| /* |
| * 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.batchee.jaxrs.client; |
| |
| import org.apache.batchee.jaxrs.client.impl.JobExecutionImpl; |
| import org.apache.batchee.jaxrs.client.impl.JobInstanceImpl; |
| import org.apache.batchee.jaxrs.client.impl.MetricImpl; |
| import org.apache.batchee.jaxrs.client.impl.StepExecutionImpl; |
| import org.apache.batchee.jaxrs.common.JBatchResource; |
| import org.apache.batchee.jaxrs.common.RestJobExecution; |
| import org.apache.batchee.jaxrs.common.RestJobInstance; |
| import org.apache.batchee.jaxrs.common.RestMetric; |
| import org.apache.batchee.jaxrs.common.RestProperties; |
| import org.apache.batchee.jaxrs.common.RestStepExecution; |
| |
| import javax.batch.runtime.JobExecution; |
| import javax.batch.runtime.JobInstance; |
| import javax.batch.runtime.Metric; |
| import javax.batch.runtime.StepExecution; |
| import java.io.Closeable; |
| import java.lang.reflect.InvocationHandler; |
| import java.lang.reflect.Method; |
| import java.lang.reflect.ParameterizedType; |
| import java.lang.reflect.Type; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Properties; |
| import java.util.Set; |
| |
| import static org.apache.batchee.jaxrs.common.RestProperties.toProperties; |
| |
| abstract class BatchEEJAXRSClientBase<RESPONSE> implements InvocationHandler { |
| private static final Map<String, Method> RESOURCE_MAPPINGS = new HashMap<String, Method>(); |
| |
| static { |
| for (final Method m : JBatchResource.class.getMethods()) { |
| if (!Object.class.equals(m.getDeclaringClass())) { |
| RESOURCE_MAPPINGS.put(m.getName(), m); |
| } |
| } |
| } |
| |
| protected abstract Object extractEntity(RESPONSE response, Type genericReturnType) throws Throwable; |
| protected abstract RESPONSE doInvoke(Method jaxrsMethod, Method method, Object[] args) throws Throwable; |
| protected abstract void close(); |
| |
| @Override |
| public Object invoke(final Object proxy, final Method method, final Object[] args) throws Throwable { |
| if (Closeable.class.equals(method.getDeclaringClass())) { |
| close(); |
| } |
| |
| final Method jaxrsMethod = RESOURCE_MAPPINGS.get(method.getName()); |
| if (jaxrsMethod == null) { |
| throw new IllegalArgumentException("Can't find mapping for " + method); |
| } |
| |
| final RESPONSE response = doInvoke(jaxrsMethod, method, args); |
| return convertReturnedValue(extractEntity(response, jaxrsMethod.getGenericReturnType()), method.getGenericReturnType()); |
| } |
| |
| protected static Object convertParam(final Object arg, final Type type) { |
| if (arg == null) { |
| return null; |
| } |
| |
| // simple types are mapped 1-1 between JobOperator and JBatchResource |
| if (String.class.equals(type) || int.class.equals(type) || long.class.equals(type)) { |
| return arg; |
| } |
| |
| if (Properties.class.equals(type)) { |
| final Properties props = Properties.class.cast(arg); |
| return RestProperties.wrap(props); |
| } |
| if (JobInstance.class.equals(type)) { |
| final JobInstance instance = JobInstance.class.cast(arg); |
| return new RestJobInstance(instance.getJobName(), instance.getInstanceId()); |
| } |
| |
| throw new IllegalArgumentException("Unexpected type " + type + " for a parameter"); |
| } |
| |
| protected static Object convertReturnedValue(final Object arg, final Type type) { |
| if (arg == null || void.class.equals(type)) { |
| return null; |
| } |
| |
| // simple types are mapped 1-1 between JobOperator and JBatchResource |
| if (String.class.equals(type) || int.class.equals(type) || long.class.equals(type)) { |
| return arg; |
| } |
| |
| if (Properties.class.equals(type)) { |
| final RestProperties props = RestProperties.class.cast(arg); |
| return toProperties(props); |
| } |
| if (JobInstance.class.equals(type)) { |
| final RestJobInstance rij = RestJobInstance.class.cast(arg); |
| return new JobInstanceImpl(rij.getName(), rij.getId()); |
| } |
| if (JobExecution.class.equals(type)) { |
| final RestJobExecution jobExec = RestJobExecution.class.cast(arg); |
| return new JobExecutionImpl( |
| jobExec.getId(), |
| jobExec.getName(), |
| toProperties(jobExec.getJobParameters()), |
| jobExec.getBatchStatus(), |
| jobExec.getExitStatus(), |
| jobExec.getCreateTime(), |
| jobExec.getStartTime(), |
| jobExec.getEndTime(), |
| jobExec.getLastUpdatedTime() |
| ); |
| } |
| if (ParameterizedType.class.isInstance(type)) { |
| final ParameterizedType pt = ParameterizedType.class.cast(type); |
| if (Set.class.equals(pt.getRawType())) { |
| if (String.class.equals(pt.getActualTypeArguments()[0])) { |
| final String[] names = String[].class.cast(arg); |
| final Set<String> converted = new HashSet<String>(names.length); |
| Collections.addAll(converted, names); |
| return converted; |
| } |
| } |
| if (List.class.equals(pt.getRawType())) { |
| if (JobInstance.class.equals(pt.getActualTypeArguments()[0])) { |
| final RestJobInstance[] instances = RestJobInstance[].class.cast(arg); |
| final List<JobInstance> converted = new ArrayList<JobInstance>(instances.length); |
| for (final RestJobInstance rij : instances) { |
| converted.add(new JobInstanceImpl(rij.getName(), rij.getId())); |
| } |
| return converted; |
| } |
| if (Long.class.equals(pt.getActualTypeArguments()[0])) { |
| final Long[] ids = Long[].class.cast(arg); |
| final List<Long> converted = new ArrayList<Long>(ids.length); |
| Collections.addAll(converted, ids); |
| return converted; |
| } |
| if (JobExecution.class.equals(pt.getActualTypeArguments()[0])) { |
| final RestJobExecution[] executions = RestJobExecution[].class.cast(arg); |
| final List<JobExecution> converted = new ArrayList<JobExecution>(executions.length); |
| for (final RestJobExecution exec : executions) { |
| converted.add(new JobExecutionImpl( |
| exec.getId(), |
| exec.getName(), |
| toProperties(exec.getJobParameters()), |
| exec.getBatchStatus(), |
| exec.getExitStatus(), |
| exec.getCreateTime(), |
| exec.getStartTime(), |
| exec.getEndTime(), |
| exec.getLastUpdatedTime() |
| )); |
| } |
| return converted; |
| } |
| if (StepExecution.class.equals(pt.getActualTypeArguments()[0])) { |
| final RestStepExecution[] executions = RestStepExecution[].class.cast(arg); |
| final List<StepExecution> converted = new ArrayList<StepExecution>(executions.length); |
| for (final RestStepExecution exec : executions) { |
| converted.add(new StepExecutionImpl( |
| exec.getId(), |
| exec.getName(), |
| exec.getBatchStatus(), |
| exec.getExitStatus(), |
| exec.getStartTime(), |
| exec.getEndTime(), |
| null, |
| toMetrics(exec.getMetrics()) |
| )); |
| } |
| return converted; |
| } |
| } |
| } |
| |
| throw new IllegalArgumentException("Unexpected type " + type + " for a returned type"); |
| } |
| |
| private static Metric[] toMetrics(final List<RestMetric> metrics) { |
| if (metrics == null) { |
| return null; |
| } |
| final Metric[] array = new Metric[metrics.size()]; |
| int i = 0; |
| for (final RestMetric m : metrics) { |
| array[i++] = new MetricImpl(m.getType(), m.getValue()); |
| } |
| return array; |
| } |
| } |