Initialize Inline Fault Sequences for Proxy Targets
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Key: SYNAPSE-437
URL: https://issues.apache.org/jira/browse/SYNAPSE-437
Project: Synapse
Issue Type: Bug
Components: Core, Proxy Services
Reporter: Lucas Moten
Priority: Minor
Attachments: SynapseConfiguration_Init_TargetInlineFaultSequence.txt
When synapse is initialized, target inline in and out sequences are initialized
for proxies. Inline fault sequences that contain mediators requiring
initialization will fail with a null pointer exception because they are not
initialized.
The inline fault sequences appear to be initialized only from the ProxyService
start method. This is turn does not appear to be called by synapse core, but
is utilized by a separate, but related project, WSO2 ESB admin interface in the
ProxyServiceAdmin class (startProxyService and saveProxyService). When synapse
core is started, all proxies are running by default, initialized via
SynapseConfiguration. Those proxies that are explicitly configured with
startOnLoad attribute set to false are then stopped.
Workaround: Use named sequences for proxies which are initialized when synapse
is started. Named sequences are initialized independently of proxy targets
from the SynapseConfiguration init method. Most samples available with synapse
make use of named sequences.
Recommended fix: Initialize target inline fault sequences for proxies in
Synapse Configuration
Index:
modules/core/src/main/java/org/apache/synapse/config/SynapseConfiguration.java
===================================================================
---
modules/core/src/main/java/org/apache/synapse/config/SynapseConfiguration.java
(revision 688865)
+++
modules/core/src/main/java/org/apache/synapse/config/SynapseConfiguration.java
(working copy)
@@ -825,6 +825,10 @@
if (p.getTargetInLineOutSequence() != null) {
p.getTargetInLineOutSequence().init(se);
}
+
+ if (p.getTargetInLineFaultSequence() != null) {
+ p.getTargetInLineFaultSequence().init(se);
+ }
}
// initialize managed mediators
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