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[gpl/argeo-slc.git] / runtime / org.argeo.slc.core / src / main / java / org / argeo / slc / core / execution / DefaultExecutionFlow.java

diff --git a/runtime/org.argeo.slc.core/src/main/java/org/argeo/slc/core/execution/DefaultExecutionFlow.java b/runtime/org.argeo.slc.core/src/main/java/org/argeo/slc/core/execution/DefaultExecutionFlow.java
index 7fd07fe770ff32c1d28a94be1c21500cd067be4d..1f4601c840b361773510505362c8392647b456a7 100644 (file)
--- a/runtime/org.argeo.slc.core/src/main/java/org/argeo/slc/core/execution/DefaultExecutionFlow.java
+++ b/runtime/org.argeo.slc.core/src/main/java/org/argeo/slc/core/execution/DefaultExecutionFlow.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright (C) 2007-2012 Argeo GmbH
+ *
+ * Licensed 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.argeo.slc.core.execution;
 
 import java.util.ArrayList;
@@ -5,20 +20,21 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
 import org.argeo.slc.SlcException;
-import org.argeo.slc.core.structure.tree.TreeSPath;
-import org.argeo.slc.core.structure.tree.TreeSRegistry;
 import org.argeo.slc.execution.ExecutionFlow;
 import org.argeo.slc.execution.ExecutionSpec;
 import org.argeo.slc.execution.ExecutionSpecAttribute;
-import org.argeo.slc.structure.StructureAware;
-import org.argeo.slc.structure.StructureRegistry;
 import org.springframework.beans.factory.BeanNameAware;
 import org.springframework.beans.factory.InitializingBean;
 import org.springframework.validation.MapBindingResult;
 
+/** Default implementation of an execution flow. */
 public class DefaultExecutionFlow implements ExecutionFlow, InitializingBean,
-               BeanNameAware, StructureAware<TreeSPath> {
+               BeanNameAware {
+       private final static Log log = LogFactory
+                       .getLog(DefaultExecutionFlow.class);
 
        private final ExecutionSpec executionSpec;
        private String name = null;
@@ -26,7 +42,8 @@ public class DefaultExecutionFlow implements ExecutionFlow, InitializingBean,
        private List<Runnable> executables = new ArrayList<Runnable>();
 
        private String path;
-       private StructureRegistry<TreeSPath> registry = new TreeSRegistry();
+
+       private Boolean failOnError = true;
 
        public DefaultExecutionFlow() {
                this.executionSpec = new DefaultExecutionSpec();
@@ -60,13 +77,13 @@ public class DefaultExecutionFlow implements ExecutionFlow, InitializingBean,
                        ExecutionSpecAttribute attr = executionSpec.getAttributes()
                                        .get(key);
 
-                       if (attr.getIsParameter() && !isSetAsParameter(key)) {
-                               errors.rejectValue(key, "Parameter not set");
+                       if (attr.getIsImmutable() && !isSetAsParameter(key)) {
+                               errors.rejectValue(key, "Immutable but not set");
                                break;
                        }
 
-                       if (attr.getIsFrozen() && !isSetAsParameter(key)) {
-                               errors.rejectValue(key, "Frozen but not set as parameter");
+                       if (attr.getIsConstant() && !isSetAsParameter(key)) {
+                               errors.rejectValue(key, "Constant but not set as parameter");
                                break;
                        }
 
@@ -83,18 +100,59 @@ public class DefaultExecutionFlow implements ExecutionFlow, InitializingBean,
        }
 
        public void run() {
-               for (Runnable executable : executables) {
-                       executable.run();
+               try {
+                       for (Runnable executable : executables) {
+                               if (Thread.interrupted()) {
+                                       log.error("Flow '" + getName() + "' killed before '"
+                                                       + executable + "'");
+                                       Thread.currentThread().interrupt();
+                                       return;
+                                       // throw new ThreadDeath();
+                               }
+                               this.doExecuteRunnable(executable);
+                       }
+               } catch (RuntimeException e) {
+                       if (Thread.interrupted()) {
+                               log.error("Flow '" + getName()
+                                               + "' killed while receiving an unrelated exception", e);
+                               Thread.currentThread().interrupt();
+                               return;
+                               // throw new ThreadDeath();
+                       }
+                       if (failOnError)
+                               throw e;
+                       else {
+                               log.error("Execution flow failed,"
+                                               + " but process did not fail"
+                                               + " because failOnError property"
+                                               + " is set to false: " + e);
+                               if (log.isTraceEnabled())
+                                       e.printStackTrace();
+                       }
                }
        }
 
-       @SuppressWarnings(value = { "unchecked" })
+       public void doExecuteRunnable(Runnable runnable) {
+               runnable.run();
+       }
+
        public void afterPropertiesSet() throws Exception {
+               if (path == null) {
+                       if (name.charAt(0) == '/') {
+                               path = name.substring(0, name.lastIndexOf('/'));
+                       }
+               }
+
                if (path != null) {
                        for (Runnable executable : executables) {
-                               if (executable instanceof StructureAware) {
-                                       ((StructureAware<TreeSPath>) executable).notifyCurrentPath(
-                                                       registry, new TreeSPath(path));
+                               if (executable instanceof DefaultExecutionFlow) {
+                                       // so we don't need to have DefaultExecutionFlow
+                                       // implementing StructureAware
+                                       // FIXME: probably has side effects
+                                       DefaultExecutionFlow flow = (DefaultExecutionFlow) executable;
+                                       String newPath = path + '/' + flow.getName();
+                                       flow.setPath(newPath);
+                                       log.warn(newPath + " was forcibly set on " + flow);
                                }
                        }
                }
@@ -148,14 +206,21 @@ public class DefaultExecutionFlow implements ExecutionFlow, InitializingBean,
                                                .getAttributes().get(key).getValue() != null);
        }
 
+       @Override
        public String toString() {
-               return new StringBuffer("Flow ").append(name).toString();
+               return new StringBuffer("Execution flow ").append(name).toString();
        }
 
+       @Override
        public boolean equals(Object obj) {
                return ((ExecutionFlow) obj).getName().equals(name);
        }
 
+       @Override
+       public int hashCode() {
+               return name.hashCode();
+       }
+
        public String getPath() {
                return path;
        }
@@ -164,15 +229,12 @@ public class DefaultExecutionFlow implements ExecutionFlow, InitializingBean,
                this.path = path;
        }
 
-       public void setRegistry(StructureRegistry<TreeSPath> registry) {
-               this.registry = registry;
+       public Boolean getFailOnError() {
+               return failOnError;
        }
 
-       public void notifyCurrentPath(StructureRegistry<TreeSPath> registry,
-                       TreeSPath path) {
-               if (this.path == null) {
-                       this.path = path.toString();
-               }
+       public void setFailOnError(Boolean failOnError) {
+               this.failOnError = failOnError;
        }
 
 }