// create the context with the parameter
PigContext pigContext = new PigContext(execType, properties);
// create the static script state object
String commandLine = LoadFunc.join((AbstractList<String>)Arrays.asList(args), " ");
ScriptState scriptState = ScriptState.start(commandLine, pigContext);
if (listener != null) {
scriptState.registerListener(listener);
}
if(logFileName == null && !userSpecifiedLog) {
logFileName = validateLogFile(properties.getProperty("pig.logfile"), null);
}
pigContext.getProperties().setProperty("pig.logfile", (logFileName == null? "": logFileName));
// configure logging
configureLog4J(properties, pigContext);
if(logFileName != null) {
log.info("Logging error messages to: " + logFileName);
}
if(optimizerRules.size() > 0) {
pigContext.getProperties().setProperty("pig.optimizer.rules", ObjectSerializer.serialize(optimizerRules));
}
if (properties.get("udf.import.list")!=null)
PigContext.initializeImportList((String)properties.get("udf.import.list"));
PigContext.setClassLoader(pigContext.createCl(null));
// construct the parameter substitution preprocessor
Grunt grunt = null;
BufferedReader in;
String substFile = null;
switch (mode) {
case FILE: {
FileLocalizer.FetchFileRet localFileRet = FileLocalizer.fetchFile(properties, file);
if (localFileRet.didFetch) {
properties.setProperty("pig.jars.relative.to.dfs", "true");
}
scriptState.setFileName(file);
if (embedded) {
return runEmbeddedScript(pigContext, localFileRet.file.getPath(), engine);
} else {
SupportedScriptLang type = determineScriptType(localFileRet.file.getPath());
if (type != null) {
return runEmbeddedScript(pigContext, localFileRet.file
.getPath(), type.name().toLowerCase());
}
}
in = new BufferedReader(new FileReader(localFileRet.file));
// run parameter substitution preprocessor first
substFile = file + ".substituted";
pin = runParamPreprocessor(properties, in, params, paramFiles,
substFile, debug || dryrun || checkScriptOnly);
if (dryrun) {
if (dryrun(substFile, pigContext)) {
log.info("Dry run completed. Substituted pig script is at "
+ substFile
+ ". Expanded pig script is at "
+ file + ".expanded");
} else {
log.info("Dry run completed. Substituted pig script is at "
+ substFile);
}
return ReturnCode.SUCCESS;
}
logFileName = validateLogFile(logFileName, file);
pigContext.getProperties().setProperty("pig.logfile", logFileName);
// Set job name based on name of the script
pigContext.getProperties().setProperty(PigContext.JOB_NAME,
"PigLatin:" +new File(file).getName()
);
if (!debug) {
new File(substFile).deleteOnExit();
}
scriptState.setScript(new File(file));
grunt = new Grunt(pin, pigContext);
gruntCalled = true;
if(checkScriptOnly) {
grunt.checkScript(substFile);
System.err.println(file + " syntax OK");
rc = ReturnCode.SUCCESS;
} else {
int results[] = grunt.exec();
rc = getReturnCodeForStats(results);
}
return rc;
}
case STRING: {
if(checkScriptOnly) {
System.err.println("ERROR:" +
"-c (-check) option is only valid " +
"when executing pig with a pig script file)");
return ReturnCode.ILLEGAL_ARGS;
}
// Gather up all the remaining arguments into a string and pass them into
// grunt.
StringBuffer sb = new StringBuffer();
String remainders[] = opts.getRemainingArgs();
for (int i = 0; i < remainders.length; i++) {
if (i != 0) sb.append(' ');
sb.append(remainders[i]);
}
scriptState.setScript(sb.toString());
in = new BufferedReader(new StringReader(sb.toString()));
grunt = new Grunt(in, pigContext);
gruntCalled = true;
int results[] = grunt.exec();
return getReturnCodeForStats(results);
}
default:
break;
}
// If we're here, we don't know yet what they want. They may have just
// given us a jar to execute, they might have given us a pig script to
// execute, or they might have given us a dash (or nothing) which means to
// run grunt interactive.
String remainders[] = opts.getRemainingArgs();
if (remainders == null) {
if(checkScriptOnly) {
System.err.println("ERROR:" +
"-c (-check) option is only valid " +
"when executing pig with a pig script file)");
return ReturnCode.ILLEGAL_ARGS;
}
// Interactive
mode = ExecMode.SHELL;
ConsoleReader reader = new ConsoleReader(System.in, new OutputStreamWriter(System.out));
reader.setDefaultPrompt("grunt> ");
final String HISTORYFILE = ".pig_history";
String historyFile = System.getProperty("user.home") + File.separator + HISTORYFILE;
reader.setHistory(new History(new File(historyFile)));
ConsoleReaderInputStream inputStream = new ConsoleReaderInputStream(reader);
grunt = new Grunt(new BufferedReader(new InputStreamReader(inputStream)), pigContext);
grunt.setConsoleReader(reader);
gruntCalled = true;
grunt.run();
return ReturnCode.SUCCESS;
} else {
// They have a pig script they want us to run.
if (remainders.length > 1) {
throw new RuntimeException("Encountered unexpected arguments on command line - please check the command line.");
}
mode = ExecMode.FILE;
FileLocalizer.FetchFileRet localFileRet = FileLocalizer.fetchFile(properties, remainders[0]);
if (localFileRet.didFetch) {
properties.setProperty("pig.jars.relative.to.dfs", "true");
}
scriptState.setFileName(remainders[0]);
if (embedded) {
return runEmbeddedScript(pigContext, localFileRet.file.getPath(), engine);
} else {
SupportedScriptLang type = determineScriptType(localFileRet.file.getPath());
if (type != null) {
return runEmbeddedScript(pigContext, localFileRet.file
.getPath(), type.name().toLowerCase());
}
}
in = new BufferedReader(new FileReader(localFileRet.file));
// run parameter substitution preprocessor first
substFile = remainders[0] + ".substituted";
pin = runParamPreprocessor(properties, in, params, paramFiles, substFile, debug || dryrun || checkScriptOnly);
if (dryrun) {
if (dryrun(substFile, pigContext)) {
log.info("Dry run completed. Substituted pig script is at "
+ substFile
+ ". Expanded pig script is at "
+ remainders[0] + ".expanded");
} else {
log.info("Dry run completed. Substituted pig script is at "
+ substFile);
}
return ReturnCode.SUCCESS;
}
logFileName = validateLogFile(logFileName, remainders[0]);
pigContext.getProperties().setProperty("pig.logfile", logFileName);
if (!debug) {
new File(substFile).deleteOnExit();
}
// Set job name based on name of the script
pigContext.getProperties().setProperty(PigContext.JOB_NAME,
"PigLatin:" +new File(remainders[0]).getName()
);
scriptState.setScript(localFileRet.file);
grunt = new Grunt(pin, pigContext);
gruntCalled = true;
if(checkScriptOnly) {