Hi Standa,
On Aug 2, 2013, at 5:38 AM, Standa Mitrega <[email protected]> wrote:
> Hi
>
> I'm trying to control message properties in messages processed by Apache
> Synapse server from script executed in script mediator.
>
> Using properties it is possible to set property for 4 different scopes:
> <property name="MsgPropertyDef" value="28" scope="default" type="INTEGER"/>
> <property name="MsgPropertyTran" value="28" scope="transport" type="INTEGER"/>
> <property name="MsgPropertyAx" value="28" scope="axis2" type="INTEGER"/>
> <property name="MsgPropertyAxCl" value="28" scope="axis2-client"
> type="INTEGER"/>
>
>
> When using script mediator with groovy script:
> """
> import org.apache.synapse.MessageContext;
> import java.io.File;
> import java.util.Map;
> def test1(MessageContext mc) {
> File f
> f = new File("/tmp/out.log")
>
> Map<String,Object> ce = mc.getContextEntries()
>
> Set sp = mc.getPropertyKeySet()
> f << "PropertyKeySet size: " + sp.size() + "\n"
> sp.each() { key -> f << "${key} == " + mc.getProperty(key).toString() +
> "\n" }
> }
> """
>
> I am able to get to property set by:
> <property name="MsgPropertyDef" value="28" scope="default" type="INTEGER"/>
> But I am not able to get to properties defined in other scopes - Axis2, Axis2
> - client, Transport.
>
> Question:
> Is it possible from scipt mediator get to properties in scope transport /
> axis2 / axis2-client?
>
>
>
> What I found:
> In
> 'http://www.docjar.org/html/api/org/apache/synapse/mediators/builtin/PropertyMediator.java.html'
> there is following code:
> 87 if (scope == null ||
> XMLConfigConstants.SCOPE_DEFAULT.equals(scope)) {
> 88 //Setting property into the Synapse Context
> 89 synCtx.setProperty(name, resultValue);
> 90
> 91 } else if (XMLConfigConstants.SCOPE_AXIS2.equals(scope)
> 92 && synCtx instanceof Axis2MessageContext) {
> 93 //Setting property into the Axis2 Message Context
> 94 Axis2MessageContext axis2smc = (Axis2MessageContext)
> synCtx;
> 95 org.apache.axis2.context.MessageContext axis2MessageCtx =
> 96 axis2smc.getAxis2MessageContext();
> 97 axis2MessageCtx.setProperty(name, resultValue);
> 98
> 99 } else if (XMLConfigConstants.SCOPE_CLIENT.equals(scope)
> 100 && synCtx instanceof Axis2MessageContext) {
> 101 //Setting property into the Axis2 Message Context
> client options
> 102 Axis2MessageContext axis2smc = (Axis2MessageContext)
> synCtx;
> 103 org.apache.axis2.context.MessageContext axis2MessageCtx =
> 104 axis2smc.getAxis2MessageContext();
> 105 axis2MessageCtx.getOptions().setProperty(name, resultValue);
> 106
> 107 } else if (XMLConfigConstants.SCOPE_TRANSPORT.equals(scope)
> 108 && synCtx instanceof Axis2MessageContext) {
> 109 //Setting Transport Headers
> 110 Axis2MessageContext axis2smc = (Axis2MessageContext)
> synCtx;
> 111 org.apache.axis2.context.MessageContext axis2MessageCtx =
> 112 axis2smc.getAxis2MessageContext();
> 113 Object headers = axis2MessageCtx.getProperty(
> 114 org.apache.axis2.context.MessageContext.TRANSPORT_HEADERS);
> 115
> 116 if (headers != null && headers instanceof Map) {
> 117 Map headersMap = (HashMap) headers;
> 118 headersMap.put(name, resultValue);
> 119 }
> 120 if (headers == null) {
> 121 Map headersMap = new HashMap();
> 122 headersMap.put(name, resultValue);
> 123 axis2MessageCtx.setProperty(
> 124 org.apache.axis2.context.MessageContext.TRANSPORT_HEADERS,
> 125 headersMap);
> 126 }
> 127 }
>
>
> IMO in the code I can see how one can get to various scopes - SCOPE_DEFAULT,
> SCOPE_AXIS2, SCOPE_CLIENT, SCOPE_TRANSPORT. BUT:
> 1. default scope:
> 89 synCtx.setProperty(name, resultValue);
> synCtx is instance of: org.apache.synapse.MessageContext;
> 2. other scopes:
> for all other scopes 'synCtx' must be instance of
> org.apache.synapse.core.axis2.Axis2MessageContext.
> BUT in script mediator (see sample at the top) 'mc' is instance of
> org.apache.synapse.MessageContext. But it is not an instance of
> org.apache.synapse.core.axis2.Axis2MessageContext. It is instance of
> org.apache.synapse.mediators.bsf.ScriptMessageContext so there is not
> available IMHO key method 'axis2smc.getAxis2MessageContext()'.
> Is it possible to get to 'axis2smc.getAxis2MessageContext()' different way in
> script mediator?
Your analysis correct. It looks like only the properties set in the default
context can be manipulated using the script mediator. If it's a requirement to
access other scopes from the script mediator, we can certainly include that in
the next release. You can report an issue for this at
https://issues.apache.org/jira/browse/SYNAPSE
Thanks,
Hiranya
>
> Best regards
> Standa
>
--
Hiranya Jayathilaka
Mayhem Lab/RACE Lab;
Dept. of Computer Science, UCSB; http://cs.ucsb.edu
E-mail: [email protected]; Mobile: +1 (805) 895-7443
Blog: http://techfeast-hiranya.blogspot.com
