Instrument a Lambda Function using AWS CLI

To pull the Splunk AppDynamics layer from Amazon1, using the AWS CLI:

  1. See Configuring a function to use layers.
  2. See Configure environment variables.

Configure Environment Variables

To finish injecting the tracer into AWS Lambda, configure environment variables depending on your programming language and version:

Node 16.x, Node 18.x, Node 20.x, Python 3.8, and Python 3.9

Add the environment variable AWS_LAMBDA_EXEC_WRAPPER with the value: /opt/appdynamics-extension-script:

AWS_LAMBDA_EXEC_WRAPPER = /opt/appdynamics-extension-script

For Python 3.7

Add an environment variable APPDYNAMICS_PYTHON_AUTOINSTRUMENT with the value set to true:

APPDYNAMICS_PYTHON_AUTOINSTRUMENT = true

Add the AWS Lambda Extension to Your Function when packaged as a container image

When your Lambda functions are deployed as container images, Lambda layers cannot be added via the function configuration. Instead, you must package the extension as part of your container image during the build process. For more details refer to this AWS Blog article.

To add the Cisco AppDynamics Lambda extension to your Lambda container, you will need to use a Dockerfile like those provided below:

Node.js 20
FROM amazon/aws-cli:2.2.4 AS downloader
ARG version_number=10
ARG access_key
ARG secret_key
ARG region
ARG cachebust
ENV AWS_ACCESS_KEY_ID=${access_key}
ENV AWS_SECRET_ACCESS_KEY=${secret_key}
ENV AWS_REGION=${region}
ENV VERSION_NUMBER=${version_number}
RUN yum install -y jq curl
RUN echo "Cache Bust: $cachebust"
RUN aws lambda get-layer-version-by-arn --arn arn:aws:lambda:$AWS_REGION:716333212585:layer:appdynamics-lambda-extension:$VERSION_NUMBER | jq -r '.Content.Location' | xargs curl -o extension.zip
FROM public.ecr.aws/lambda/nodejs:20
COPY --from=downloader /aws/extension.zip .
RUN yum install -y unzip && unzip extension.zip -d /opt && rm -f extension.zip
COPY package.json ./
RUN npm install
COPY app.js ./
# You can overwrite command in `serverless.yml` template
CMD ["app.handler"]
Node.js 18
FROM amazon/aws-cli:2.2.4 AS downloader
ARG version_number=10
ARG access_key
ARG secret_key
ARG region
ARG cachebust
ENV AWS_ACCESS_KEY_ID=${access_key}
ENV AWS_SECRET_ACCESS_KEY=${secret_key}
ENV AWS_REGION=${region}
ENV VERSION_NUMBER=${version_number}
RUN yum install -y jq curl
RUN echo "Cache Bust: $cachebust"
RUN aws lambda get-layer-version-by-arn --arn arn:aws:lambda:$AWS_REGION:716333212585:layer:appdynamics-lambda-extension:$VERSION_NUMBER | jq -r '.Content.Location' | xargs curl -o extension.zip
FROM public.ecr.aws/lambda/nodejs:18
COPY --from=downloader /aws/extension.zip .
RUN yum install -y unzip && unzip extension.zip -d /opt && rm -f extension.zip
COPY package.json ./
RUN npm install
COPY app.js ./
# You can overwrite command in `serverless.yml` template
CMD ["app.handler"]
Node.js 16
FROM amazon/aws-cli:2.2.4 AS downloader
ARG version_number=10
ARG access_key
ARG secret_key
ARG region
ARG cachebust
ENV AWS_ACCESS_KEY_ID=${access_key}
ENV AWS_SECRET_ACCESS_KEY=${secret_key}
ENV AWS_REGION=${region}
ENV VERSION_NUMBER=${version_number}
RUN yum install -y jq curl
RUN echo "Cache Bust: $cachebust"
RUN aws lambda get-layer-version-by-arn --arn arn:aws:lambda:$AWS_REGION:716333212585:layer:appdynamics-lambda-extension:$VERSION_NUMBER | jq -r '.Content.Location' | xargs curl -o extension.zip
FROM public.ecr.aws/lambda/nodejs:16
COPY --from=downloader /aws/extension.zip .
RUN yum install -y unzip && unzip extension.zip -d /opt && rm -f extension.zip
COPY package.json ./
RUN npm install
COPY app.js ./
# You can overwrite command in `serverless.yml` template
CMD ["app.handler"]
Python 3.9
FROM amazon/aws-cli:2.2.4 AS downloader
ARG version_number=10
ARG access_key
ARG secret_key
ARG region
ARG cachebust
ENV AWS_ACCESS_KEY_ID=${access_key}
ENV AWS_SECRET_ACCESS_KEY=${secret_key}
ENV AWS_REGION=${region}
ENV VERSION_NUMBER=${version_number}
RUN yum install -y jq curl
RUN echo "Cache Bust: $cachebust"
RUN aws lambda get-layer-version-by-arn --arn arn:aws:lambda:$AWS_REGION:716333212585:layer:appdynamics-lambda-extension:$VERSION_NUMBER | jq -r '.Content.Location' | xargs curl -o extension.zip
FROM public.ecr.aws/lambda/python:3.9
COPY --from=downloader /aws/extension.zip .
RUN yum install -y unzip && unzip extension.zip -d /opt && rm -f extension.zip
COPY app.py ./
# You can overwrite command in `serverless.yml` template
CMD ["app.handler"]
Python 3.8
FROM amazon/aws-cli:2.2.4 AS downloader
ARG version_number=10
ARG access_key
ARG secret_key
ARG region
ARG cachebust
ENV AWS_ACCESS_KEY_ID=${access_key}
ENV AWS_SECRET_ACCESS_KEY=${secret_key}
ENV AWS_REGION=${region}
ENV VERSION_NUMBER=${version_number}
RUN yum install -y jq curl
RUN echo "Cache Bust: $cachebust"
RUN aws lambda get-layer-version-by-arn --arn arn:aws:lambda:$AWS_REGION:716333212585:layer:appdynamics-lambda-extension:$VERSION_NUMBER | jq -r '.Content.Location' | xargs curl -o extension.zip
FROM public.ecr.aws/lambda/python:3.8
COPY --from=downloader /aws/extension.zip .
RUN yum install -y unzip && unzip extension.zip -d /opt && rm -f extension.zip
COPY app.py ./
# You can overwrite command in `serverless.yml` template
CMD ["app.handler"]
Python 3.7
FROM amazon/aws-cli:2.2.4 AS downloader
ARG version_number=10
ARG access_key
ARG secret_key
ARG region
ARG cachebust
ENV AWS_ACCESS_KEY_ID=${access_key}
ENV AWS_SECRET_ACCESS_KEY=${secret_key}
ENV AWS_REGION=${region}
ENV VERSION_NUMBER=${version_number}
RUN yum install -y jq curl
RUN echo "Cache Bust: $cachebust"
RUN aws lambda get-layer-version-by-arn --arn arn:aws:lambda:$AWS_REGION:716333212585:layer:appdynamics-lambda-extension:$VERSION_NUMBER | jq -r '.Content.Location' | xargs curl -o extension.zip
FROM public.ecr.aws/lambda/python:3.7
COPY --from=downloader /aws/extension.zip .
RUN yum install -y unzip && unzip extension.zip -d /opt && rm -f extension.zip
COPY app.py ./
# You can overwrite command in `serverless.yml` template
CMD ["app.handler"]

To build the container image containing your code as well as the Cisco AppDynamics Lambda extension, make sure you have the correct Dockerfile in your current directory and use the docker build command; for example:

docker build --build-arg version_number=$version_number --build-arg access_key=$(aws configure get aws_access_key_id) --build-arg secret_key=$(aws configure get aws_secret_access_key) --build-arg region=$(aws configure get region) -t <your tag> --build-arg cachebust=$(date +%s) .

Verify your Serverless Tracer Instrumentation

See Verify the Serverless Tracer Instrumentation.

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