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Plugin fails because of wrong installation path

See original GitHub issue

Issue Description

Actual Behaviour

Plugin silently failing at installation

sls dynamodb install

Expected Behaviour

Some feedback when it fails.

Steps to reproduce it

  • serverless 1.30.1
  • macOS High Sierra 10.13.4
  • Node v7.2.1
$ serverless create --template aws-python3 --path python-dynamo-tmp
$ npm install --save serverless-dynamodb-local
sls dynamodb install

Installing dynamodb does nothing.

This is my serverless.yml

service: python-dynamo-tmp

  name: aws
  runtime: python3.6

  - serverless-dynamodb-local

LogCat for the issue

After several hours of a headache since I just started looking into serverless and I’m not a Node.js developer it occurred to me to search the code base for something and I landed on the utils.js inside $project_path/node_modules/dynamodb-localhost/dynamodb/ and I added console.log(.. to print out the absolute path of the installation folder since nothing was being created and nothing was being printed to the terminal, this was the output…


Which was weird so what I did was to rewrite the absPath to just return the relPath parameter…

var absPath = function (relPath) {
    return relPath;

After that change I ran again the installation again but now successfully creating the .dynamodb directory in my project’s path, but now whenever I try to start the dynamodb service I get this…

$ sls dynamodb start
Dynamodb Local Started, Visit: http://localhost:8000/shell
Error: Unable to access jarfile DynamoDBLocal.jar
DynamoDB Local failed to start with code 1

I added a bunch more loggers all over the place and ended up in $project_path/node_modules/dynamodb-localhost/dynamodb/config.json where the install_path is just /bin so I changed it to…

    "setup": {
        "download_url": "",
        "install_path": "/Users/fcastellanos/Projects/serverless/python-dynamo-tmp/.dynamodb",
        "jar": "DynamoDBLocal.jar"
    "start": {
        "port": 8000

After making those changes everything works, I mean, I run sls dynamodb start without any errors and I can even go to http://localhost:8000/shell and see the DynamoDB Web Shell

Would you like to work on the issue?

I’m no node.js developer or serverless expert but I can help however I can.


Issue Analytics

  • State:open
  • Created 5 years ago
  • Reactions:11
  • Comments:9

github_iconTop GitHub Comments

kenleytomlincommented, Aug 20, 2018

@fcastellanos I found the same issue with serverless version 1.30.1 and serverless-dynamodb-local version 0.2.31.

Downgrading serverless-dynamodb-local to version 0.2.30 fixed the issue.

Roustalskicommented, Jan 28, 2019

Visiting here from stack overflow. I have been on v0.2.35 with no problems until today with the release of 0.2.36. I am staying on 35 and watching this for resolution.

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