| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.phoenix.expression.function; |
| |
| import static org.apache.phoenix.query.QueryServices.DYNAMIC_JARS_DIR_KEY; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.InvocationTargetException; |
| import java.util.List; |
| import java.util.concurrent.ConcurrentMap; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.hbase.HBaseConfiguration; |
| import org.apache.hadoop.hbase.io.ImmutableBytesWritable; |
| import org.apache.hadoop.hbase.util.DynamicClassLoader; |
| import org.apache.hadoop.io.WritableUtils; |
| import org.apache.phoenix.compile.KeyPart; |
| import org.apache.phoenix.expression.Expression; |
| import org.apache.phoenix.expression.visitor.ExpressionVisitor; |
| import org.apache.phoenix.parse.PFunction; |
| import org.apache.phoenix.schema.PName; |
| import org.apache.phoenix.schema.PNameFactory; |
| import org.apache.phoenix.schema.tuple.Tuple; |
| import org.apache.phoenix.schema.types.PDataType; |
| |
| import com.google.common.annotations.VisibleForTesting; |
| import com.google.common.collect.MapMaker; |
| |
| public class UDFExpression extends ScalarFunction { |
| |
| private static Configuration config = HBaseConfiguration.create(); |
| |
| private static final ConcurrentMap<PName, DynamicClassLoader> tenantIdSpecificCls = |
| new MapMaker().concurrencyLevel(3).weakValues().makeMap(); |
| |
| private static final ConcurrentMap<String, DynamicClassLoader> pathSpecificCls = |
| new MapMaker().concurrencyLevel(3).weakValues().makeMap(); |
| |
| private PName tenantId; |
| private String functionClassName; |
| private String jarPath; |
| private ScalarFunction udfFunction; |
| |
| public UDFExpression() { |
| } |
| |
| public UDFExpression(List<Expression> children,PFunction functionInfo) { |
| super(children); |
| this.tenantId = |
| functionInfo.getTenantId() == null ? PName.EMPTY_NAME : functionInfo.getTenantId(); |
| this.functionClassName = functionInfo.getClassName(); |
| this.jarPath = functionInfo.getJarPath(); |
| constructUDFFunction(); |
| } |
| |
| public UDFExpression(List<Expression> children, PName tenantId, String functionClassName, |
| String jarPath, ScalarFunction udfFunction) { |
| super(children); |
| this.tenantId = tenantId; |
| this.functionClassName = functionClassName; |
| this.jarPath = jarPath; |
| if(udfFunction != null) { |
| this.udfFunction = udfFunction; |
| } else { |
| constructUDFFunction(); |
| } |
| } |
| |
| @Override |
| public boolean evaluate(Tuple tuple, ImmutableBytesWritable ptr) { |
| return udfFunction.evaluate(tuple, ptr); |
| } |
| |
| @Override |
| public <T> T accept(ExpressionVisitor<T> visitor) { |
| return udfFunction.accept(visitor); |
| } |
| |
| @Override |
| public PDataType getDataType() { |
| return udfFunction.getDataType(); |
| } |
| |
| @Override |
| public String getName() { |
| return udfFunction.getName(); |
| } |
| |
| @Override |
| public OrderPreserving preservesOrder() { |
| return udfFunction.preservesOrder(); |
| } |
| |
| @Override |
| public KeyPart newKeyPart(KeyPart childPart) { |
| return udfFunction.newKeyPart(childPart); |
| } |
| |
| @Override |
| public int getKeyFormationTraversalIndex() { |
| return udfFunction.getKeyFormationTraversalIndex(); |
| } |
| |
| public PName getTenantId() { |
| return tenantId; |
| } |
| |
| public String getFunctionClassName() { |
| return functionClassName; |
| } |
| |
| public String getJarPath() { |
| return jarPath; |
| } |
| |
| public ScalarFunction getUdfFunction() { |
| return udfFunction; |
| } |
| |
| @Override |
| public void write(DataOutput output) throws IOException { |
| super.write(output); |
| WritableUtils.writeString(output, tenantId.getString()); |
| WritableUtils.writeString(output, this.functionClassName); |
| if(this.jarPath == null) { |
| WritableUtils.writeString(output, ""); |
| } else { |
| WritableUtils.writeString(output, this.jarPath); |
| } |
| } |
| |
| @Override |
| public void readFields(DataInput input) throws IOException { |
| super.readFields(input); |
| this.tenantId = PNameFactory.newName(WritableUtils.readString(input)); |
| this.functionClassName = WritableUtils.readString(input); |
| String str = WritableUtils.readString(input); |
| this.jarPath = str.length() == 0 ? null: str; |
| constructUDFFunction(); |
| } |
| |
| private void constructUDFFunction() { |
| try { |
| DynamicClassLoader classLoader = getClassLoader(this.tenantId, this.jarPath); |
| Class<?> clazz = classLoader.loadClass(this.functionClassName); |
| Constructor<?> constructor = clazz.getConstructor(List.class); |
| udfFunction = (ScalarFunction)constructor.newInstance(this.children); |
| } catch (ClassNotFoundException | NoSuchMethodException | SecurityException |
| | InstantiationException | IllegalAccessException | IllegalArgumentException |
| | InvocationTargetException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| public static DynamicClassLoader getClassLoader(final PName tenantId, final String jarPath) { |
| DynamicClassLoader cl = tenantIdSpecificCls.get(tenantId); |
| String parent = null; |
| if (cl != null) return cl; |
| if(jarPath != null && !jarPath.isEmpty()) { |
| cl = pathSpecificCls.get(jarPath); |
| if (cl != null) return cl; |
| Path path = new Path(jarPath); |
| if(jarPath.endsWith(".jar")) { |
| parent = path.getParent().toString(); |
| } else { |
| parent = path.toString(); |
| } |
| } |
| if (jarPath == null || jarPath.isEmpty() || config.get(DYNAMIC_JARS_DIR_KEY) != null |
| && (parent != null && parent.equals(config.get(DYNAMIC_JARS_DIR_KEY)))) { |
| cl = tenantIdSpecificCls.get(tenantId); |
| if (cl == null) { |
| cl = new DynamicClassLoader(config, UDFExpression.class.getClassLoader()); |
| } |
| // Cache class loader as a weak value, will be GC'ed when no reference left |
| DynamicClassLoader prev = tenantIdSpecificCls.putIfAbsent(tenantId, cl); |
| if (prev != null) { |
| cl = prev; |
| } |
| return cl; |
| } else { |
| cl = pathSpecificCls.get(jarPath); |
| if (cl == null) { |
| Configuration conf = HBaseConfiguration.create(config); |
| conf.set(DYNAMIC_JARS_DIR_KEY, parent); |
| cl = new DynamicClassLoader(conf, UDFExpression.class.getClassLoader()); |
| } |
| // Cache class loader as a weak value, will be GC'ed when no reference left |
| DynamicClassLoader prev = pathSpecificCls.putIfAbsent(jarPath, cl); |
| if (prev != null) { |
| cl = prev; |
| } |
| return cl; |
| } |
| } |
| |
| @VisibleForTesting |
| public static void setConfig(Configuration conf) { |
| config = conf; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) |
| return true; |
| if (!(obj instanceof UDFExpression)) { |
| return false; |
| } |
| UDFExpression that = (UDFExpression) obj; |
| if (!this.udfFunction.getName().equals(that.udfFunction.getName())) { |
| return false; |
| } |
| if (!this.udfFunction.getChildren().equals( |
| that.udfFunction.getChildren())) { |
| return false; |
| } |
| if (!functionClassName.equals(that.functionClassName)) { |
| return false; |
| } |
| if (!jarPath.equals(that.jarPath)) { |
| return false; |
| } |
| return true; |
| } |
| } |