Docker image for build AWS Lambdas with native dependencies right way

Base helper image for build and test AWS lambda packages without EC2 instances

Inspired by authors of An easier way to build AWS Lambda deployment packages — with Docker instead of EC2 and How to build an AWS Lambda function with Python 3.7 (the right way) articles

Main problem described in the The Black Magic of Python Wheels. Due to the bug in the patcheif we need to use this repo with patched for auditwheel version

Why? If...

• Q We are already have AWS SAM CLI

• A: aws/aws-sam-cli#973

• Q We are use chalice

• A This tool cover example of a library with C extensions and no wheel files case with local building runtime

Requirements

• Docker
• docker-compose

Usage

• Create Dockerfile with installed native requirements for python lib build
• Copy your code and requirements.txt to the ./src dir
• Execute make build-package

make build-package 
docker build \
        ./example
lambda-builder_1  | + pip wheel -r requirements.txt
lambda-builder_1  | Looking in links: /.wheelhouse
lambda-builder_1  | Processing /.wheelhouse/mysqlclient-1.4.6-cp37-cp37m-manylinux2014_x86_64.whl
lambda-builder_1  |   File was already downloaded /.wheelhouse/mysqlclient-1.4.6-cp37-cp37m-manylinux2014_x86_64.whl
lambda-builder_1  | Skipping mysqlclient, due to already being wheel.
lambda-builder_1  | + auditwheel repair --plat manylinux2014_x86_64 -w /.wheelhouse /.wheelhouse/mysqlclient-1.4.6-cp37-cp37m-linux_x86_64.whl
lambda-builder_1  | INFO:auditwheel.main_repair:Repairing mysqlclient-1.4.6-cp37-cp37m-linux_x86_64.whl
lambda-builder_1  | INFO:auditwheel.wheeltools:Previous filename tags: linux_x86_64
lambda-builder_1  | INFO:auditwheel.wheeltools:New filename tags: manylinux2014_x86_64
lambda-builder_1  | INFO:auditwheel.wheeltools:Previous WHEEL info tags: cp37-cp37m-linux_x86_64
lambda-builder_1  | INFO:auditwheel.wheeltools:New WHEEL info tags: cp37-cp37m-manylinux2014_x86_64
lambda-builder_1  | INFO:auditwheel.main_repair:
lambda-builder_1  | Fixed-up wheel written to /.wheelhouse/mysqlclient-1.4.6-cp37-cp37m-manylinux2014_x86_64.whl
lambda-builder_1  | + auditwheel show /.wheelhouse/mysqlclient-1.4.6-cp37-cp37m-manylinux2014_x86_64.whl
lambda-builder_1  | 
lambda-builder_1  | mysqlclient-1.4.6-cp37-cp37m-manylinux2014_x86_64.whl is consistent
lambda-builder_1  | with the following platform tag: "manylinux2014_x86_64".
lambda-builder_1  | 
lambda-builder_1  | The wheel references external versioned symbols in these system-
lambda-builder_1  | provided shared libraries: libc.so.6 with versions {'GLIBC_2.3',
lambda-builder_1  | 'GLIBC_2.14', 'GLIBC_2.17', 'GLIBC_2.7', 'GLIBC_2.4', 'GLIBC_2.3.4',
lambda-builder_1  | 'GLIBC_2.16', 'GLIBC_2.8', 'GLIBC_2.2.5'},
lambda-builder_1  | libkrb5support-1e00ebb8.so.0.1 with versions {'krb5support_0_MIT'},
lambda-builder_1  | libk5crypto-83914fc5.so.3.1 with versions {'k5crypto_3_MIT'},
lambda-builder_1  | libkrb5-5171cf0b.so.3.3 with versions {'krb5_3_MIT'},
lambda-builder_1  | libcrypto-1763ce4d.so.1.0.2k with versions {'libcrypto.so.10',
lambda-builder_1  | 'OPENSSL_1.0.1_EC'}, libkeyutils-caf8c69c.so.1.5 with versions
lambda-builder_1  | {'KEYUTILS_0.3', 'KEYUTILS_1.0', 'KEYUTILS_1.5'}, libresolv.so.2 with
lambda-builder_1  | versions {'GLIBC_2.2.5'}, libpthread.so.0 with versions
lambda-builder_1  | {'GLIBC_2.3.2', 'GLIBC_2.2.5'}, libdl.so.2 with versions
lambda-builder_1  | {'GLIBC_2.2.5'}, libm.so.6 with versions {'GLIBC_2.2.5'},
lambda-builder_1  | libssl-54f048ca.so.1.0.2k with versions {'libssl.so.10'},
lambda-builder_1  | libmysqlclient-70ab951e.so.18.0.0 with versions {'libmysqlclient_16'}
lambda-builder_1  | 
lambda-builder_1  |   adding: MySQLdb/_mysql.cpython-37m-x86_64-linux-gnu.so (deflated 69%)
lambda-builder_1  |   adding: MySQLdb/cursors.py (deflated 71%)
lambda-builder_1  |   adding: MySQLdb/_exceptions.py (deflated 63%)
lambda-builder_1  |   adding: MySQLdb/release.py (deflated 7%)
lambda-builder_1  |   adding: MySQLdb/converters.py (deflated 62%)
lambda-builder_1  |   adding: MySQLdb/__pycache__/ (stored 0%)
lambda-builder_1  |   adding: MySQLdb/__pycache__/__init__.cpython-37.pyc (deflated 45%)
lambda-builder_1  |   adding: MySQLdb/__pycache__/release.cpython-37.pyc (deflated 13%)
lambda-builder_1  |   adding: MySQLdb/__pycache__/converters.cpython-37.pyc (deflated 48%)
lambda-builder_1  |   adding: MySQLdb/__pycache__/_exceptions.cpython-37.pyc (deflated 62%)
lambda-builder_1  |   adding: MySQLdb/__pycache__/times.cpython-37.pyc (deflated 52%)
lambda-builder_1  |   adding: MySQLdb/__pycache__/cursors.cpython-37.pyc (deflated 58%)
lambda-builder_1  |   adding: MySQLdb/__pycache__/compat.cpython-37.pyc (deflated 18%)
lambda-builder_1  |   adding: MySQLdb/__pycache__/connections.cpython-37.pyc (deflated 54%)
lambda-builder_1  |   adding: MySQLdb/times.py (deflated 70%)
lambda-builder_1  |   adding: MySQLdb/constants/ (stored 0%)
lambda-builder_1  |   adding: MySQLdb/constants/ER.py (deflated 65%)
lambda-builder_1  |   adding: MySQLdb/constants/CR.py (deflated 57%)
lambda-builder_1  |   adding: MySQLdb/constants/CLIENT.py (deflated 32%)
lambda-builder_1  |   adding: MySQLdb/constants/FLAG.py (deflated 26%)
lambda-builder_1  |   adding: MySQLdb/constants/__pycache__/ (stored 0%)
lambda-builder_1  |   adding: MySQLdb/constants/__pycache__/__init__.cpython-37.pyc (deflated 10%)
lambda-builder_1  |   adding: MySQLdb/constants/__pycache__/CR.cpython-37.pyc (deflated 42%)
lambda-builder_1  |   adding: MySQLdb/constants/__pycache__/FLAG.cpython-37.pyc (deflated 25%)
lambda-builder_1  |   adding: MySQLdb/constants/__pycache__/ER.cpython-37.pyc (deflated 58%)
lambda-builder_1  |   adding: MySQLdb/constants/__pycache__/FIELD_TYPE.cpython-37.pyc (deflated 32%)
lambda-builder_1  |   adding: MySQLdb/constants/__pycache__/CLIENT.cpython-37.pyc (deflated 31%)
lambda-builder_1  |   adding: MySQLdb/constants/FIELD_TYPE.py (deflated 40%)
lambda-builder_1  |   adding: MySQLdb/constants/__init__.py (deflated 2%)
lambda-builder_1  |   adding: MySQLdb/__init__.py (deflated 62%)
lambda-builder_1  |   adding: lambda.py (deflated 29%)
lambda-builder_1  |   adding: mysqlclient-1.4.6.dist-info/ (stored 0%)
lambda-builder_1  |   adding: mysqlclient-1.4.6.dist-info/METADATA (deflated 59%)
lambda-builder_1  |   adding: mysqlclient-1.4.6.dist-info/INSTALLER (stored 0%)
lambda-builder_1  |   adding: mysqlclient-1.4.6.dist-info/top_level.txt (stored 0%)
lambda-builder_1  |   adding: mysqlclient-1.4.6.dist-info/WHEEL (deflated 3%)
lambda-builder_1  |   adding: mysqlclient-1.4.6.dist-info/LICENSE (deflated 62%)
lambda-builder_1  |   adding: mysqlclient-1.4.6.dist-info/RECORD (deflated 52%)
lambda-builder_1  |   adding: mysqlclient.libs/ (stored 0%)
lambda-builder_1  |   adding: mysqlclient.libs/libgssapi_krb5-594507f6.so.2.2 (deflated 67%)
lambda-builder_1  |   adding: mysqlclient.libs/libssl-54f048ca.so.1.0.2k (deflated 70%)
lambda-builder_1  |   adding: mysqlclient.libs/libk5crypto-83914fc5.so.3.1 (deflated 66%)
lambda-builder_1  |   adding: mysqlclient.libs/libkrb5-5171cf0b.so.3.3 (deflated 66%)
lambda-builder_1  |   adding: mysqlclient.libs/libcom_err-7d8345a5.so.2.1 (deflated 68%)
lambda-builder_1  |   adding: mysqlclient.libs/libkeyutils-caf8c69c.so.1.5 (deflated 69%)
lambda-builder_1  |   adding: mysqlclient.libs/libz-5de0a349.so.1.2.8 (deflated 49%)
lambda-builder_1  |   adding: mysqlclient.libs/libcrypto-1763ce4d.so.1.0.2k (deflated 60%)
lambda-builder_1  |   adding: mysqlclient.libs/libkrb5support-1e00ebb8.so.0.1 (deflated 69%)
lambda-builder_1  |   adding: mysqlclient.libs/libmysqlclient-70ab951e.so.18.0.0 (deflated 75%)
lambda-builder_1  |   adding: mysqlclient.libs/libselinux-e812e8aa.so.1 (deflated 57%)
lambda-builder_1  |   adding: requirements.txt (stored 0%)
lambda-builder_1  | + chmod -R 777 /.build /.package /.wheelhouse
aws-lambda-builder_lambda-builder_1 exited with code 0

Results can be found in ./.build(sources + libs) and in ./.package(ready to use zipped lambda) dirs. Python version and other globals can be modified in .env file

Testing

Testing stack example based on lambci/lambda can be found here

$ make test-package
docker-compose -f docker-compose.lambci.yml up
Starting aws-lambda-builder_mysql_1  ... done
Starting aws-lambda-builder_lambda_1 ... done
Attaching to aws-lambda-builder_mysql_1, aws-lambda-builder_lambda_1
----------------skipped-----------------
mysql_1   | 2020-04-03T20:27:09.994163Z 0 [System] [MY-011323] [Server] X Plugin ready for connections. Socket: '/var/run/mysqld/mysqlx.sock' bind-address: '::' port: 33060
lambda_1  | connected
lambda_1  | START RequestId: c8aa1d91-3c2f-12b1-3e54-fbbd31477dd0 Version: $LATEST
lambda_1  | END RequestId: c8aa1d91-3c2f-12b1-3e54-fbbd31477dd0
lambda_1  | REPORT RequestId: c8aa1d91-3c2f-12b1-3e54-fbbd31477dd0      Init Duration: 5336.32 ms       Duration: 10.30 ms      Billed Duration: 100 ms Memory Size: 1536 MB    Max Memory Used: 28 MB   
lambda_1  | 
lambda_1  | {}
aws-lambda-builder_lambda_1 exited with code 0
^CGracefully stopping... (press Ctrl+C again to force)

Available commands

$ make

Usage:
 make <target>

Targets:
 help        Display this help
 build-image  Build base builder Docker image
 build-image-custom  Build custom runtime from ./examples/Doskerfile
 push-image  Push base builder image to the regestry
 clean       Clean dirs
 build-package  Build lambda package with ./examples/Doskerfile as runtime
 test-package  Test lambda with the help of lambci/lambda

References

• amazonlinux DockerHub
• Lambda runtimes