/*
* Copyright 2010 Nabeel Mukhtar
*
* 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 com.google.code.stackexchange.client.examples;
import java.text.MessageFormat;
import java.util.List;
import java.util.concurrent.Future;
import org.apache.commons.cli.BasicParser;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.HelpFormatter;
import org.apache.commons.cli.Option;
import org.apache.commons.cli.OptionBuilder;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;
import com.google.code.stackexchange.client.AsyncStackExchangeApiClient;
import com.google.code.stackexchange.client.StackExchangeApiClientFactory;
import com.google.code.stackexchange.schema.Badge;
import com.google.code.stackexchange.schema.Tag;
/**
* The Class AsyncApiExample.
*/
public class AsyncApiExample {
/** The Constant APPLICATION_KEY_OPTION. */
private static final String APPLICATION_KEY_OPTION = "key";
/** The Constant HELP_OPTION. */
private static final String HELP_OPTION = "help";
/**
* The main method.
*
* @param args the arguments
*
* @throws Exception the exception
*/
public static void main(String[] args) throws Exception {
Options options = buildOptions();
try {
CommandLine line = new BasicParser().parse(options, args);
processCommandLine(line, options);
} catch(ParseException exp ) {
System.err.println(exp.getMessage());
printHelp(options);
}
}
/**
* Process command line.
*
* @param line the line
* @param options the options
*
* @throws Exception the exception
*/
private static void processCommandLine(CommandLine line, Options options) throws Exception {
if(line.hasOption(HELP_OPTION)) {
printHelp(options);
} else if(line.hasOption(APPLICATION_KEY_OPTION)) {
final String keyValue = line.getOptionValue(APPLICATION_KEY_OPTION);
final StackExchangeApiClientFactory factory = StackExchangeApiClientFactory.newInstance(keyValue);
final AsyncStackExchangeApiClient client = factory.createAsyncStackExchangeApiClient();
System.out.println("Fetching badges and tags asynchronously.");
Future<List<Badge>> badgesFuture = client.getBadges();
Future<List<Tag>> tagsFuture = client.getTags();
System.out.println("Done fetching badges and tags asynchronously. Now blocking for result.");
List<Badge> badges = badgesFuture.get();
System.out.println("============ Badges ============");
for (Badge badge : badges) {
printResult(badge);
}
List<Tag> tags = tagsFuture.get();
System.out.println("============ Tags ============");
for (Tag tag : tags) {
printResult(tag);
}
} else {
printHelp(options);
}
}
/**
* Prints the result.
*
* @param tag the tag
*/
private static void printResult(Tag tag) {
System.out.println(tag.getName() + ":" + tag.getCount());
}
/**
* Prints the result.
*
* @param badge the badge
*/
private static void printResult(Badge badge) {
System.out.println(badge.getName() + ":" + badge.getRank() + ":" + badge.getAwardCount());
}
/**
* Builds the options.
*
* @return the options
*/
private static Options buildOptions() {
Options opts = new Options();
String helpMsg = "Print this message.";
Option help = new Option(HELP_OPTION, helpMsg);
opts.addOption(help);
String consumerKeyMsg = "You API Key.";
OptionBuilder.withArgName("key");
OptionBuilder.hasArg();
OptionBuilder.withDescription(consumerKeyMsg);
Option consumerKey = OptionBuilder.create(APPLICATION_KEY_OPTION);
opts.addOption(consumerKey);
return opts;
}
/**
* Prints the help.
*
* @param options the options
*/
private static void printHelp(Options options) {
int width = 80;
String syntax = AsyncApiExample.class.getName() + " <options>";
String header = MessageFormat.format("\nThe -{0} option is required.", APPLICATION_KEY_OPTION);
String footer = "";
new HelpFormatter().printHelp(width, syntax, header, options, footer, false);
}
}