Follow the below steps to install Thundra Sidekick SDK to your application.

• Download the latest Thundra agent from the Thundra repo.

• Configure the agent via environment variable or configuration file.

• Add Thundra agent to the application by setting the -javaagent VM argument

Download the Agent

Download the latest Thundra agent from the Thundra repo.

Configure the Agent

In order to configure the agent, you'll need an API key from Thundra Sidekick. You can see your API key in the Welcome Tab.

Configure by Environment Variable

The Thundra agent can be configured externally through environment variables:

• Configure the Thundra API key by setting the THUNDRA_APIKEY environment variable. This configuration is mandatory.

• Configure application name by setting the THUNDRA_AGENT_APPLICATION_NAME environment variable. This configuration is mandatory.

• Configure application stage (local, dev, lab, staging, prod, etc.) by setting theTHUNDRA_AGENT_APPLICATION_STAGE environment variable. This configuration is optional.

• Configure application version (1.0.0, 1.0.1-SNAPSHOT, etc.) by setting theTHUNDRA_AGENT_APPLICATION_VERSION environment variable. This configuration is optional.

So, a sample configuration will look like this:

export THUNDRA_APIKEY=<YOUR-THUNDRA-API-KEY> 
export THUNDRA_AGENT_APPLICATION_NAME=user-service
export THUNDRA_AGENT_APPLICATION_STAGE=dev
export THUNDRA_AGENT_APPLICATION_VERSION=1.0.1-SNAPSHOT

Configure by YAML format

Thundra agent can be configured through a YAML formatted configuration file named thundra-config.yml in the classpath (for example the config file might be located under src/main/resources directory):

• Configure the Thundra API key by setting the thundra.apiKey YAML key. This configuration is mandatory.

• Configure the application name by setting thethundra.agent.application.name YAML key. This configuration is mandatory.

• Configure the application stage (local, dev, lab, staging, prod, etc.) by setting thethundra.agent.application.stage YAML key. This configuration is optional.

• Configure the application version (1.0.0, 1.0.1-SNAPSHOT, etc.) by setting the thundra.agent.application.version YAML key. This configuration is optional.

So, a sample configuration file thundra-config.yml will look like this:

thundra:
 apiKey: <YOUR-THUNDRA-API-KEY>
 agent:
   application:
     name: user-service
     stage: dev
     version: 1.0.1-SNAPSHOT
​

Sample Docker Configuration

Here you can see a sample Docker configuration. It may differ from your own Docker configuration. You need to modify this sample according to your own Docker configuration.

FROM openjdk:8
RUN mkdir -p /app
​
# Copy app artifact
ADD target/<Your-App>.jar /app/<Your-App>.jar
​
# Copy Thundra bootstrap agent artifact. 
# Please rename with the file you have downloaded at the first step.
ADD thundra-agent-bootstrap.jar /app/thundra-agent-bootstrap.jar
​
WORKDIR /app
EXPOSE 8080
ENTRYPOINT [ "java", "-javaagent:thundra-agent-bootstrap.jar", "-jar", "<Your-App>.jar" ]

You can use the example below if you would like to use environment variables with docker run

docker run ... \ 
    -e THUNDRA_APIKEY=<YOUR-THUNDRA-API-KEY> \
    -e THUNDRA_AGENT_APPLICATION_NAME=<YOUR-APP-NAME> \
    -e THUNDRA_AGENT_APPLICATION_STAGE=dev \
    -e THUNDRA_AGENT_APPLICATION_VERSION=1.0.1-SNAPSHOT \
    ...

Add Thundra to Your Application

Run the following command to add Thundra to your application.

java -javaagent:<path-to-thundra-agent> -jar <your-app-jar> ...