Firebase-Admin with AWS Lambda Python

Question

I am currently writing a Python server to deploy on AWS Lambda. I want to use the firebase-admin package to send notifications with FCM and read data from cloud firestore. however when I try deploying my function to AWS Lambda with the .zip file archives, I get this error on execution:

[ERROR] Runtime.ImportModuleError: Unable to import module 'lambda_function': Failed to import the Cloud Firestore library for Python. Make sure to install the "google-cloud-firestore" module.

I installed the module with this: pip install --target . firebase-admin into a folder, added my code files (to the root as instructed), zipped it recursively and uploaded it with the aws-cli, I can clearly see that there is a google-cloud-firestore folder inside the .zip so i'm not sure whats going on. any help is appreciated!

Koby 27 · Accepted Answer · 2021-02-28 10:56:33Z

4

The problem is that the firebase-admin package uses some libraries that are compiled differently on different OSes, so you need to create a docker image and install everything there, zip it up and upload it as a layer. Here is an example docker file:

FROM amazonlinux:2.0.20210126.0

RUN yum -y groupinstall "Development Tools" && \
yum -y install openssl-devel bzip2-devel libffi-devel && \
yum -y install wget && \
wget https://www.python.org/ftp/python/3.8.7/Python-3.8.7.tgz && \
yum install -y tar && \
yum install -y gzip && \
tar xvf Python-3.8.7.tgz && \
cd Python-3.8*/ && \
./configure --enable-optimizations && \
make altinstall && \
yum install -y zip && \
yum clean all


RUN python3.8 -m pip install --upgrade pip && \
python3.8 -m pip install virtualenv

RUN python3.8 -m venv myvenv
RUN source myvenv/bin/activate
RUN pip install firebase-admin -t ./python
RUN deactivate
RUN zip -r python.zip ./python/

And then copy the zip file:

docker cp container_name:python.zip ./Desktop/

answered Feb 28, 2021 at 10:56

Koby 27

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2 Comments

West Over a year ago

For me ` RUN deactivate` failed with error deactivate: command not found. I had to do without virtual environment

Vinasirajan Vilakshan Over a year ago

Run it as a single command "RUN python3.8 -m venv myvenv && \ source myvenv/bin/activate && \ pip install firebase-admin -t ./python && \ deactivate" to get rid of this error

Mat · Accepted Answer · 2021-02-22 15:24:32Z

2

+50

What you're looking for is a LambdaLayer.

There are a bunch of resources on that online, but essentially you want to make a Zip file in this format*:

myLayer.zip/
-- python/
---- lib/
------ pythonX.Y/
-------- site-packages/
---------- firebase-admin
---------- ...

^{*where X.Y is the python version you're targetting}

Then, either in the AWS console or in your CI/CD, you can add that LambdaLayer in your Function's configuration, which lets you import all the libraries in it.

answered Feb 22, 2021 at 15:24

Mat

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1 Comment

West Over a year ago

This actually worked for you??I followed this and its definitely not working

Kenton Blacutt · Accepted Answer · 2021-02-26 21:51:03Z

0

From the look of it you have bundled your code correctly and deployed successfully. The error occurs because Firestore relies on a C-based implementation of GRPC. By default this does not work on AWS Lambda. I'm currently creating a work-around and will update this post with my results.

answered Feb 26, 2021 at 21:51

Kenton Blacutt

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Comments

faynercosta · Accepted Answer · 2022-10-27 02:43:03Z

-3

Would be useful for next people if someone could explain how to run a docker file.

I'm not an expert, so what I've done was to create a docker instance based on the image mentioned, then I executed each command individually within the CLI, and lastly, since I wasn't able to zip and copy the files from my container to the desktop, I had to find the folder through my windows explorer within the Linux virtual enviroment so that I could ZIP and bring.

It actually worked, but again, will be very helpful if someone can complement the best answer by letting everyone know how to build and execute a docker file.

Best!

answered Oct 27, 2022 at 2:43

faynercosta

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1 Comment

GAVD Over a year ago

This does not provide an answer to the question. Once you have sufficient reputation you will be able to comment on any post; instead, provide answers that don't require clarification from the asker. - From Review

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