| /* |
| * 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.pig.newplan.logical.visitor; |
| |
| import java.io.IOException; |
| |
| import org.apache.hadoop.mapred.FileAlreadyExistsException; |
| import org.apache.hadoop.mapreduce.Job; |
| import org.apache.pig.OverwritableStoreFunc; |
| import org.apache.pig.PigException; |
| import org.apache.pig.ResourceSchema; |
| import org.apache.pig.StoreFuncInterface; |
| import org.apache.pig.backend.hadoop.datastorage.ConfigurationUtil; |
| import org.apache.pig.impl.PigContext; |
| import org.apache.pig.impl.logicalLayer.FrontendException; |
| import org.apache.pig.impl.plan.VisitorException; |
| import org.apache.pig.newplan.DepthFirstWalker; |
| import org.apache.pig.newplan.OperatorPlan; |
| import org.apache.pig.newplan.logical.relational.LOStore; |
| import org.apache.pig.newplan.logical.relational.LogicalRelationalNodesVisitor; |
| |
| public class InputOutputFileValidatorVisitor extends LogicalRelationalNodesVisitor { |
| private PigContext pigCtx; |
| public InputOutputFileValidatorVisitor(OperatorPlan plan, PigContext pigContext) throws FrontendException { |
| super(plan, new DepthFirstWalker(plan)); |
| pigCtx = pigContext; |
| } |
| |
| @Override |
| public void visit(LOStore store) throws FrontendException { |
| StoreFuncInterface sf = store.getStoreFunc(); |
| String outLoc = store.getOutputSpec().getFileName(); |
| int errCode = 2116; |
| String validationErrStr ="Output Location Validation Failed for: '" + outLoc ; |
| Job dummyJob; |
| |
| try { |
| if(store.getSchema() != null){ |
| sf.checkSchema(new ResourceSchema(store.getSchema(), store.getSortInfo())); |
| } |
| dummyJob = new Job(ConfigurationUtil.toConfiguration(pigCtx.getProperties())); |
| sf.setStoreLocation(outLoc, dummyJob); |
| } catch (Exception ioe) { |
| if(ioe instanceof PigException){ |
| errCode = ((PigException)ioe).getErrorCode(); |
| } |
| String exceptionMsg = ioe.getMessage(); |
| validationErrStr += (exceptionMsg == null) ? "" : " More info to follow:\n" +exceptionMsg; |
| throw new VisitorException(store, validationErrStr, errCode, pigCtx.getErrorSource(), ioe); |
| } |
| |
| validationErrStr += " More info to follow:\n"; |
| try { |
| sf.getOutputFormat().checkOutputSpecs(dummyJob); |
| } catch (IOException ioe) { |
| byte errSrc = pigCtx.getErrorSource(); |
| switch(errSrc) { |
| case PigException.BUG: |
| errCode = 2002; |
| break; |
| case PigException.REMOTE_ENVIRONMENT: |
| errCode = 6000; |
| break; |
| case PigException.USER_ENVIRONMENT: |
| errCode = 4000; |
| break; |
| } |
| |
| boolean shouldThrowException = true; |
| if (sf instanceof OverwritableStoreFunc) { |
| if (((OverwritableStoreFunc) sf).shouldOverwrite()) { |
| if (ioe instanceof FileAlreadyExistsException |
| || ioe instanceof org.apache.hadoop.fs.FileAlreadyExistsException) { |
| shouldThrowException = false; |
| } |
| } |
| } |
| if (shouldThrowException) { |
| validationErrStr += ioe.getMessage(); |
| throw new VisitorException(store, validationErrStr, |
| errCode, errSrc, ioe); |
| } |
| } catch (InterruptedException ie) { |
| validationErrStr += ie.getMessage(); |
| throw new VisitorException(store, validationErrStr, errCode, pigCtx.getErrorSource(), ie); |
| } |
| } |
| } |