001/*
002 * (C) Copyright 2017 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     bdelbosc
018 */
019package org.nuxeo.lib.stream.tools.command;
020
021import org.apache.commons.cli.CommandLine;
022import org.apache.commons.cli.Option;
023import org.apache.commons.cli.Options;
024import org.nuxeo.lib.stream.log.LogLag;
025import org.nuxeo.lib.stream.log.LogManager;
026
027/**
028 * @since 9.3
029 */
030public class LagCommand extends Command {
031
032    protected static final String NAME = "lag";
033
034    @Override
035    public String name() {
036        return NAME;
037    }
038
039    @Override
040    public void updateOptions(Options options) {
041        options.addOption(
042                Option.builder("l").longOpt("log-name").desc("Log name").hasArg().argName("LOG_NAME").build());
043    }
044
045    @Override
046    public boolean run(LogManager manager, CommandLine cmd) throws InterruptedException {
047        String name = cmd.getOptionValue("log-name");
048        if (name != null) {
049            lag(manager, name);
050        } else {
051            lag(manager);
052        }
053        return true;
054    }
055
056    protected void lag(LogManager manager) {
057        System.out.println("# " + manager);
058        for (String name : manager.listAll()) {
059            lag(manager, name);
060        }
061    }
062
063    protected void lag(LogManager manager, String name) {
064        System.out.println("## Log: " + name);
065        manager.listConsumerGroups(name).forEach(group -> renderLag(group, manager.getLag(name, group)));
066    }
067
068    protected void renderLag(String group, LogLag lag) {
069        System.out.println("### Group: " + group);
070        System.out.println("| lag | pos | end | posOffset | endOffset |\n" + "| --- | ---: | ---: | ---: | ---: |");
071        System.out.println(String.format("|%d|%d|%d|%d|%d|", lag.lag(), lag.lower(), lag.upper(), lag.lowerOffset(),
072                lag.upperOffset()));
073    }
074}