Asitha’s gists

Asitha / registry-script-mediator.xml

Last active July 8, 2021 06:44

Writing to WSO2 registry through ESB script mediator. For more details https://asitha.github.io/cs/programming/gotchas/wso2/2015/09/03/save-content-into-wso2-registry-through-mediators/


	<script language="js"><![CDATA[
	importPackage(Packages.org.apache.synapse.config);
	mc.getConfiguration().getRegistry().newResource("conf:/wsdl/myWSDL",false);
	mc.getConfiguration().getRegistry().updateResource(
	"conf:/wsdl/myWSDL", mc.getProperty("MyProperty").toString());
	]]></script>

Asitha / GetLeaderHazelcastScript.xml

Last active September 7, 2015 04:26

WSO2 ESB script mediator code snippet to return whether a node is the leader node in the cluster or not


	<script language="js">
	importPackage(Packages.com.hazelcast.core);
	importPackage(Packages.java.util);

	iter = Hazelcast.getAllHazelcastInstances().iterator();
	if( iter.hasNext() ) {
	instance = iter.next();
	isLeader = instance.getCluster().getMembers().iterator().next().localMember();
	mc.setProperty("isLeader", isLeader);

Asitha / SaveInRegistry.java

Last active September 4, 2015 11:11

Java snippet to save content in WSO2 Registry using an ESB class mediator. This code shows how a value saved in message context can be easily saved to registry.


	String resourcePath = "conf:/store/myStore";
	mc.getConfiguration().getRegistry().newResource(resourcePath, false);
	mc.getConfiguration().getRegistry().updateResource(
	resourcePath, mc.getProperty("myProperty").toString().getBytes());

Asitha / GetLeaderNode.java

Created September 4, 2015 12:28

Code snippet to return the leader node in a Hazelcast cluster.


	public boolean isLeader() {

	// Get all the Hazelcast instances in the current JVM.
	// In case of carbon server this is always either one
	// or zero.
	Iterator<HazelcastInstance> iter
	= Hazelcast.getAllHazelcastInstances().iterator();

	if (iter.hasNext()) { // cluster mode

Asitha / remove-white-background.sh

Last active March 16, 2023 23:08

Remove white background of an image with linux

convert input.png -fuzz 4% -transparent white output.png

Asitha / StockDetailsApi-without-non-error-http-status-codes.xml

Created April 2, 2017 10:29

StockDetailsApi with a blocking call to the back end which returns a 404 response

	<api xmlns="http://ws.apache.org/ns/synapse" name="StockDetailsApi" context="/stock-details">
	<resource methods="GET" faultSequence="TestErrorHandlerSequence">
	<inSequence>
	<log>
	<property name="Log" value="stock details request recieved" />
	</log>

	<header name="To" scope="default" value="http://localhost:8280/inventory-api" />
	<payloadFactory media-type="json">
	<format>{"Account": "2"}</format>

Asitha / retrieve.query.param.with.$url.xml

Last active August 13, 2017 14:30

Example code using Synapse $url XPath variable to retrieve query param. Details can be found at http://asitha.github.io/cs/programming/wso2/esb/mediators/2017/08/14/get-query-params-with-wso2-esb/

	<?xml version="1.0" encoding="UTF-8"?>
	<api xmlns="http://ws.apache.org/ns/synapse" name="StoreAPI" context="/store">
	<resource methods="GET" uri-template="/view*">
	<inSequence>
	<!--Read and set the parameteres to a property -->
	<property name="name" expression="$url:name" scope="default" type="STRING"/>
	<property name="age" expression="$url:age" scope="default" type="STRING"/>

	<!--Directly use in a payload factory as follows -->
	<payloadFactory media-type="xml">

Asitha / query.param.using.get-property.xml

Created August 13, 2017 14:29

Using query.param property to retrieve query parameters with WSO2 ESB. Details can be found at http://asitha.github.io/cs/programming/wso2/esb/mediators/2017/08/14/get-query-params-with-wso2-esb/

	<?xml version="1.0" encoding="UTF-8"?>
	<api xmlns="http://ws.apache.org/ns/synapse" name="StoreAPI" context="/store">
	<resource methods="GET" uri-template="/view*">
	<inSequence>

	<!--Directly use in a payload factory as follows -->
	<payloadFactory media-type="xml">
	<format>
	<user xmlns="">
	<name>$1</name>

Asitha / message-broker-admin-api.yaml

Last active January 30, 2018 04:38

Message Broker Admin API

	swagger: '2.0'
	info:
	version: 1.0.0
	title: Broker Admin API
	description: Message Broker Management API
	license:
	name: Apache 2.0
	url: 'http://www.apache.org/licenses/LICENSE-2.0.html'
	schemes:
	- https

Asitha / id-remapping.sh

Created November 12, 2019 15:43

WSO2 MB Message Tracing ID remapping script for better debugging. Need to run within log folder and the output will be pushed to processed.txt

k=0; cp wso2carbon-trace-messages.log processed.txt; for i in $(grep "mapped to andes message" wso2carbon-trace-messages.log | awk '{print $12}'); do k=$((k+1)); sed -i "s/$i/MSG-$k/g" processed.txt; done;

Asitha Nanayakkara Asitha