feat: add Maximum number of Parallelism branches to env

[XiaoBa-Yu]

Summary

Need to increase the maximum number of parallel branches.

Tip

Resolves #15969.

Screenshots

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Checklist

Important

Please review the checklist below before submitting your pull request.

• This change requires a documentation update, included: Dify Document
• I understand that this PR may be closed in case there was no previous discussion or issues. (This doesn't apply to typos!)
• I've added a test for each change that was introduced, and I tried as much as possible to make a single atomic change.
• I've updated the documentation accordingly.
• I ran dev/reformat(backend) and cd web && npx lint-staged(frontend) to appease the lint gods

[crazywoola]

Please see this PR feat: env MAX_TOOLS_NUM (#15431).

You need to add those files in the docker-compose.yaml as well. And don't forget to link an existing issue or create one.

[XiaoBa-Yu]

Please see this PR feat: env MAX_TOOLS_NUM (#15431).

You need to add those files in the docker-compose.yaml as well. And don't forget to link an existing issue or create one.

Modified as requested, thanks

[crazywoola]

dify/web/app/components/workflow/constants.ts

Line 419 in 2c17bb2

export const PARALLEL_LIMIT = 10

I think you should read the new variable here.

[XiaoBa-Yu]

dify/web/app/components/workflow/constants.ts

Line 419 in 2c17bb2

export const PARALLEL_LIMIT = 10

I think you should read the new variable here.

Sorry, I don't quite understand what you mean, could you explain it in more detail?

[crazywoola]

At the moment I don't see the front-end code reading this newly defined variable

[XiaoBa-Yu]

At the moment I don't see the front-end code reading this newly defined variable

I did not define new variables, I just modified the original variables.

[SimonPP123]

How can I make the maximum parallel limit to 100 for example? I tried different approaches, but nothing helped:
https://take.ms/svfEs5

[XiaoBa-Yu]

How can I make the maximum parallel limit to 100 for example? I tried different approaches, but nothing helped: https://take.ms/svfEs5

[SimonPP123]

How can I make the maximum parallel limit to 100 for example? I tried different approaches, but nothing helped: https://take.ms/svfEs5

Thanks for the screenshots and clear examples!
I did it, but nothing was changed - https://take.ms/PHDm9
In the repository there is no .env file for web, there is only .env.example and I copied it and created .env file based on .env.example.
In .env file of docker, there was no MAX_PARALLEL_LIMIT variable, so I needed to add it. I made it MAX_PARALLEL_LIMIT=100
I restarted the all containers in the docker but the changes were not processed.

[SimonPP123]

It is working for Loop node, but not for iteration:
Loop - https://take.ms/7aUro
Iteration - https://take.ms/Rt2CC

[DavideDelbianco]

This PR is wrong

[DavideDelbianco]

@XiaoBa-Yu if you want to contribute to public project, you have to understand how it works, and you have to test your modifications.

The project uses a docker-compose that reads ENVIRONMENT_VARIABLE from the .env file copied from

You probably copied code from
The PR #14863 by @Woo0ood
That introduced the ENVIRONMENT VARIABLE
LOOP_NODE_MAX_COUNT=100

That value is used in the project web, the project has its own Dockerfile and it is made to read variables from his own .env file

Inspecting the file you should notice that all the ENVIRONMENT VARIABLES are prefixed with NEXT_PUBLIC_

To use the ENVIRONMENT VARIABLE value in the typescript code there's a file that reads the value and exports a CONSTANT VARIABLE
The file is: web/config/index.ts

That CONSTANT VARIABLE is then used in the front-end Typescript files by importing it:

By now, you should ask yourself: "how is it possible that the CONSTANT variable in the code reads its value from an ENVIRONMENT variable that has a name DIFFERENT from the one that I change in the docker-compose ??"

The answer is:

There's NO magic, the variables are re-exported.

@Woo0ood unfortunately forgot this step.

With this PR #15964
You introduced the variable MAX_PARALLEL_LIMIT

@SimonPP123 Objected that it was NOT working
Ironically you give instructions with a screenshot where you are marking two DIFFERENT variables.

You have another PR #16805 where you used the correct file to read variable
Yet even if those two PR are closely related you managed to to the same thing in 2 different files.

web/app/components/workflow/constants.ts
for NEXT_PUBLIC_MAX_PARALLEL_LIMIT introduces the env variables in a file that had none

In the other PR #16805 that is after this one, you correctly use:
web/config/index.ts
for NEXT_PUBLIC_MAX_ITERATIONS_NUM

but did not come back to this PR to fix it

[XiaoBa-Yu]

它适用于循环节点，但非用于迭代： 循环 - https://take.ms/7aUro 迭代 - https://take.ms/Rt2CC

It is working for Loop node, but not for iteration: Loop - https://take.ms/7aUro Iteration - https://take.ms/Rt2CC

Sorry, I misunderstood your question before.

iteration

Sorry, I misunderstood your question. The 'Maximum parallelism' variable of the iteration node currently does not support env settings. The 'Maximum Loop Count' variable of the loop node is set by the NEXT_PUBLIC_LOOP_NODE_MAX_COUNT environment variable.