From 200a40b332420f94992eb39a6d0ea1cf1490ffc4 Mon Sep 17 00:00:00 2001 From: coreyg Date: Fri, 21 Nov 2014 09:30:19 +0000 Subject: Adding tuscany's website to their svn repo for svnpubsub git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1640879 13f79535-47bb-0310-9956-ffa450edef68 --- site/trunk/site-publish/federation-notes.html | 267 ++++++++++++++++++++++++++ 1 file changed, 267 insertions(+) create mode 100644 site/trunk/site-publish/federation-notes.html (limited to 'site/trunk/site-publish/federation-notes.html') diff --git a/site/trunk/site-publish/federation-notes.html b/site/trunk/site-publish/federation-notes.html new file mode 100644 index 0000000000..2facc1f947 --- /dev/null +++ b/site/trunk/site-publish/federation-notes.html @@ -0,0 +1,267 @@ + + + + + + + + + + + + + + + Apache Tuscany : Federation Notes + + + + + + + + + + + + + + + +
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+ + + + + + + + + +
+  Apache Tuscany > Home > SCA Overview > SCA Java > SCA Java Work-In-Progress > Federation Notes + + User List | Dev List | Issue Tracker   +
+ + + + + + + +
+ + +
+ +
+
+

Pulling together notes on what has been build to support federation in the tunk as it stands (just after TSS demo - March 07)

+ +

References

+ +

Raymond's architecture guide http://cwiki.apache.org/confluence/display/TUSCANY/Tuscany+Architecture+Guide
+Some discussions from the dev list about contributio, discovery, federation and the TSS demo:

+ + + +

Building The Demo

+ +

From The TSS Tag

+ +

Follow instructions in README.txt here http://svn.apache.org/repos/asf/incubator/tuscany/java/distribution/sca/tsss-demo/
+Unzip the resulting demo zip file
+Meeraj's discussion of switching from JXTA to JSM http://www.mail-archive.com/tuscany-dev@ws.apache.org/msg15731.html
+I had problems in that some of the required dependency JARs were missing. I copied:

+
    +
  • tuscany-jms-discovery-0.1-incubating-SNAPSHOT.jar
    • +
  • apache-activemq-4.1.0-incubator.jar
    • +
  • tuscany-http-jetty-0.1-incubating-SNAPSHOT.jar
    • +
  • jetty-6.1.0.jar
    • +
  • jetty-util-6.1.0.jar
    • +
  • tuscany-sca-console-0.1-incubating-SNAPSHOT.jar
    • +
  • geronimo-j2ee-connector_1.5_spec-1.0.jar
    • +
+ + +

into each of the profiles boot directories

+ +

Manually From Head

+

I couldn't get this to work as the core tests now fail

+ +

Debugging The Demo

+

When run originally the demo complained about missing dependencies. In particular when reading the system components (root.system) I got the error:

+ +

org.apache.tuscany.host.runtime.InitializationException: org.apache.tuscany.spi.
+component.GroupInitializationException: sca://root.system/main
+ at org.apache.tuscany.core.runtime.AbstractRuntime.initialize(AbstractRu
+ntime.java)
+ at org.apache.tuscany.standalone.server.TuscanyServer.startRuntime(Tusca
+nyServer.java:134)

+ +

What this actually means is that Tuscany failed to load one of the system components successfully but, by default, doesn't tell what the issue is. I wanted to use Eclipse to debug it so I played about a bit but couldn't get the java -jar command line to come up in the Eclipse debugger. As a fall back I started a remote debugging session. There were three steps to this.

+ +

Add a trap to the code to give me a chance to attach the debugger. I added the following lines to the mainline of the:

+
+
+ System.out.println("press a key");
+ java.io.BufferedReader stdin = new java.io.BufferedReader(new java.io.InputStreamReader(System.in));
+ String line = stdin.readLine();
+
+
+ +

Start java app with remote debugging enabled. There are plenty of references on the web on how to do this. Here is the comman line I used to start the master profile.

+
+
+java -Xrunjdwp:server=y,transport=dt_socket,address=4142,suspend=n -Dtuscany.adminPort=2000 -jar server.start.jar ma
+ster
+
+
+ +

When the app comes up and stops at the trap connect the Eclipse debugger by selecting the remote debugging profile and specifying localhost:4142 as the connection details. The port number (4142) just comes from that specified on the application command line.

+ +

Turning Logging On

+

Its not clear how to do this just yet. Meeraj suggests that the missing nested exception detail can be printed out by specifying a log formatter. TODO.

+ +

Running The Demo

+ +

(From Meeraj's post on the subject)
+This is how you start the servers (Please make sure you start ActiveMQ
+before you start the servers) .

+ +

Master: java -Dtuscany.adminPort=2000 -jar server.start.jar master
+Slave1: java -Dtuscany.adminPort=3000 -jar server.start.jar slave1
+Slave2: java -Dtuscany.adminPort=4000 -jar server.start.jar slave2

+ +

You can access the admin console from http://localhost:7000/scdlForm and
+if you target the deployed SCDL to slave1, access the demo appilcation
+from http://localhsot:8000/calculatorForm. The test scdl is as follows
+(this is what you submit from the admin console to target a deployment
+to a slave),

+ +
+
+<composite xmlns="http://www.osoa.org/xmlns/sca/1.0"
+          xmlns:tuscany="http://tuscany.apache.org/xmlns/sca/2.0-alpha"
+          name="CalculatorComposite">
+
+   <component runtimeId="slave1" name="CalculatorServiceComponent">
+       <implementation.java class="calculator.CalculatorServiceImpl"/>
+       <reference name="addService" target="AddServiceComponent"/>
+       <reference name="subtractService"
+target="SubtractServiceComponent"/>
+       <reference name="multiplyService"
+target="MultiplyServiceComponent"/>
+       <reference name="divideService"
+target="DivideServiceComponent"/>
+   </component>
+
+   <component runtimeId="slave1" name="AddServiceComponent">
+       <implementation.java class="calculator.AddServiceImpl"/>
+   </component>
+
+   <component runtimeId="slave1" name="SubtractServiceComponent">
+       <implementation.java class="calculator.SubtractServiceImpl"/>
+   </component>
+
+   <component runtimeId="slave1" name="MultiplyServiceComponent">
+       <implementation.java class="calculator.MultiplyServiceImpl"/>
+   </component>
+
+   <component runtimeId="slave1" name="DivideServiceComponent">
+       <implementation.java class="calculator.DivideServiceImpl"/>
+   </component>
+
+</composite>
+
+
+ +

Here is the actual sequence of events:

+ +

Start ActiveMQ

+ +
+
+java -Dtuscany.adminPort=2000 -jar server.start.jar master
+java -Dtuscany.adminPort=3000 -jar server.start.jar slave1
+java -Dtuscany.adminPort=4000 -jar server.start.jar slave2
+
+
+ +

Each of these just reports "Started" on the command line

+ +

Go to http://localhost:7000/scdlForm in a browser and paste in the SCDL from above to configure slave1 to create and wire the calculator components.

+ +

Go to http://localhsot:8000/calculatorForm in a browser and see the form that drives the calculator sample. Type in a couple of numbers and press Add.

+ + +
+
+
+ + +
+ + + + + + website stats + +
+ Copyright � 2003-2012, The Apache Software Foundation  
+ Apache Tuscany and the Apache Tuscany project logo are trademarks of The Apache Software Foundation. +
+ + + + -- cgit v1.2.3