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package edu.stanford.nlp.util;
import edu.stanford.nlp.util.logging.StanfordRedwoodConfiguration;
import java.io.File;
import java.io.FilenameFilter;
import java.io.IOException;
import java.lang.annotation.*;
import java.lang.reflect.Array;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.net.InetAddress;
import java.util.*;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
import static edu.stanford.nlp.util.logging.Redwood.Util.*;
/**
* A class to set command line options. To use, create a static class into which you'd like
* to put your properties. Then, for each field, set the annotation:
*
*
*
* import edu.stanford.nlp.util.Execution.Option
*
* class Props {
* @Option(name="anIntOption", required=false)
* public static int anIntOption = 7 // default value is 7
* @Option(name="anotherOption", required=false)
* public static File aCastableOption = new File("/foo")
* }
*
*
*
*
* You can then set options with {@link Execution#exec(Runnable, String[])},
* or with {@link Execution#fillOptions(java.util.Properties)}.
*
*
*
* If your default classpath has many classes in it, you can select a subset of them
* by using {@link Execution#fillOptions(Class[], java.util.Properties)}, or some variant.
*
*/
public class Execution {
@Documented
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.FIELD)
public @interface Option {
String name() default "";
String gloss() default "";
boolean required() default false;
String alt() default "";
}
@SuppressWarnings("MismatchedReadAndWriteOfArray")
private static final String[] IGNORED_JARS = {
};
private static final Class[] BOOTSTRAP_CLASSES = {
Execution.class,
};
@Option(name = "option_classes", gloss = "Fill options from these classes")
public static Class[] optionClasses = null;
@Option(name = "threads", gloss = "Number of threads on machine")
public static int threads = Runtime.getRuntime().availableProcessors();
@Option(name = "host", gloss = "Name of computer we are running on")
public static String host = "(unknown)";
@SuppressWarnings("FieldCanBeLocal")
@Option(name = "strict", gloss = "If true, make sure that all options passed in are used somewhere")
private static boolean strict = false;
@SuppressWarnings("FieldCanBeLocal")
@Option(name = "exec.verbose", gloss = "If true, print options as they are set.")
private static boolean verbose = false;
static {
try {
host = InetAddress.getLocalHost().getHostName();
} catch (Exception ignored) {
}
}
/**
* A lazy iterator over files, not loading all of them into memory at once.
*/
public static class LazyFileIterator implements Iterator {
private FilenameFilter filter;
private File[] dir;
private Stack parents = new Stack();
private Stack indices = new Stack();
private int toReturn = -1;
public LazyFileIterator(File path, final String filter) {
this(path, (file, name) -> {
String filePath = (file.getPath() + "/" + name);
return new File(filePath).isDirectory() || filePath.matches(filter);
});
}
public LazyFileIterator(File dir, FilenameFilter filter) {
if (!dir.exists()) throw new IllegalArgumentException("Could not find directory: " + dir.getPath());
if (!dir.isDirectory()) throw new IllegalArgumentException("Not a directory: " + dir.getPath());
this.filter = filter;
this.dir = dir.listFiles(filter);
enqueue();
}
private void enqueue() {
toReturn += 1;
boolean good = (toReturn < dir.length && !dir[toReturn].isDirectory());
while (!good) {
if (toReturn >= dir.length) {
//(case: pop)
if (parents.isEmpty()) {
toReturn = -1;
return; //this is where we exit
} else {
dir = parents.pop();
toReturn = indices.pop();
}
} else if (dir[toReturn].isDirectory()) {
//(case: push)
parents.push(dir);
indices.push(toReturn + 1);
dir = dir[toReturn].listFiles(filter);
toReturn = 0;
} else {
throw new IllegalStateException("File is invalid, but in range and not a directory: " + dir[toReturn]);
}
//(check if good)
good = (toReturn < dir.length && !dir[toReturn].isDirectory());
}
// if we reach here we found something
}
@Override
public boolean hasNext() {
return toReturn >= 0;
}
@Override
public File next() {
if (toReturn >= dir.length || toReturn < 0) throw new IllegalStateException("No more elements!");
File rtn = dir[toReturn];
enqueue();
return rtn;
}
@Override
public void remove() {
throw new IllegalArgumentException("NOT IMPLEMENTED");
}
}
/*
* ----------
* OPTIONS
* ----------
*/
private static void fillField(Object instance, Field f, String value) {
//--Verbose
if (verbose) {
Option opt = f.getAnnotation(Option.class);
StringBuilder b = new StringBuilder("setting ").append(f.getDeclaringClass().getName()).append("#").append(f.getName()).append(" ");
if (opt != null) {
b.append("[").append(opt.name()).append("] ");
}
b.append("to: ").append(value);
log(b.toString());
}
try {
//--Permissions
boolean accessState = true;
if (Modifier.isFinal(f.getModifiers())) {
fatal("Option cannot be final: " + f);
}
if (!f.isAccessible()) {
accessState = false;
f.setAccessible(true);
}
//--Set Value
Object objVal = MetaClass.cast(value, f.getGenericType());
if (objVal != null) {
if (objVal.getClass().isArray()) {
//(case: array)
Object[] array = (Object[]) objVal;
// error check
if (!f.getType().isArray()) {
fatal("Setting an array to a non-array field. field: " + f + " value: " + Arrays.toString(array) + " src: " + value);
}
// create specific array
Object toSet = Array.newInstance(f.getType().getComponentType(), array.length);
for (int i = 0; i < array.length; i++) {
Array.set(toSet, i, array[i]);
}
// set value
f.set(instance, toSet);
} else {
//case: not array
f.set(instance, objVal);
}
} else {
fatal("Cannot assign option field: " + f + " value: " + value + "; invalid type");
}
//--Permissions
if (!accessState) {
f.setAccessible(false);
}
} catch (IllegalArgumentException e) {
err(e);
fatal("Cannot assign option field: " + f.getDeclaringClass().getCanonicalName() + "." + f.getName() + " value: " + value + " cause: " + e.getMessage());
} catch (IllegalAccessException e) {
err(e);
fatal("Cannot access option field: " + f.getDeclaringClass().getCanonicalName() + "." + f.getName());
} catch (Exception e) {
err(e);
fatal("Cannot assign option field: " + f.getDeclaringClass().getCanonicalName() + "." + f.getName() + " value: " + value + " cause: " + e.getMessage());
}
}
@SuppressWarnings("rawtypes")
private static Class filePathToClass(String cpEntry, String path) {
if (path.length() <= cpEntry.length()) {
throw new IllegalArgumentException("Illegal path: cp=" + cpEntry
+ " path=" + path);
}
if (path.charAt(cpEntry.length()) != '/') {
throw new IllegalArgumentException("Illegal path: cp=" + cpEntry
+ " path=" + path);
}
path = path.substring(cpEntry.length() + 1);
path = path.replaceAll("/", ".").substring(0, path.length() - 6);
try {
return Class.forName(path,
false,
ClassLoader.getSystemClassLoader());
} catch (ClassNotFoundException e) {
throw fail("Could not load class at path: " + path);
} catch (NoClassDefFoundError ex) {
warn("Class at path " + path + " is unloadable");
return null;
}
}
private static boolean isIgnored(String path) {
for (String ignore : IGNORED_JARS) {
if (path.endsWith(ignore)) {
return true;
}
}
return false;
}
public static Class[] getVisibleClasses() {
//--Variables
List> classes = new ArrayList>();
// (get classpath)
String pathSep = System.getProperty("path.separator");
String[] cp = System.getProperties().getProperty("java.class.path",
null).split(pathSep);
// --Fill Options
// (get classes)
for (String entry : cp) {
log("Checking cp " + entry);
//(should skip?)
if (entry.equals(".") || entry.trim().length() == 0) {
continue;
}
//(no, don't skip)
File f = new File(entry);
if (f.isDirectory()) {
// --Case: Files
LazyFileIterator iter = new LazyFileIterator(f, ".*class$");
while (iter.hasNext()) {
//(get the associated class)
Class clazz = filePathToClass(entry, iter.next().getPath());
if (clazz != null) {
//(add the class if it's valid)
classes.add(clazz);
}
}
} else //noinspection StatementWithEmptyBody
if (!isIgnored(entry)) {
// --Case: Jar
try {
JarFile jar = new JarFile(f);
Enumeration e = jar.entries();
while (e.hasMoreElements()) {
//(for each jar file element)
JarEntry jarEntry = e.nextElement();
String clazz = jarEntry.getName();
if (clazz.matches(".*class$")) {
//(if it's a class)
clazz = clazz.substring(0, clazz.length() - 6)
.replaceAll("/", ".");
//(add it)
try {
classes.add(
Class.forName(clazz,
false,
ClassLoader.getSystemClassLoader()));
} catch (ClassNotFoundException ex) {
warn("Could not load class in jar: " + f + " at path: " + clazz);
} catch (NoClassDefFoundError ex) {
debug("Could not scan class: " + clazz + " (in jar: " + f + ")");
}
}
}
} catch (IOException e) {
warn("Could not open jar file: " + f + "(are you sure the file exists?)");
}
} else {
//case: ignored jar
}
}
return classes.toArray(new Class[classes.size()]);
}
/**
* Get all the declared fields of this class and all super classes.
*/
private static Field[] scrapeFields(Class clazz) throws Exception {
List fields = new ArrayList<>();
while (clazz != null && !clazz.equals(Object.class)) {
fields.addAll(Arrays.asList(clazz.getDeclaredFields()));
clazz = clazz.getSuperclass();
}
return fields.toArray(new Field[fields.size()]);
}
@SuppressWarnings("rawtypes")
protected static Map fillOptionsImpl(
Object[] instances,
Class[] classes,
Properties options,
boolean ensureAllOptions) {
//--Create Class->Object Mapping
Map class2object = new HashMap();
if (instances != null) {
for (int i = 0; i < classes.length; ++i) {
assert instances[i].getClass() == classes[i];
class2object.put(classes[i], instances[i]);
Class mySuper = instances[i].getClass().getSuperclass();
while (mySuper != null && !mySuper.equals(Object.class)) {
if (!class2object.containsKey(mySuper)) {
class2object.put(mySuper, instances[i]);
}
mySuper = mySuper.getSuperclass();
}
}
}
//--Get Fillable Options
Map canFill = new HashMap();
Map> required = new HashMap>(); /* */
Map interner = new HashMap();
for (Class c : classes) {
Field[] fields;
try {
fields = scrapeFields(c);
} catch (Throwable e) {
debug("Could not check fields for class: " + c.getName() + " (caused by " + e.getClass() + ": " + e.getMessage() + ")");
continue;
}
boolean someOptionFilled = false;
boolean someOptionFound = false;
for (Field f : fields) {
Option o = f.getAnnotation(Option.class);
if (o != null) {
someOptionFound = true;
//(check if field is static)
if ((f.getModifiers() & Modifier.STATIC) == 0 && instances == null) {
continue;
}
someOptionFilled = true;
//(required marker)
Pair mark = Pair.makePair(false, false);
if (o.required()) {
mark = Pair.makePair(true, false);
}
//(add main name)
String name = o.name().toLowerCase();
if (name.equals("")) {
name = f.getName().toLowerCase();
}
if (canFill.containsKey(name)) {
String name1 = canFill.get(name).getDeclaringClass().getCanonicalName() + "." + canFill.get(name).getName();
String name2 = f.getDeclaringClass().getCanonicalName() + "." + f.getName();
if (!name1.equals(name2)) {
fatal("Multiple declarations of option " + name + ": " + name1 + " and " + name2);
} else {
err("Class is in classpath multiple times: " + canFill.get(name).getDeclaringClass().getCanonicalName());
}
}
canFill.put(name, f);
required.put(name, mark);
interner.put(name, name);
//(add alternate names)
if (!o.alt().equals("")) {
for (String alt : o.alt().split(" *, *")) {
alt = alt.toLowerCase();
if (canFill.containsKey(alt) && !alt.equals(name))
throw new IllegalArgumentException("Multiple declarations of option " + alt + ": " + canFill.get(alt) + " and " + f);
canFill.put(alt, f);
if (mark.first) required.put(alt, mark);
interner.put(alt, name);
}
}
}
}
//(check to ensure that something got filled, if any @Option annotation was found)
if (someOptionFound && !someOptionFilled) {
warn("found @Option annotations in class " + c + ", but didn't set any of them (all options were instance variables and no instance given?)");
}
}
//--Fill Options
for (Object rawKey : options.keySet()) {
String rawKeyStr = rawKey.toString();
String key = rawKey.toString().toLowerCase();
// (get values)
String value = options.get(rawKey).toString();
assert value != null;
Field target = canFill.get(key);
// (mark required option as fulfilled)
Pair mark = required.get(key);
if (mark != null && mark.first) {
required.put(key, Pair.makePair(true, true));
}
// (fill the field)
if (target != null) {
// (case: declared option)z
fillField(class2object.get(target.getDeclaringClass()), target, value);
} else if (ensureAllOptions) {
// (case: undeclared option)
// split the key
int lastDotIndex = rawKeyStr.lastIndexOf('.');
if (lastDotIndex < 0) {
fatal("Unrecognized option: " + key);
}
if (!rawKeyStr.startsWith("log.")) { // ignore Redwood options
String className = rawKeyStr.substring(0, lastDotIndex);
String fieldName = rawKeyStr.substring(lastDotIndex + 1);
// get the class
Class clazz = null;
try {
clazz = ClassLoader.getSystemClassLoader().loadClass(className);
} catch (Exception e) {
err("Could not set option: " + rawKey + "; either the option is mistyped, not defined, or the class " + className + " does not exist.");
}
// get the field
if (clazz != null) {
try {
target = clazz.getField(fieldName);
} catch (Exception e) {
err("Could not set option: " + rawKey + "; no such field: " + fieldName + " in class: " + className);
}
if (target != null) {
log("option overrides " + target + " to '" + value + "'");
fillField(class2object.get(target.getDeclaringClass()), target, value);
} else {
err("Could not set option: " + rawKey + "; no such field: " + fieldName + " in class: " + className);
}
}
}
}
}
//--Ensure Required
boolean good = true;
for (String key : required.keySet()) {
Pair mark = required.get(key);
if (mark.first && !mark.second) {
err("Missing required option: " + interner.get(key) + " ");
required.put(key, Pair.makePair(true, true)); //don't duplicate error messages
good = false;
}
}
if (!good) {
System.exit(1);
}
return canFill;
}
protected static Map fillOptionsImpl(
Object[] instances,
Class[] classes,
Properties options) {
return fillOptionsImpl(instances, classes, options, strict);
}
/*
* ----------
* EXECUTION
* ----------
*/
public static void fillOptions(Class[] classes, Properties options) {
fillOptionsImpl(null, classes, options);
}
public static void fillOptions(Class clazz, Properties options) {
fillOptionsImpl(null, new Class[]{ clazz }, options);
}
public static void fillOptions(Properties props, String[] args) {
//(convert to map)
Properties options = StringUtils.argsToProperties(args);
for (String key : props.stringPropertyNames()) {
options.put(key, props.getProperty(key));
}
//(bootstrap)
Map bootstrapMap = fillOptionsImpl(null, BOOTSTRAP_CLASSES, options, false); //bootstrap
for (String key : bootstrapMap.keySet()) {
options.remove(key);
}
//(fill options)
Class[] visibleClasses = optionClasses;
if (visibleClasses == null) visibleClasses = getVisibleClasses(); //get classes
fillOptionsImpl(null, visibleClasses, options);//fill
}
@SuppressWarnings("UnusedDeclaration")
public static void fillOptions(Class[] optionClasses, Properties props, String[] args) {
Execution.optionClasses = optionClasses;
fillOptions(props, args);
}
public static void fillOptions(Properties props) {
fillOptions(props, new String[0]);
}
public static void fillOptions(Class[] classes,
String[] args) {
Properties options = StringUtils.argsToProperties(args); //get options
fillOptionsImpl(null, BOOTSTRAP_CLASSES, options, false); //bootstrap
fillOptionsImpl(null, classes, options);
}
public static void fillOptions(Class clazz,
String[] args) {
Class[] classes = new Class[1];
classes[0] = clazz;
fillOptions(classes, args);
}
public static void fillOptions(Object[] instances, Properties options) {
Class[] classes = new Class[instances.length];
for (int i = 0; i < classes.length; ++i) { classes[i] = instances[i].getClass(); }
fillOptionsImpl(instances, classes, options);
}
public static void fillOptions(Object instance, Properties options) {
fillOptions(new Object[]{ instance }, options);
}
public static void fillOptions(Object[] instances,
String[] args) {
Properties options = StringUtils.argsToProperties(args); //get options
fillOptionsImpl(null, BOOTSTRAP_CLASSES, options, false); //bootstrap
Class[] classes = new Class[instances.length];
for (int i = 0; i < classes.length; ++i) { classes[i] = instances[i].getClass(); }
fillOptionsImpl(instances, classes, options);
}
public static void fillOptions(Object instance,
String[] args) {
fillOptions(new Object[]{ instance }, args);
}
public static void exec(Runnable toRun) {
exec(toRun, new String[0]);
}
public static void exec(Runnable toRun, Class[] optionClasses) {
Execution.optionClasses = optionClasses;
exec(toRun, new String[0]);
}
public static void exec(Runnable toRun, String[] args) {
exec(toRun, args, false);
}
public static void exec(Runnable toRun, String[] args, Class[] optionClasses) {
Execution.optionClasses = optionClasses;
exec(toRun, args, false);
}
public static void exec(Runnable toRun, String[] args, Class[] optionClasses, boolean exit) {
Execution.optionClasses = optionClasses;
exec(toRun, StringUtils.argsToProperties(args), exit);
}
public static void exec(Runnable toRun, String[] args, boolean exit) {
exec(toRun, StringUtils.argsToProperties(args), exit);
}
public static void exec(Runnable toRun, Properties options) {
exec(toRun, options, false);
}
public static void exec(Runnable toRun, Properties options, boolean exit) {
//--Init
//(bootstrap)
Map bootstrapMap = fillOptionsImpl(null, BOOTSTRAP_CLASSES, options, false); //bootstrap
for (String key : bootstrapMap.keySet()) {
options.remove(key);
}
startTrack("init");
//(fill options)
Class[] visibleClasses = optionClasses;
if (visibleClasses == null) visibleClasses = getVisibleClasses(); //get classes
fillOptionsImpl(null, visibleClasses, options);//fill
endTrack("init");
// -- Setup Logging
StanfordRedwoodConfiguration.apply(options);
//--Run Program
int exitCode = 0;
startTrack("main");
try {
toRun.run();
} catch (Throwable t) {
log(FORCE, t);
exitCode = 1;
}
endTracksTo("main"); // end main
if (exit) {
System.exit(exitCode);
}
}
private static String threadRootClass() {
StackTraceElement[] trace = Thread.currentThread().getStackTrace();
StackTraceElement elem = trace[trace.length - 1];
return elem.getClassName();
}
@SuppressWarnings("UnusedDeclaration")
public static void usageAndExit(String[] expectedArgs) {
String clazz = threadRootClass();
StringBuilder b = new StringBuilder();
b.append("USAGE: ").append(clazz).append(" ");
for (String arg : expectedArgs) {
b.append(arg).append(" ");
}
System.out.println(b.toString());
System.exit(0);
}
@SuppressWarnings("UnusedDeclaration")
public static void usageAndExit(Map argToFlagsMap) {
String clazz = threadRootClass();
StringBuilder b = new StringBuilder();
b.append("USAGE: ").append(clazz).append("\n\t");
for (String arg : argToFlagsMap.keySet()) {
String[] flags = argToFlagsMap.get(arg);
if (flags == null || flags.length == 0) {
throw new IllegalArgumentException(
"No flags registered for arg: " + arg);
}
b.append("{");
for (int i = 0; i < flags.length - 1; i++) {
b.append(flags[i]).append(",");
}
b.append(flags[flags.length - 1]).append("}");
}
System.out.println(b.toString());
System.exit(0);
}
}