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MINOR: Cleanup Valuefier to have the same efficient approach that is already used by BiValues

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Fixes #8103
This commit is contained in:
Armin 2017-08-30 03:52:42 +02:00 • committed by Armin Braun
parent 61982bcc5b
commit 44c61eaa12
3 changed files with 126 additions and 74 deletions
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191
logstash-core/src/main/java/org/logstash/Valuefier.java
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@ -1,9 +1,9 @@
package org.logstash; package org.logstash;
import java.io.Serializable;
import java.util.Collection; import java.util.Collection;
import java.util.List; import java.util.List;
import java.util.Map; import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import org.joda.time.DateTime; import org.joda.time.DateTime;
import org.jruby.RubyArray; import org.jruby.RubyArray;
import org.jruby.RubyBoolean; import org.jruby.RubyBoolean;
@ -22,85 +22,132 @@ import org.logstash.bivalues.BiValues;
import org.logstash.ext.JrubyTimestampExtLibrary; import org.logstash.ext.JrubyTimestampExtLibrary;
public final class Valuefier { public final class Valuefier {
private static final String PROXY_ERR_TEMPLATE = "Missing Valuefier handling for full class name=%s, simple name=%s, wrapped object=%s";
private static final String ERR_TEMPLATE = "Missing Valuefier handling for full class name=%s, simple name=%s";
private Valuefier(){} private static final Valuefier.Converter IDENTITY = input -> input;
private static Object convertJavaProxy(final JavaProxy jp) { private static final Valuefier.Converter FLOAT_CONVERTER =
final Object obj = JavaUtil.unwrapJavaObject(jp); input -> RubyUtil.RUBY.newFloat(((Number) input).doubleValue());
if (obj instanceof IRubyObject[]) {
return ConvertedList.newFromRubyArray((IRubyObject[]) obj);
}
if (obj instanceof List) {
return ConvertedList.newFromList((Collection<?>) obj);
}
try {
return BiValues.newBiValue(jp);
} catch (IllegalArgumentException e) {
final Class<?> cls = obj.getClass();
throw new IllegalArgumentException(String.format(PROXY_ERR_TEMPLATE, cls.getName(), cls.getSimpleName(), obj.getClass().getName()), e);
}
}
private static Object convertNonCollection(Object o) { private static final Valuefier.Converter JAVAPROXY_CONVERTER =
try { input -> {
return BiValues.newBiValue(o); final Object obj = JavaUtil.unwrapJavaObject((JavaProxy) input);
} catch (IllegalArgumentException e) { if (obj instanceof IRubyObject[]) {
final Class<?> cls = o.getClass(); return ConvertedList.newFromRubyArray((IRubyObject[]) obj);
throw new IllegalArgumentException(String.format(ERR_TEMPLATE, cls.getName(), cls.getSimpleName()), e); }
} if (obj instanceof List) {
return ConvertedList.newFromList((Collection<?>) obj);
}
try {
return BiValues.newBiValue(input);
} catch (IllegalArgumentException e) {
final Class<?> cls = obj.getClass();
throw new IllegalArgumentException(String.format(
"Missing Valuefier handling for full class name=%s, simple name=%s, wrapped object=%s",
cls.getName(), cls.getSimpleName(), obj.getClass().getName()
), e);
}
};
private static final Valuefier.Converter BIVALUES_CONVERTER = BiValues::newBiValue;
private static final Map<Class<?>, Valuefier.Converter> CONVERTER_MAP = initConverters();
private Valuefier() {
} }
public static Object convert(final Object o) { public static Object convert(final Object o) {
if (o instanceof RubyString || o instanceof RubyFloat if (o == null) {
|| o instanceof JrubyTimestampExtLibrary.RubyTimestamp return BiValues.NULL_BI_VALUE;
|| o instanceof ConvertedMap || o instanceof ConvertedList
|| o instanceof BiValue || o instanceof RubyBoolean) {
return o;
} }
if (o instanceof String) { final Class<?> cls = o.getClass();
return RubyUtil.RUBY.newString((String) o); final Valuefier.Converter converter = CONVERTER_MAP.get(cls);
if (converter != null) {
return converter.convert(o);
} }
if (o instanceof Float || o instanceof Double) { return fallbackConvert(o, cls);
return RubyUtil.RUBY.newFloat(((Number) o).doubleValue()); }
/**
* Fallback for types not covered by {@link Valuefier#convert(Object)} as a result of no
* {@link Valuefier.Converter} having been cached for the given class. Uses the fact that
* the only subclasses of the keys in {@link Valuefier#CONVERTER_MAP} as set up by
* {@link Valuefier#initConverters()} can be converted here and hence find the appropriate
* super class for unknown types by checking each entry in {@link Valuefier#CONVERTER_MAP} for
* being a supertype of the given class. If this fails {@link Valuefier#BIVALUES_CONVERTER}
* will be cached and used.
* @param o Object to convert
* @param cls Class of given object {@code o}
* @return Conversion result equivalent to what {@link Valuefier#convert(Object)} would return
*/
private static Object fallbackConvert(final Object o, final Class<?> cls) {
for (final Map.Entry<Class<?>, Valuefier.Converter> entry : CONVERTER_MAP.entrySet()) {
if (entry.getKey().isAssignableFrom(cls)) {
final Valuefier.Converter found = entry.getValue();
CONVERTER_MAP.put(cls, found);
return found.convert(o);
}
} }
if (o instanceof Boolean) { CONVERTER_MAP.put(cls, BIVALUES_CONVERTER);
return RubyUtil.RUBY.newBoolean((Boolean) o); return BIVALUES_CONVERTER.convert(o);
} }
if (o instanceof Timestamp) {
return JrubyTimestampExtLibrary.RubyTimestamp.newRubyTimestamp( private static Map<Class<?>, Valuefier.Converter> initConverters() {
RubyUtil.RUBY, (Timestamp) o final Map<Class<?>, Valuefier.Converter> converters =
); new ConcurrentHashMap<>(50, 0.2F, 1);
} converters.put(RubyString.class, IDENTITY);
if (o instanceof RubyTime) { converters.put(JrubyTimestampExtLibrary.RubyTimestamp.class, IDENTITY);
return JrubyTimestampExtLibrary.RubyTimestamp.newRubyTimestamp( converters.put(RubyFloat.class, IDENTITY);
RubyUtil.RUBY, new Timestamp(((RubyTime) o).getDateTime()) converters.put(ConvertedMap.class, IDENTITY);
); converters.put(ConvertedList.class, IDENTITY);
} converters.put(RubyBoolean.class, IDENTITY);
if (o instanceof DateTime) { converters.put(BiValue.class, IDENTITY);
return JrubyTimestampExtLibrary.RubyTimestamp.newRubyTimestamp( converters.put(String.class, input -> RubyUtil.RUBY.newString((String) input));
RubyUtil.RUBY, new Timestamp((DateTime) o) converters.put(Float.class, FLOAT_CONVERTER);
); converters.put(Double.class, FLOAT_CONVERTER);
} converters.put(Boolean.class, input -> RubyUtil.RUBY.newBoolean((Boolean) input));
if (o instanceof RubyHash) { converters.put(
return ConvertedMap.newFromRubyHash((RubyHash) o); Timestamp.class,
} input -> JrubyTimestampExtLibrary.RubyTimestamp.newRubyTimestamp(
if (o instanceof RubyArray) { RubyUtil.RUBY, (Timestamp) input
return ConvertedList.newFromRubyArray((RubyArray) o); )
} );
if (o instanceof Map) { converters.put(
return ConvertedMap.newFromMap((Map<Serializable, Object>) o); RubyTime.class, input -> JrubyTimestampExtLibrary.RubyTimestamp.newRubyTimestamp(
} RubyUtil.RUBY, new Timestamp(((RubyTime) input).getDateTime())
if (o instanceof List) { )
return ConvertedList.newFromList((List<Object>) o); );
} converters.put(
if (o instanceof MapJavaProxy){ DateTime.class, input -> JrubyTimestampExtLibrary.RubyTimestamp.newRubyTimestamp(
return ConvertedMap.newFromMap((Map)((MapJavaProxy) o).getObject()); RubyUtil.RUBY, new Timestamp((DateTime) input)
} )
if (o instanceof ArrayJavaProxy || o instanceof ConcreteJavaProxy){ );
return convertJavaProxy((JavaProxy) o); converters.put(RubyHash.class, input -> ConvertedMap.newFromRubyHash((RubyHash) input));
} converters.put(Map.class, input -> ConvertedMap.newFromMap((Map) input));
return o == null ? BiValues.NULL_BI_VALUE : convertNonCollection(o); converters.put(List.class, input -> ConvertedList.newFromList((List) input));
converters.put(ArrayJavaProxy.class, JAVAPROXY_CONVERTER);
converters.put(ConcreteJavaProxy.class, JAVAPROXY_CONVERTER);
converters.put(
MapJavaProxy.class,
input -> ConvertedMap.newFromMap((Map) ((MapJavaProxy) input).getObject())
);
converters.put(
RubyArray.class, input -> ConvertedList.newFromRubyArray((RubyArray) input)
);
return converters;
}
/**
* Converter from either a Java or a Ruby type to a type that both {@link Javafier} and
* {@link Rubyfier} are able to convert back their respective types efficiently.
*/
private interface Converter {
/**
* Converts a Java or a Ruby typed object to an object that can be efficiently converted
* back to Java as well as Ruby.
* @param input Either a Java or Ruby type object
* @return Object that can be converted back to Java as well as Ruby efficiently
*/
Object convert(Object input);
} }
} }

7
logstash-core/src/main/java/org/logstash/bivalues/BiValues.java
View file

@ -28,7 +28,12 @@ public final class BiValues {
final Class<?> cls = o.getClass(); final Class<?> cls = o.getClass();
final BiValues.BiValueType type = CONVERTER_CACHE.get(cls); final BiValues.BiValueType type = CONVERTER_CACHE.get(cls);
if (type == null) { if (type == null) {
throw new IllegalArgumentException("Unsupported class " + cls); throw new IllegalArgumentException(
String.format(
"Missing Converter handling for full class name=%s, simple name=%s",
cls.getName(), cls.getSimpleName()
)
);
} }
return type.build(o); return type.build(o);
} }

2
logstash-core/src/test/java/org/logstash/ValuefierTest.java
View file

@ -81,7 +81,7 @@ public class ValuefierTest extends TestBase {
public void testUnhandledObject() { public void testUnhandledObject() {
RubyMatchData md = new RubyMatchData(ruby); RubyMatchData md = new RubyMatchData(ruby);
exception.expect(IllegalArgumentException.class); exception.expect(IllegalArgumentException.class);
exception.expectMessage("Missing Valuefier handling for full class name=org.jruby.RubyMatchData, simple name=RubyMatchData"); exception.expectMessage("Missing Converter handling for full class name=org.jruby.RubyMatchData, simple name=RubyMatchData");
Valuefier.convert(md); Valuefier.convert(md);
} }