public static void main(String[] args) throws Exception {
OptionParser parser = new OptionParser();
parser.accepts("no-message", "do not decode message(utf-8 strings)");
parser.accepts("no-offset", "do not print message offset");
parser.accepts("no-size", "do not print message size");
ArgumentAcceptingOptionSpec<Integer> countOpt =
parser
.accepts("c", "max count mesages.") //
.withRequiredArg()
.describedAs("count") //
.ofType(Integer.class)
.defaultsTo(-1);
ArgumentAcceptingOptionSpec<String> fileOpt =
parser
.accepts("file", "decode file list") //
.withRequiredArg()
.ofType(String.class)
.describedAs("filepath");
OptionSet options = parser.parse(args);
if (!options.has(fileOpt)) {
System.err.println("Usage: [options] --file <file>...");
parser.printHelpOn(System.err);
System.exit(1);
}
final boolean decode = !options.has("no-message");
final boolean withOffset = !options.has("no-offset");
final boolean withSize = !options.has("no-size");
int count = countOpt.value(options);
count = count <= 0 ? Integer.MAX_VALUE : count;
int index = 0;
final String logformat = "%s|%s|%s";
for (String filepath : fileOpt.values(options)) {
if (index >= count) break;
File file = new File(filepath);
String filename = file.getName();
final long startOffset = Long.parseLong(filename.substring(0, filename.lastIndexOf('.')));
FileMessageSet messageSet = new FileMessageSet(file, false);
long offset = 0L;
long totalSize = 0L;
try {
int messageCount = 0;
for (MessageAndOffset mao : messageSet) {
final Message msg = mao.message;
if (index >= count) {
break;
}
if (decode || withOffset || withSize) {
System.out.println(
format(
logformat, //
withOffset ? "" + (startOffset + offset) : "", //
withSize ? "" + msg.payloadSize() : "", //
decode ? Utils.toString(msg.payload(), "UTF-8") : ""));
}
offset = mao.offset;
totalSize += msg.payloadSize();
messageCount++;
index++;
}
System.out.println(
"-----------------------------------------------------------------------------");
System.out.println(filepath);
System.out.println("total message count: " + messageCount);
System.out.println("total message size: " + totalSize);
System.out.println("=============================================");
} finally {
messageSet.close();
}
}
}
