultOutputWriter;

public abstract class LogViewBaseAction {
    protected LogViewContext ctx;

    public LogViewContext getCtx() {
        return ctx;
    }

    public void setCtx(LogViewContext ctx) {
        this.ctx = ctx;
    }

    protected LogViewBaseAction() {
    }

    public abstract void run() throws OdpsException, ODPSConsoleException;

    public abstract String getActionName();

    public void parse(String[] args) throws LogViewArgumentException {
        Options options = getOptions();
        CommandLineParser parser = new GnuParser();
        try {
            CommandLine cl = parser.parse(options, args);
            configure(cl);
        } catch (ParseException e) {
            throw new LogViewArgumentException(e.getMessage());
        }
    }

    protected void configure(CommandLine cl) throws LogViewArgumentException {
        if (cl.getArgs().length > 0) {
            throw new LogViewArgumentException("Unexpected argument: " + cl.getArgs()[0]);
        }
    }

    protected Options getOptions() {
        Options options = new Options();
        return options;
    }

    protected DefaultOutputWriter getWriter() {
        return ctx.getSession().getOutputWriter();
    }

    protected String getHelpPrefix() {
        return "log " + getActionName();
    }

    protected static String deduceTaskName(Instance inst) throws ODPSConsoleException, OdpsException {
        Map<String, TaskStatus> ss = inst.getTaskStatus();
        if (ss.size() == 1) {
            for (String key : ss.keySet()) {
                return key;
            }
        } else {
            throw new ODPSConsoleException(
                    "Please specify one of these tasks with option '-t': " + StringUtils.join(ss.keySet(), ','));
        }
        return null;
    }
}