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FROM amazonlinux:2

# Accept build arguments

ARG CC

ARG CXX

ARG CPP_VERSION

ARG LAMBDA_TASK_ROOT

ARG LAMBDA_PACKAGE_NAME

ARG DCMAKE_BUILD_TYPE

# Set environment variables from build arguments

ENV CC=${CC}

ENV CXX=${CXX}

ENV CPP_VERSION=${CPP_VERSION}

ENV LAMBDA_TASK_ROOT=${LAMBDA_TASK_ROOT}

ENV LAMBDA_PACKAGE_NAME=${LAMBDA_PACKAGE_NAME}

ENV DCMAKE_BUILD_TYPE=${DCMAKE_BUILD_TYPE}

# Install essential packages

RUN yum -y groupinstall "Development Tools" && \

yum -y install sudo nano make git gcc-c++ curl-devel ninja-build clang cmake3 unzip zlib-devel openssl-devel

# Increase git buffer size to 4GB

RUN git config --global http.postBuffer 4294967296

# Conditionally install AWS SDK

RUN if [ "$LAMBDA_PACKAGE_NAME" = "api-gateway" ] || [ "$LAMBDA_PACKAGE_NAME" = "dynamodb" ] || [ "$LAMBDA_PACKAGE_NAME" = "s3" ]; then \

git clone https://github.com/aws/aws-sdk-cpp.git && \

cd aws-sdk-cpp && \

git submodule update --init --recursive && \

mkdir build && \

cd build && \

if [ "$LAMBDA_PACKAGE_NAME" = "api-gateway" ]; then \

BUILD_ONLY="core"; \

elif [ "$LAMBDA_PACKAGE_NAME" = "dynamodb" ]; then \

BUILD_ONLY="dynamodb"; \

elif [ "$LAMBDA_PACKAGE_NAME" = "s3" ]; then \

BUILD_ONLY="s3"; \

fi && \

cmake3 .. -DBUILD_ONLY=$BUILD_ONLY \

-DCMAKE_BUILD_TYPE=${DCMAKE_BUILD_TYPE} \

-DBUILD_SHARED_LIBS=OFF \

-DCUSTOM_MEMORY_MANAGEMENT=OFF \

-DCMAKE_INSTALL_PREFIX=/usr/local && \

make && \

make install; \

RUN git clone https://github.com/awslabs/aws-lambda-cpp.git && \

cd aws-lambda-cpp && \

mkdir build && \

cd build && \

cmake3 .. -DCMAKE_BUILD_TYPE=${DCMAKE_BUILD_TYPE} -DCMAKE_POSITION_INDEPENDENT_CODE=ON -DCMAKE_INSTALL_PREFIX=/usr/local && \

make && \

make install

# Set the working directory to /var/task

WORKDIR ${LAMBDA_TASK_ROOT}

# Copy the Lambda function source code to the container

COPY examples/${LAMBDA_PACKAGE_NAME} ${LAMBDA_TASK_ROOT}/src

WORKDIR ${LAMBDA_TASK_ROOT}/src

# Build and package the Lambda function

RUN mkdir build && \

cd build && \

cmake3 .. -DCMAKE_BUILD_TYPE=${DCMAKE_BUILD_TYPE} -DCMAKE_INSTALL_PREFIX=/usr/local -DCPP_VERSION=${CPP_VERSION} && \

make aws-lambda-package-${LAMBDA_PACKAGE_NAME} && \

unzip ${LAMBDA_TASK_ROOT}/src/build/${LAMBDA_PACKAGE_NAME}.zip -d ${LAMBDA_TASK_ROOT}/lambda && \

mkdir -p /shared_lambda_zip && \

cp ${LAMBDA_TASK_ROOT}/src/build/${LAMBDA_PACKAGE_NAME}.zip /shared_lambda_zip/lambda.zip