com.schooner.MemCached.command.StatsCommand Maven / Gradle / Ivy
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* Copyright (c) 2009 Schooner Information Technology, Inc.
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package com.schooner.MemCached.command;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.StringReader;
import java.util.HashMap;
import java.util.Map;
import com.schooner.MemCached.SchoonerSockIO;
import com.weicoder.extend.Logs;
/**
* Get the state of memcached server.
*
* @author Qinliang Lin
* @see com.schooner.MemCached.command.StatsCommand
* @since 2.5.0
*/
public class StatsCommand extends Command {
public static final String END = "END\r\n";
public static final String ERROR = "ERROR\r\n";
public static final String CLIENT_ERROR = "CLIENT_ERROR\r\n";
public static final String SERVER_ERROR = "SERVER_ERROR\r\n";
private String lineStart;
public StatsCommand(String command, String lineStart) {
textLine = command.getBytes();
this.lineStart = lineStart;
}
public Map response(SchoonerSockIO sock, short rid) throws IOException {
Map stats = new HashMap();
String line;
byte[] temp = sock.getResponse(rid);
BufferedReader reader = new BufferedReader(new StringReader(new String(temp)));
// loop over results
while ((line = reader.readLine()) != null) {
if (line.startsWith(lineStart)) {
String[] info = line.split(" ", 3);
String key = info[1];
String value = info[2];
stats.put(key, value);
} else if (END.equals(line)) {
// finish when we get end from server
break;
} else if (line.startsWith(ERROR) || line.startsWith(CLIENT_ERROR) || line.startsWith(SERVER_ERROR)) {
Logs.error("++++ failed to query stats");
Logs.error("++++ server response: " + line);
break;
}
}
return stats;
}
}