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Posted to commits@camel.apache.org by gn...@apache.org on 2018/10/16 14:54:29 UTC

[camel] branch master updated: [CAMEL-12886] Various asynchronous engine issues

This is an automated email from the ASF dual-hosted git repository.

gnodet pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/camel.git


The following commit(s) were added to refs/heads/master by this push:
     new ef2075b  [CAMEL-12886] Various asynchronous engine issues
ef2075b is described below

commit ef2075bea278a152c83aab5c198dd4344a5b5824
Author: Guillaume Nodet <gn...@gmail.com>
AuthorDate: Tue Oct 16 14:59:17 2018 +0200

    [CAMEL-12886] Various asynchronous engine issues
---
 .../camel/impl/SubscribeMethodProcessor.java       |  3 +-
 .../org/apache/camel/processor/LoopProcessor.java  |  2 +-
 .../apache/camel/processor/MulticastProcessor.java |  5 +-
 .../org/apache/camel/processor/RoutingSlip.java    |  2 +-
 .../loadbalancer/FailOverLoadBalancer.java         |  1 +
 .../apache/camel/processor/AsyncLoopCopyTest.java  |  4 +-
 .../apache/camel/processor/LoopAsyncCopyTest.java  | 58 ++++++++++++++++++++++
 .../camel/processor/LoopAsyncNoCopyTest.java       | 58 ++++++++++++++++++++++
 8 files changed, 124 insertions(+), 9 deletions(-)

diff --git a/camel-core/src/main/java/org/apache/camel/impl/SubscribeMethodProcessor.java b/camel-core/src/main/java/org/apache/camel/impl/SubscribeMethodProcessor.java
index bf39a7e..43acdd9 100644
--- a/camel-core/src/main/java/org/apache/camel/impl/SubscribeMethodProcessor.java
+++ b/camel-core/src/main/java/org/apache/camel/impl/SubscribeMethodProcessor.java
@@ -88,9 +88,8 @@ public final class SubscribeMethodProcessor extends ServiceSupport implements As
             }
         } catch (Throwable e) {
             exchange.setException(e);
-            return true;
         }
-
+        callback.done(true);
         return true;
     }
 
diff --git a/camel-core/src/main/java/org/apache/camel/processor/LoopProcessor.java b/camel-core/src/main/java/org/apache/camel/processor/LoopProcessor.java
index 07bb255..9da438c 100644
--- a/camel-core/src/main/java/org/apache/camel/processor/LoopProcessor.java
+++ b/camel-core/src/main/java/org/apache/camel/processor/LoopProcessor.java
@@ -172,7 +172,7 @@ public class LoopProcessor extends DelegateAsyncProcessor implements Traceable,
                 }
 
                 // we are done so prepare the result
-                ExchangeHelper.copyResults(exchange, target);
+                ExchangeHelper.copyResults(original, target);
                 LOG.trace("Processing complete for exchangeId: {} >>> {}", exchange.getExchangeId(), exchange);
                 callback.done(false);
             }
diff --git a/camel-core/src/main/java/org/apache/camel/processor/MulticastProcessor.java b/camel-core/src/main/java/org/apache/camel/processor/MulticastProcessor.java
index 98f8abc..b0d6e32 100644
--- a/camel-core/src/main/java/org/apache/camel/processor/MulticastProcessor.java
+++ b/camel-core/src/main/java/org/apache/camel/processor/MulticastProcessor.java
@@ -758,10 +758,9 @@ public class MulticastProcessor extends ServiceSupport implements AsyncProcessor
                             doAggregate(getAggregationStrategy(subExchange), result, subExchange);
                         }
                     } catch (Throwable e) {
-                        // wrap in exception to explain where it failed
-                        subExchange.setException(new CamelExchangeException("Sequential processing failed for number " + total, subExchange, e));
+                        original.setException(e);
                         // and do the done work
-                        doDone(original, subExchange, pairs, callback, false, true);
+                        doDone(original, null, pairs, callback, false, true);
                         return;
                     }
 
diff --git a/camel-core/src/main/java/org/apache/camel/processor/RoutingSlip.java b/camel-core/src/main/java/org/apache/camel/processor/RoutingSlip.java
index dbfb8ad..7358d6a 100644
--- a/camel-core/src/main/java/org/apache/camel/processor/RoutingSlip.java
+++ b/camel-core/src/main/java/org/apache/camel/processor/RoutingSlip.java
@@ -408,7 +408,7 @@ public class RoutingSlip extends ServiceSupport implements AsyncProcessor, Trace
                                     }
                                 } catch (Exception e) {
                                     // error resolving endpoint so we should break out
-                                    exchange.setException(e);
+                                    current.setException(e);
                                     break;
                                 }
 
diff --git a/camel-core/src/main/java/org/apache/camel/processor/loadbalancer/FailOverLoadBalancer.java b/camel-core/src/main/java/org/apache/camel/processor/loadbalancer/FailOverLoadBalancer.java
index d02df0e..d0d37d3 100644
--- a/camel-core/src/main/java/org/apache/camel/processor/loadbalancer/FailOverLoadBalancer.java
+++ b/camel-core/src/main/java/org/apache/camel/processor/loadbalancer/FailOverLoadBalancer.java
@@ -315,6 +315,7 @@ public class FailOverLoadBalancer extends LoadBalancerSupport implements Traceab
                     }
                     // we cannot process so invoke callback
                     callback.done(false);
+                    return;
                 }
 
                 attempts.incrementAndGet();
diff --git a/camel-core/src/test/java/org/apache/camel/processor/AsyncLoopCopyTest.java b/camel-core/src/test/java/org/apache/camel/processor/AsyncLoopCopyTest.java
index cee8b7d..7013dbd 100644
--- a/camel-core/src/test/java/org/apache/camel/processor/AsyncLoopCopyTest.java
+++ b/camel-core/src/test/java/org/apache/camel/processor/AsyncLoopCopyTest.java
@@ -36,10 +36,10 @@ public class AsyncLoopCopyTest extends ContextTestSupport {
         getMockEndpoint("mock:before").expectedBodiesReceived("Hello Camel");
         getMockEndpoint("mock:loopIterationStart").expectedBodiesReceived("Hello Camel", "Hello Camel");
         getMockEndpoint("mock:loopIterationEnd").expectedBodiesReceived("Bye Camel", "Bye Camel");
-        getMockEndpoint("mock:result").expectedBodiesReceived("Hello Camel");
+        getMockEndpoint("mock:result").expectedBodiesReceived("Bye Camel");
 
         String reply = template.requestBodyAndHeader("direct:start", "Hello Camel", "NumberIterations", 2, String.class);
-        assertEquals("Hello Camel", reply);
+        assertEquals("Bye Camel", reply);
 
         assertMockEndpointsSatisfied();
 
diff --git a/camel-core/src/test/java/org/apache/camel/processor/LoopAsyncCopyTest.java b/camel-core/src/test/java/org/apache/camel/processor/LoopAsyncCopyTest.java
new file mode 100644
index 0000000..7e1a838
--- /dev/null
+++ b/camel-core/src/test/java/org/apache/camel/processor/LoopAsyncCopyTest.java
@@ -0,0 +1,58 @@
+/**
+ * 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.camel.processor;
+
+import org.apache.camel.ContextTestSupport;
+import org.apache.camel.builder.RouteBuilder;
+import org.junit.Test;
+
+/**
+ * @version 
+ */
+public class LoopAsyncCopyTest extends ContextTestSupport {
+
+    @Test
+    public void testLoopCopy() throws Exception {
+        getMockEndpoint("mock:loop").expectedBodiesReceived("AB", "AB", "AB");
+        getMockEndpoint("mock:result").expectedBodiesReceived("AB");
+
+        template.sendBody("direct:start", "A");
+
+        assertMockEndpointsSatisfied();
+    }
+
+    @Override
+    protected RouteBuilder createRouteBuilder() throws Exception {
+        return new RouteBuilder() {
+            @Override
+            public void configure() throws Exception {
+                // START SNIPPET: e1
+                from("direct:start")
+                    // instruct loop to use copy mode, which mean it will use a copy of the input exchange
+                    // for each loop iteration, instead of keep using the same exchange all over
+                    .loop(3).copy()
+                        .threads(1)
+                            .transform(body().append("B"))
+                        .end()
+                        .to("mock:loop")
+                    .end()
+                    .to("mock:result");
+                // END SNIPPET: e1
+            }
+        };
+    }
+}
diff --git a/camel-core/src/test/java/org/apache/camel/processor/LoopAsyncNoCopyTest.java b/camel-core/src/test/java/org/apache/camel/processor/LoopAsyncNoCopyTest.java
new file mode 100644
index 0000000..381a564
--- /dev/null
+++ b/camel-core/src/test/java/org/apache/camel/processor/LoopAsyncNoCopyTest.java
@@ -0,0 +1,58 @@
+/**
+ * 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.camel.processor;
+
+import org.apache.camel.ContextTestSupport;
+import org.apache.camel.builder.RouteBuilder;
+import org.junit.Test;
+
+/**
+ * @version 
+ */
+public class LoopAsyncNoCopyTest extends ContextTestSupport {
+
+    @Test
+    public void testLoopNoCopy() throws Exception {
+        getMockEndpoint("mock:loop").expectedBodiesReceived("AB", "ABB", "ABBB");
+        getMockEndpoint("mock:result").expectedBodiesReceived("ABBB");
+
+        template.sendBody("direct:start", "A");
+
+        assertMockEndpointsSatisfied();
+    }
+
+    @Override
+    protected RouteBuilder createRouteBuilder() throws Exception {
+        return new RouteBuilder() {
+            @Override
+            public void configure() throws Exception {
+                // START SNIPPET: e1
+                from("direct:start")
+                    // by default loop will keep using the same exchange so on the 2nd and 3rd iteration its
+                    // the same exchange that was previous used that are being looped all over
+                    .loop(3)
+                        .threads(1)
+                            .transform(body().append("B"))
+                        .end()
+                        .to("mock:loop")
+                    .end()
+                    .to("mock:result");
+                // END SNIPPET: e1
+            }
+        };
+    }
+}