.split of undefined, undefined process.env._HANDLER

[edgahan]

Hi,

It looks like my process.env._HANDLER is undefined when invoking a lambda locally. This causes this line to break:
https://github.com/trek10inc/serverless-secrets/blob/master/client/index.js#L19

Is there something I am missing in my setup? It all seems to work if I tweak that line.

[azurelogic]

Are you using sls invoke local or the serverless offline plugin?

[HyperBrain]

Just ran into this with #26 and analyzed it. Neither Serverless nor serverless-offline set the _HANDLER variable in their local environment, so none of them will work.

For Serverless' invoke local I can prepare a fix and merge it there - that's easy because it executes a single function only.

For serverless-offline the problem is not trivial though. Offline loads multiple functions into its process, which means that it might be a bit tricky (if not impossible) to have the environment variable set differently per function.

Maybe serverless-secrets can be changed in a way, that it adds a SECRETS_HANDLER variable to the lambda functions and presets it with the handler name (that is known implicitly in the service).

However, I'll prepare a fix here in the repo as PR and in Serverless first, so that other plugins that rely on the var will work, but serverless-secrets will be completely independent of the actual AWS lambda environment (BTW: the _HANDLER env var is not documented officially by AWS, see http://docs.aws.amazon.com/lambda/latest/dg/current-supported-versions.html).

@azurelogic Are you ok with such a PR for this plugin?

[doublemarked]

Also experiencing this with sls invoke local. Is there a workaround while this PR is pending?

[franciscocpg]

@doublemarked
#30

With this PR I'm able to run sls invoke local loading secrets successfully.

[HyperBrain]

Together with #27 this makes it work with serverless-webpack and serverless-offline now.

[azurelogic]

@HyperBrain I merged #27. Sorry again for the delay.

@franciscocpg, @HyperBrain Are you sure that #30 works with projects with multiple functions? Does invoke local only load a single function? Object.keys(secrets.environments)[0] would not be guaranteed to work otherwise, because the desired function might not be the first element in the array.

[franciscocpg]

@azurelogic
When calling sls invoke local we pass the function as an argument so I'm almost sure yes.

Let me do some more tests with a few projects that I have that have a lot of functions just to make sure.

I answer you tomorrow, ok?

[HyperBrain]

@franciscocpg Do you have any idea how the same thing can be solved with serverless offline? That would complete the full local support.

The problem I see there is, that offline runs in one process, so there is no distinction of multiple functions in regards of the environment.

One thought I had was, to use a map in this case and let the client use something else than _HANDLER in case IS_OFFLINE is set to true. But I'm still in the process of evaluating possible solutions.

[franciscocpg]

@HyperBrain I still didn't take a look into serverless-offline so I'm out of ideas too 😞

to use a map in this case

You mean map the endpoint address to the function handler?

[HyperBrain]

Somehow... I don't have a clear view of that yet - maybe going that way is not feasible.

[franciscocpg]

Hi @HyperBrain
Are you managed to solve this issue?

I was able to solve it and use serverless-secrets with invoke local and serverless-offline using these 2 PRs:

• Fix process.env._HANDLER undefined #30
• Adding process.env._HANDLER dherault/serverless-offline#393

Unfortunately it seems that serverless-secrets repo is not being actively maintained anymore so I'm using my fork for months now (:cry:) .

[HyperBrain]

@franciscocpg Sorry, no I did not have time to investigate further here - currently we do not use serverless-secrets at work in production projects.
But as I see it, the 2 PRs solve the problem properly. Maybe we can try to get it in here and in offline.

@azurelogic @kcwinner Is the project still actively maintained, so that someone can get the mentioned PR in here?