How to create a Docker image with a Ballerina Program

Prerequisites : docker configured and running, curl In this tutorial we will explore how we can create a docker container which has a Ballerina service embedded within. Ballerina supports dockerizing out of the box. Here is how you can achieve this. Method 01 : Creating your own docker image First download the ballerina tools distribution. The latest ballerina pack can be found at : https://ballerinalang.org/downloads/ Extract the...

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Customizing the service URI of a Proxy Service in Enterprise Integrator

In WSO2 Enterprise integrator we have proxy services. In a proxy service by default if you create a proxy service the context of the service URL will be auto generated with the name of the proxy service name, For example if you create a proxy service name "myproxy". The service URL will be like the below. http://localhost:8290/services/myproxy But what if you want to have a custom URI? For ecample. http://localhost:8290/services/myproxy/idservice/1.0 Following...

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Reading Query Parameters in Enterprise Integrator

Following is how you can read query params from your rest service when using Enterprise Integrator. There are two ways to read your query params. 1. Assigning value to a property within a URI template. (get-property('uri.var.qtest')). If you look at the following synapse config I'm assigning the required query param to <api xmlns="http://ws.apache.org/ns/synapse" name="test" context="/qtest"> <resource methods="GET" uri-template="/search?q={qtest}"...

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How to allow Insecure/Non SSL connections to Kubernetes Master

If you need to allow insecure connections (non-SSL) to your K8S API Server, following is how you can get this done. First Open your API Server manifest. sudo vim /etc/kubernetes/manifests/kube-apiserver.yaml Now add the following properties. - --insecure-bind-address=0.0.0.0 - --insecure-port=8080 The complete kube-apiserver.yaml will look like following, (This is a fraction of the yaml file) apiVersion: v1 kind:...

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HTTP 404 when wget Jenkins Artefacts

I was trying to wget one of Jenkins Artifacts, but was continuously getting a 404 error. HTTP request sent, awaiting response... 404 Not Found 2017-05-19 13:12:13 ERROR 404: Not Found. My request was as follows. wget https://wso2.org/jenkins/job/ballerinalang/job/tools-distribution/257/org.ballerinalang.tools$ballerina-tools/artifact/org.ballerinalang.tools/ballerina-tools/0.87-SNAPSHOT/ballerina-tools-0.87-SNAPSHOT.zip So my issue...

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Blocking non existing server_name in NginX

Server names are defined using the server_name directive and determine which server block is used for a given request. See also “How nginx processes a request”. They may be defined using exact names, wildcard names, or regular expressions: NginX behaves in a way, such that, Nginx first decides which server should process the request. Let’s start with a simple configuration where all three virtual servers listen...

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Debugging : unable to find valid certification path to requested target

SSL can be a pain some times. Recently I was getting the following Exception continuously no-matter what ever certificate I import to the client-truststore. So it took the best out of me to debug and find-out the real issue behind this. In this post I'll explain how one can debug a SSL connection issue. org.apache.axis2.AxisFault: javax.net.ssl.SSLException: Connection has been shutdown: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException:...

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