As part of the runtime versions, four runtimes are specified: Three programming languages’ runtime (Node.js, Java, and Python), which are required to build the microservices, and Docker runtime to deploy the application locally using the sam local command.
#COMMAND TO START LOCAL DYNAMODB INSTALL#
In the install phase, there are two sequences: runtime-versions and commands. For more information about the order of precedence, see Run a Build (Console). This variable can be overridden either in the build project or while running the build. It contains the name of the S3 bucket in which the sam package command generated the AWS SAM template. In the env section, an environment variable named ARTIFACT_BUCKET is uploaded and initialized. python $CODEBUILD_SRC_DIR/tests/testsuite.py nohup python3 -m rver 8080 &>webserver.log & env-vars env-webapp.json &> webapp.log & Nohup sam local start-api -template webapp-sam.yaml \ docker-network codebuild-local &> name.log & Nohup sam local start-api -template name-sam.yaml \ Nohup sam local start-api -template greeting-sam.yaml \ provisioned-throughput ReadCapacityUnits=5,WriteCapacityUnits=5Īws dynamodb -endpoint-url batch-write-item \ key-schema AttributeName=Id,KeyType=HASH \ attribute-definitions AttributeName=Id,AttributeType=S \ echo "Starting local DynamoDB instance"ĭocker run -d -p 8000:8000 -network codebuild-local \Īws dynamodb create-table -endpoint-url \ output-template-file webapp-sam-packaged.yaml \ Sam package -template-file webapp-sam.yaml \ output-template-file name-sam-packaged.yaml \ Sam package -template-file name-sam.yaml \ output-template-file greeting-sam-packaged.yaml \ Sam package -template-file greeting-sam.yaml \ cd $CODEBUILD_SRC_DIR/microservices-webapp cd $CODEBUILD_SRC_DIR/microservices-name
sed -ie "s/CODEBUILD_IP/$own_ip/g" $CODEBUILD_SRC_DIR/env-webapp.json pylint $CODEBUILD_SRC_DIR/microservices-greeting/greeting_handler.py pip3 install -upgrade aws-sam-cli selenium pylint The example buildspec file contains the following code:ĪRTIFACT_BUCKET: "polyglot-codebuild-artifact-eu-west-1" To run DynamoDB Local and SAM Local docker runtime is being used hence the privileged mode should be enabled in the CodeBuild project. Automated UI testing uses the built-in headless browsers in the standard CodeBuild containers. The complete application is deployed locally using DynamoDB Local and the sam local command. To enable automated packaging and deployment, use AWS Serverless Application Model (AWS SAM) and the AWS SAM CLI. Another microservice making API calls to the above-mentioned name and greeting services, and provide a personalized greeting (microservice-webapp), is written in Java.Īll of these microservices are deployed as serverless functions in AWS Lambda and front-ended by an API interface using Amazon API Gateway.
#COMMAND TO START LOCAL DYNAMODB CODE#
The complete code is available in the GitHub repository aws-codebuild-polyglot-application. This post provides an example of a microservices application comprised of three different microservices written using different programming languages. For a complete list of supported runtime versions and how they must be specified in the buildspec file, see the build specification reference for CodeBuild.
Runtimes can be composed of different major versions of the same programming language, or different programming languages altogether. With CodeBuild, it is possible to specify multiple runtimes in the buildspec file as part of the install phase. This blog post explains how easy it is to build polyglot applications, test them, and package them for deployment using a single AWS CodeBuild project.ĬodeBuild adds support for Polyglot builds using runtime-versions. Microservices are becoming the new normal, and it’s natural to use multiple different programming languages for different microservices in the same application.
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