001/*
002 * (C) Copyright 2006-2014 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     bstefanescu
018 *     Vladimir Pasquier <vpasquier@nuxeo.com>
019 */
020package org.nuxeo.ecm.automation.core.operations.execution;
021
022import org.nuxeo.ecm.automation.AutomationService;
023import org.nuxeo.ecm.automation.OperationContext;
024import org.nuxeo.ecm.automation.OperationException;
025import org.nuxeo.ecm.automation.core.Constants;
026import org.nuxeo.ecm.automation.core.annotations.Context;
027import org.nuxeo.ecm.automation.core.annotations.Operation;
028import org.nuxeo.ecm.automation.core.annotations.OperationMethod;
029import org.nuxeo.ecm.automation.core.annotations.Param;
030import org.nuxeo.ecm.automation.core.util.BlobList;
031import org.nuxeo.ecm.automation.core.util.Properties;
032import org.nuxeo.ecm.core.api.Blob;
033import org.nuxeo.ecm.core.api.CoreSession;
034import org.nuxeo.ecm.core.api.DocumentModel;
035
036import java.util.HashMap;
037import java.util.Map;
038
039/**
040 * Run an embedded operation chain that returns a Blob using the current input.
041 *
042 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a>
043 */
044@Operation(id = RunFileChain.ID, category = Constants.CAT_SUBCHAIN_EXECUTION, label = "Run File Chain", description = "Run an operation chain which is returning a file in the current context. The input for the chain to run is a file or a list of files. Return the output of the chain as a file or a list of files. The 'parameters' injected are accessible in the subcontext ChainParameters. For instance, @{ChainParameters['parameterKey']}.", aliases = { "Context.RunFileOperation" })
045public class RunFileChain {
046
047    public static final String ID = "RunFileOperation";
048
049    @Context
050    protected OperationContext ctx;
051
052    @Context
053    protected AutomationService service;
054
055    @Context
056    protected CoreSession session;
057
058    @Param(name = "id")
059    protected String chainId;
060
061    @Param(name = "isolate", required = false, values = "false")
062    protected boolean isolate = false;
063
064    @Param(name = "parameters", description = "Accessible in the subcontext ChainParameters. For instance, @{ChainParameters['parameterKey']}.", required = false)
065    protected Properties chainParameters = new Properties();
066
067    /**
068     * @since 6.0 Define if the chain in parameter should be executed in new transaction.
069     */
070    @Param(name = "newTx", required = false, values = "false", description = "Define if the chain in parameter should be executed in new transaction.")
071    protected boolean newTx = false;
072
073    /**
074     * @since 6.0 Define transaction timeout (default to 60 sec).
075     */
076    @Param(name = "timeout", required = false, description = "Define transaction timeout (default to 60 sec).")
077    protected Integer timeout = 60;
078
079    /**
080     * @since 6.0 Define if transaction should rollback or not (default to true).
081     */
082    @Param(name = "rollbackGlobalOnError", required = false, values = "true", description = "Define if transaction should rollback or not (default to true)")
083    protected boolean rollbackGlobalOnError = true;
084
085    @OperationMethod
086    public Blob run(Blob blob) throws OperationException {
087        // Handle isolation option
088        Map<String, Object> vars = isolate ? new HashMap<>(ctx.getVars()) : ctx.getVars();
089        try (OperationContext subctx = ctx.getSubContext(isolate, blob)) {
090
091            // Running chain/operation
092            Blob result = null;
093            if (newTx) {
094                result = (Blob) service.runInNewTx(subctx, chainId, chainParameters, timeout, rollbackGlobalOnError);
095            } else {
096                result = (Blob) service.run(subctx, chainId, chainParameters);
097            }
098
099            // reconnect documents in the context
100            if (!isolate) {
101                for (String varName : vars.keySet()) {
102                    if (!ctx.getVars().containsKey(varName)) {
103                        ctx.put(varName, vars.get(varName));
104                    } else {
105                        Object value = vars.get(varName);
106                        if (session != null && value != null && value instanceof DocumentModel) {
107                            ctx.getVars().put(varName, session.getDocument(((DocumentModel) value).getRef()));
108                        } else {
109                            ctx.getVars().put(varName, value);
110                        }
111                    }
112                }
113            }
114            return result;
115        }
116    }
117
118    @OperationMethod
119    public BlobList run(BlobList blobs) throws OperationException {
120        BlobList result = new BlobList(blobs.size());
121        for (Blob blob : blobs) {
122            result.add(run(blob));
123        }
124        return result;
125    }
126
127}