public void testSyslogOutputFormat() throws IOException {
// set the output format.
FlumeConfiguration conf = FlumeConfiguration.get();
conf.set(FlumeConfiguration.COLLECTOR_OUTPUT_FORMAT, "syslog");
// build a sink that outputs to that format.
File f = FileUtil.mktempdir();
SinkBuilder builder = EscapedCustomDfsSink.builder();
EventSink snk = builder.build(new Context(), "file:///" + f.getPath() + "/sub-%{service}");
Event e = new EventImpl("this is a test message".getBytes());
Attributes.setString(e, "service", "foo");
snk.open();
snk.append(e);
snk.close();
ByteArrayOutputStream exWriter = new ByteArrayOutputStream();
SyslogEntryFormat fmt = new SyslogEntryFormat();
fmt.format(exWriter, e);
exWriter.close();
String expected = new String(exWriter.toByteArray());
// check the output to make sure it is what we expected.
File fo = new File(f.getPath() + "/sub-foo");
FileReader fr = new FileReader(fo);
BufferedReader br = new BufferedReader(fr);
String read = br.readLine() + "\n";
assertEquals(expected, read);
}
/**
* Test to write few log lines, compress using gzip, write to disk, read back the compressed file
* and verify the written lines.
*
* @throws IOException
*/
public void testGzipOutputFormat() throws IOException {
// set the output format.
FlumeConfiguration conf = FlumeConfiguration.get();
conf.set(FlumeConfiguration.COLLECTOR_OUTPUT_FORMAT, "syslog");
conf.set(FlumeConfiguration.COLLECTOR_DFS_COMPRESS_GZIP, "true");
// build a sink that outputs to that format.
File f = FileUtil.mktempdir();
SinkBuilder builder = EscapedCustomDfsSink.builder();
EventSink snk = builder.build(new Context(), "file:///" + f.getPath() + "/sub-%{service}");
Event e = new EventImpl("this is a test message".getBytes());
Attributes.setString(e, "service", "foo");
snk.open();
snk.append(e);
snk.close();
ByteArrayOutputStream exWriter = new ByteArrayOutputStream();
SyslogEntryFormat fmt = new SyslogEntryFormat();
fmt.format(exWriter, e);
exWriter.close();
String expected = new String(exWriter.toByteArray());
// check the output to make sure it is what we expected.
// read the gzip file and verify the contents
GZIPInputStream gzin = new GZIPInputStream(new FileInputStream(f.getPath() + "/sub-foo.gz"));
byte[] buf = new byte[1];
StringBuilder output = new StringBuilder();
while ((gzin.read(buf)) > 0) {
output.append(new String(buf));
}
assertEquals(expected, output.toString());
assertTrue("temp folder successfully deleted", FileUtil.rmr(f));
}