com.taobao.arthas.grpcweb.grpc.objectUtils.JavaObjectConverter Maven / Gradle / Ivy
The newest version!
package com.taobao.arthas.grpcweb.grpc.objectUtils;
import java.lang.reflect.Array;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import io.arthas.api.ArthasServices.ArrayElement;
import io.arthas.api.ArthasServices.ArrayValue;
import io.arthas.api.ArthasServices.BasicValue;
import io.arthas.api.ArthasServices.CollectionValue;
import io.arthas.api.ArthasServices.CollectionValue.Builder;
import io.arthas.api.ArthasServices.JavaField;
import io.arthas.api.ArthasServices.JavaFields;
import io.arthas.api.ArthasServices.JavaObject;
import io.arthas.api.ArthasServices.MapEntry;
import io.arthas.api.ArthasServices.MapValue;
import io.arthas.api.ArthasServices.NullValue;
import io.arthas.api.ArthasServices.UnexpandedObject;
public class JavaObjectConverter {
private static final int MAX_DEPTH = 5;
public static JavaObject toJavaObject(Object obj) {
return toJavaObject(obj, 0);
}
public static JavaObject toJavaObjectWithExpand(Object obj, int expand){
int depth;
if(expand <= 0){
depth = MAX_DEPTH - 1;
}else if(expand >= MAX_DEPTH){
depth = 0;
}else {
depth = MAX_DEPTH - expand;
}
return toJavaObject(obj, depth);
}
public static JavaObject toJavaObject(Object obj, int depth) {
if (depth >= MAX_DEPTH) {
return null;
}
if (obj == null) {
return JavaObject.newBuilder().setNullValue(NullValue.getDefaultInstance()).build();
}
JavaObject.Builder objectBuilder = JavaObject.newBuilder();
Class objClazz = obj.getClass();
objectBuilder.setClassName(objClazz.getName());
// 基础类型
if (isBasicType(objClazz)) {
return objectBuilder.setBasicValue(createBasicValue(obj)).build();
} else if (obj instanceof Collection) { // 集合
return objectBuilder.setCollection(createCollectionValue((Collection) obj, depth)).build();
} else if (obj instanceof Map) { // map
return objectBuilder.setMap(createMapValue((Map) obj, depth)).build();
} else if (objClazz.isArray()) {
return objectBuilder.setArrayValue(toArrayValue(obj, depth)).build();
}
Field[] fields = objClazz.getDeclaredFields();
List javaFields = new ArrayList<>();
for (Field field : fields) {
field.setAccessible(true);
JavaField.Builder fieldBuilder = JavaField.newBuilder();
fieldBuilder.setName(field.getName());
try {
Object fieldValue = field.get(obj);
Class fieldType = field.getType();
if (fieldValue == null) {
fieldBuilder.setNullValue(NullValue.newBuilder().setClassName(fieldType.getName()).build());
} else if (fieldType.isArray()) {
ArrayValue arrayValue = toArrayValue(fieldValue, depth + 1);
if (arrayValue != null) {
fieldBuilder.setArrayValue(arrayValue);
} else {
fieldBuilder.setUnexpandedObject(
UnexpandedObject.newBuilder().setClassName(fieldType.getName()).build());
}
} else if (fieldType.isPrimitive() || isBasicType(fieldType)) {
BasicValue basicValue = createBasicValue(fieldValue);
fieldBuilder.setBasicValue(basicValue);
} else if (fieldValue instanceof Collection) { // 集合
fieldBuilder.setCollection(createCollectionValue((Collection) fieldValue, depth));
} else if (fieldValue instanceof Map) { // map
fieldBuilder.setMap(createMapValue((Map) fieldValue, depth));
} else {
JavaObject nestedObject = toJavaObject(fieldValue, depth + 1);
if (nestedObject != null) {
fieldBuilder.setObjectValue(nestedObject);
} else {
fieldBuilder.setUnexpandedObject(
UnexpandedObject.newBuilder().setClassName(fieldType.getName()).build());
}
}
} catch (IllegalAccessException e) {
// TODO ignore ?
}
javaFields.add(fieldBuilder.build());
}
objectBuilder.setFields(JavaFields.newBuilder().addAllFields(javaFields).build());
return objectBuilder.build();
}
private static ArrayValue toArrayValue(Object array, int depth) {
if (array == null || depth >= MAX_DEPTH) {
return null;
}
ArrayValue.Builder arrayBuilder = ArrayValue.newBuilder();
Class componentType = array.getClass().getComponentType();
arrayBuilder.setClassName(componentType.getName());
int length = Array.getLength(array);
for (int i = 0; i < length; i++) {
Object element = Array.get(array, i);
if (element != null) {
if (componentType.isArray()) {
ArrayValue nestedArrayValue = toArrayValue(element, depth + 1);
if (nestedArrayValue != null) {
arrayBuilder.addElements(ArrayElement.newBuilder().setArrayValue(nestedArrayValue));
} else {
arrayBuilder.addElements(ArrayElement.newBuilder().setUnexpandedObject(
UnexpandedObject.newBuilder().setClassName(element.getClass().getName()).build()));
}
} else if (componentType.isPrimitive() || isBasicType(componentType)) {
BasicValue basicValue = createBasicValue(element);
arrayBuilder.addElements(ArrayElement.newBuilder().setBasicValue(basicValue));
} else {
JavaObject nestedObject = toJavaObject(element, depth + 1);
if (nestedObject != null) {
arrayBuilder.addElements(ArrayElement.newBuilder().setObjectValue(nestedObject));
} else {
arrayBuilder.addElements(ArrayElement.newBuilder().setUnexpandedObject(
UnexpandedObject.newBuilder().setClassName(element.getClass().getName()).build()));
}
}
} else {
arrayBuilder.addElements(ArrayElement.newBuilder()
.setNullValue(NullValue.newBuilder().setClassName(componentType.getName()).build()));
}
}
return arrayBuilder.build();
}
private static MapValue createMapValue(Map map, int depth) {
MapValue.Builder builder = MapValue.newBuilder();
for (Entry entry : map.entrySet()) {
MapEntry mapEntry = MapEntry.newBuilder().setKey(toJavaObject(entry.getKey(), depth))
.setValue(toJavaObject(entry.getValue(), depth)).build();
builder.addEntries(mapEntry);
}
return builder.build();
}
private static CollectionValue createCollectionValue(Collection collection, int depth) {
Builder builder = CollectionValue.newBuilder();
for (Object o : collection) {
builder.addElements(toJavaObject(o, depth));
}
return builder.build();
}
private static BasicValue createBasicValue(Object value) {
BasicValue.Builder builder = BasicValue.newBuilder();
if (value instanceof Integer) {
builder.setInt((int) value);
} else if (value instanceof Long) {
builder.setLong((long) value);
} else if (value instanceof Float) {
builder.setFloat((float) value);
} else if (value instanceof Double) {
builder.setDouble((double) value);
} else if (value instanceof Boolean) {
builder.setBoolean((boolean) value);
} else if (value instanceof String) {
builder.setString((String) value);
}
return builder.build();
}
private static boolean isBasicType(Class clazz) {
if (String.class.equals(clazz) || Integer.class.equals(clazz) || Long.class.equals(clazz)
|| Float.class.equals(clazz) || Double.class.equals(clazz) || Boolean.class.equals(clazz)) {
return true;
}
return false;
}
}