Memo that Azure Functions × Node.js × Typescript was run by Docker on the local virtual environment and debugged from VS Code

Overview

When I was doing the Azure tutorial "[Deploy Azure Functions from Visual Studio Code] [* 1]" An error occurred when executing the function locally. Since it depends on the version of Node, the function is executed locally on Docker. It took a long time to check the debug execution settings, so I will leave it as a memorandum.

Source at this point

environment

• Windows 10 Home

• chocolatey 0.10.15

• Vagrant 2.2.10

• virtualbox 6.1.16

• Ubuntu 20.04 LTS

• Docker version 19.03.13, build 4484c46d9d

• docker-compose version 1.27.4, build 40524192

• Vagrant is launched with an IP of 192.168.50.10.

Tool preparation

• Install the 64-bit version according to the procedure of [Azure Functions Core Tools] [* 3]

choco install azure-functions-core-tools-3 --params "'/x64'" -y

Source

Docker settings

• As of 2020.11.01, Azure Functions is for node v12.
• Install the tool here so that Azure Functions can be operated with node.js
• package.json uses the one created by creating the project.

docker/functions/Dockerfile

# docker-Get container with node from hub
# https://hub.docker.com/_/node/
FROM node:12.19.0
WORKDIR /app
#Tool installation
RUN npm i -g azure-functions-core-tools@3 --unsafe-perm true
#Install Functions
COPY ./package.json /app/package.json
RUN npm install

docker/docker-compose.yml

version: "3.8"
services:
  az-functions:
    build: ./functions
    volumes:
      - ../HttpExample:/app/HttpExample
      - ../tsconfig.json:/app/tsconfig.json
      - ../local.settings.json:/app/local.settings.json
    ports:
      - 9229:9229
      - 7071:7071
    working_dir: /app
    command: [npm, run, start]

• Launch vagrant and enter the docker-compose up command in the docker directory to confirm that functions are launched.
• Make sure you can access http://192.168.50.10:7071/api/HttpExample?name=test.

Debug settings

When debugging from vscode, I couldn't do it exactly as it was created in Creating a project.

• The following is added
• address is the IP address of the virtual environment
• path on docker to remoteRoot

json:.vscode/launch.json

{
  "version": "0.2.0",
  "configurations": [
    {
      "name": "Vagrant - Docker: Attach to Node Functions",
      "type": "node",
      "request": "attach",
      "remoteRoot": "/app",
      "address": "192.168.50.10",
      "port": 9229,
      "protocol": "auto",
    }
  ]
}

• When running on docker, ʻattach fails unless it runs on 0.0.0.0`.

json:local.settings.json

{
  "IsEncrypted": false,
  "Values": {
    "AzureWebJobsStorage": "",
    "FUNCTIONS_WORKER_RUNTIME": "node",
    "languageWorkers:node:arguments": "--inspect=0.0.0.0:9229"
  }
}

• Re-run with docker-compose up
• Press F5 in visual studio and make sure it stops at the breakpoint
• Concern
• When debugging, an error occurs in str = JSON.parse (str); on line 7148 of worker-bundle.js. .. ..

reference

[Docker + Node.js Debugging Visual Studio Code] [* 5] [Deploy Azure Functions from Visual Studio Code] [* 1] [Functions Local Debugging] [* 2] Azure Functions Core Tools node debug guide [When https in source list cannot be obtained in Debian] [* 4] lsb_release: command not found in latest Ubuntu Docker container [Debug Node.js application with Visual Studio Code (local process attach / remote debug)] [* 6] How to set inspect port for nodejs [Developable debugable node.js application starting with Visual Studio Code (tutorial up to hello world with express + ejs)] [* 8]