package com.ctrip.framework.apollo.demo.api;
import com.google.common.base.Charsets;
import com.ctrip.framework.apollo.Config;
import com.ctrip.framework.apollo.ConfigChangeListener;
import com.ctrip.framework.apollo.ConfigFile;
import com.ctrip.framework.apollo.ConfigFileChangeListener;
import com.ctrip.framework.apollo.ConfigService;
import com.ctrip.framework.apollo.core.enums.ConfigFileFormat;
import com.ctrip.framework.apollo.model.ConfigChange;
import com.ctrip.framework.apollo.model.ConfigChangeEvent;
import com.ctrip.framework.apollo.model.ConfigFileChangeEvent;
import com.ctrip.framework.foundation.Foundation;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
/**
* @author Jason Song(song_s@ctrip.com)
*/
public class ApolloConfigDemo {
private static final Logger logger = LoggerFactory.getLogger(ApolloConfigDemo.class);
private String DEFAULT_VALUE = "undefined";
private Config config;
private Config publicConfig;
private ConfigFile applicationConfigFile;
private ConfigFile xmlConfigFile;
public ApolloConfigDemo() {
ConfigChangeListener changeListener = new ConfigChangeListener() {
@Override
public void onChange(ConfigChangeEvent changeEvent) {
logger.info("Changes for namespace {}", changeEvent.getNamespace());
for (String key : changeEvent.changedKeys()) {
ConfigChange change = changeEvent.getChange(key);
logger.info("Change - key: {}, oldValue: {}, newValue: {}, changeType: {}",
change.getPropertyName(), change.getOldValue(), change.getNewValue(),
change.getChangeType());
}
}
};
config = ConfigService.getAppConfig();
config.addChangeListener(changeListener);
publicConfig = ConfigService.getConfig("FX.apollo");
publicConfig.addChangeListener(changeListener);
applicationConfigFile = ConfigService.getConfigFile("application", ConfigFileFormat.Properties);
xmlConfigFile = ConfigService.getConfigFile("datasources", ConfigFileFormat.XML);
xmlConfigFile.addChangeListener(new ConfigFileChangeListener() {
@Override
public void onChange(ConfigFileChangeEvent changeEvent) {
logger.info(changeEvent.toString());
}
});
}
private String getConfig(String key) {
String result = config.getProperty(key, DEFAULT_VALUE);
if (DEFAULT_VALUE.equals(result)) {
result = publicConfig.getProperty(key, DEFAULT_VALUE);
}
logger.info(String.format("Loading key : %s with value: %s", key, result));
return result;
}
private void print(String namespace) {
switch (namespace) {
case "application":
print(applicationConfigFile);
return;
case "xml":
print(xmlConfigFile);
return;
}
}
private void print(ConfigFile configFile) {
if (!configFile.hasContent()) {
System.out.println("No config file content found for " + configFile.getNamespace());
return;
}
System.out.println("=== Config File Content for " + configFile.getNamespace() + " is as follows: ");
System.out.println(configFile.getContent());
}
private void printEnvInfo() {
String message = String.format("AppId: %s, Env: %s, DC: %s, IP: %s", Foundation.app()
.getAppId(), Foundation.server().getEnvType(), Foundation.server().getDataCenter(),
Foundation.net().getHostAddress());
System.out.println(message);
}
public static void main(String[] args) throws IOException {
ApolloConfigDemo apolloConfigDemo = new ApolloConfigDemo();
apolloConfigDemo.printEnvInfo();
System.out.println(
"Apollo Config Demo. Please input key to get the value.");
while (true) {
System.out.print("> ");
String input = new BufferedReader(new InputStreamReader(System.in, Charsets.UTF_8)).readLine();
if (input == null || input.length() == 0) {
continue;
}
input = input.trim();
if (input.equalsIgnoreCase("application")) {
apolloConfigDemo.print("application");
continue;
}
if (input.equalsIgnoreCase("xml")) {
apolloConfigDemo.print("xml");
continue;
}
if (input.equalsIgnoreCase("quit")) {
System.exit(0);
}
apolloConfigDemo.getConfig(input);
}
}
}