project-flogo/Lobby

All things Project Flogo... Report issues, chat with users & contributors. Join channel project-flogo/developers for project contribution & dev focused conversations.

Leon Stigter

@retgits

Can you share a little bit more what you’re trying to do? Are you building a Flogo app or activities? Which command is executed before it fails, and is there any error in the logs?

rahulgit-ps

@rahulgit-ps

I have just forked the package and ran on travis-ci. Here are my logs : https://travis-ci.com/github/rahulgit-ps/flogo/builds/173794675. It is showing invalid email token error, and if I add email, then it shows github_token error.

Leon Stigter

@retgits

You’ve forked the repository containing the docs and a bunch of samples. The Travis CI job, is there to deploy updated docs when the job is successful. If that’s really what you want to do, you’ll need to provide both a GitHub token and a valid email address. Though I guess you’ll likely want to look at source code repositories like https://GitHub.com/project-Flogo

rahulgit-ps

@rahulgit-ps

ohh....okay. Actually I am more focused towards adding arm64 support to flogo's travis-ci jobs. But as you have mentioned that the project I have forked is only for docs deployment, I guess I am working on the wrong repo then. Probably I should work on other repos provided in your link. Am I making sense?

lancedouglas1

@lancedouglas1

Hello All, I'm using OSS the webui to design some tests, and then running create & build binaries on the CLI from the exported json. In my test i'm using mysql (which I manually include the repo for in the json). I'm pushing my binary to Pivotal Web Services.

My challenge is that the mysql server on AWS uses tls and I'd like to inject the cert.pem as per (https://godoc.org/github.com/go-sql-driver/mysql#RegisterServerPubKey) in the go code before I cli:build->binary it.

Is there a way to modify the actual go code before I build the binary?

Am I approaching this correctly?

Samip Kothari

@skothari-tibco

So you built the mysql-activity and you're using that

lancedouglas1

@lancedouglas1

correct

Samip Kothari

@skothari-tibco

Cool. So you can add fields in the metadata.go file to accept the cert files and use that within your activity.go to connect to MySQL server. You can add those fields to descriptor.json manually or use a cli plugin (should be under cli-plugin/devtool) to automatically sync contents between metadata.go and descriptor.json file.

lancedouglas1

@lancedouglas1

@skothari-tibco awesome, thanks. I'll try that.

Samip Kothari

@skothari-tibco

👍

Milos Veljkovic

@milosveljkovic

Hey guys, sorry for interrupt but I am blocked right now because I do not know in which direction to go. This is all about:
I get from POST request (trigger) json object, and now i am wondering what is the best way to 'process' every of object properties because every of them should go through the mathematical calculation. So what is the best way to do calculation for object's properties, each. Thanks in advance!

Matt Ellis

@mellistibco

hi @milosveljkovic what kind of math operations do you want to perform? do you need a custom activity or just basic operations available as mapping functions? you can add a return activity and reply with the desired json object and use the mapper functions

Milos Veljkovic

@milosveljkovic

I need custom math operations which will transform data from arduino to understandable value (from volt to humidity for example)7

Is there any example of how to use mapper for web ui ?

Matt Ellis

@mellistibco

you may need to implement mapper functions if you need to do something specific. yeah let me find a sample

a few examples in here: https://tibcosoftware.github.io/flogo/labs/bookstore/

mapping details, mostly tied to the raw json format, but worth a read: https://tibcosoftware.github.io/flogo/development/flows/mapping/

anborg

@anborg

Is there windows binary for core & ui somewhere > I want to check the system. without installing docker/ golang.

Matt Ellis

@mellistibco

No. You would need Go to build the apps if you didn’t want to use the Docker image. The apps you model are saved as .json files but the engine is compiled based on your json which allows only the required app dependencies to be included

anborg

@anborg

so one Go compilation flogo-core & and another flogo-web - those two is enough to have UI and a basic system?

Matt Ellis

@mellistibco

Yup. You can just use Flogo web and build apps via the web ui and then your target machines that will run your apps don’t need go or any additional dependencies

anborg

@anborg

I tried with master branch, didn't work. Later tried one of the tags, it worked. git checkout -b 632ab63025368b82fccab1497423538e93493c1

Matt Ellis

@mellistibco

What repo? Flogo-web?

anborg

@anborg

yes.

Matt Ellis

@mellistibco

hmm @fcastill

anborg

@anborg

::Persistent<v8::Object,v8::NonCopyablePersistentTraits<T>>' [C:\data\projects_go\flogo-web\node_modules\bufferutil\build\bufferutil.vcxproj]
with
[
T=v8::Object
] (compiling source file ..\src\bufferutil.cc)
c:\data\projects_go\flogo-web\node_modules\bufferutil\node_modules\nan\nan.h(1859): note: see declaration of 'Nan::Persistent<v8::Object,v8::NonCopyablePersistentTraits<T>>'
with
[
T=v8::Object
] (compiling source file ..\src\bufferutil.cc)
c:\data\projects_go\flogo-web\node_modules\bufferutil\src\bufferutil.cc(12): error C2660: 'v8::Value::Int32Value': function does not take 0 arguments [C:\data\projects_go\flogo-web\node_modules\bufferutil\build\bufferutil.vcxproj]
c:\users\pnataraj\appdata\local\node-gyp\cache\14.8.0\include\node\v8.h(2869): note: see declaration of 'v8::Value::Int32Value' (compiling source file ..\src\bufferutil.cc)
c:\data\projects_go\flogo-web\node_modules\bufferutil\src\bufferutil.cc(13): error C2660: 'v8::Value::Int32Value': function does not take 0 arguments [C:\data\projects_go\flogo-web\node_modules\bufferutil\build\bufferutil.vcxproj]
c:\users\pnataraj\appdata\local\node-gyp\cache\14.8.0\include\node\v8.h(2869): note: see declaration of 'v8::Value::Int32Value' (compiling source file ..\src\bufferutil.cc)
gyp ERR! build error
gyp ERR! stack Error: C:\\Program Files (x86)\\Microsoft Visual Studio\\2017\\BuildTools\\MSBuild\\15.0\\Bin\\MSBuild.exe failed with exit code: 1
gyp ERR! stack at ChildProcess.onExit (C:\apps\scoop\core\apps\nodejs\14.8.0\node_modules\npm\node_modules\node-gyp\lib\build.js:194:23)
gyp ERR! stack at ChildProcess.emit (events.js:314:20)
gyp ERR! stack at Process.ChildProcess._handle.onexit (internal/child_process.js:276:12)
gyp ERR! System Windows_NT 10.0.17134
gyp ERR! command \"C:\\apps\\scoop\\core\\apps\\nodejs\\current\\node.exe\" \"C:\\apps\\scoop\\core\\apps\\nodejs\\current\\node_modules\\npm\\node_modules\\node-gyp\\bin\\node-gyp.js\" \"rebuild\"
gyp ERR! cwd C:\data\projects_go\flogo-web\node_modules\bufferutil

Fabián Castillo

@fcastill

@anborg Does this happen when running yarn install? Or is it from another command? I’m seeing something similar (in Mac) during yarn install when I use NodeJS v12 and NodeJS v14. However, it’s only a warning about an optional dependency and I can run the app. I can see in your logs that you’re using NodeJS v14.8.0, is there a chance you can downgrade to Node v10 and try?

anborg

@anborg

@fcastill , Right. error was during "yarn install" with master branch on windows.

anborg

@anborg

Is there a component for "Watch folder" if a new file is added, trigger a flow, with that file content as input?

Fabián Castillo

@fcastill

I think we don’t have an official trigger for that but I found some implementations for file watcher triggers from the Flogo comunity in Github https://github.com/search?q=flogo+watcher&type=code

Milos Veljkovic

@milosveljkovic

Any suggestion for solving this error: Post http://localhost:5000/api/arduino/sendData: dial tcp 127.0.0.1:5000: connect: connection refused
I try to do REST(Post) from FLOGO to Asp.Net core ... any ideas?

Samip Kothari

@skothari-tibco

I think it should be like any other connection refused issue. You can start by calling the service not from flogo but from postman itself. Check if the port is open. Check if it has been configured to aceept connections and so forth.

Mark Mussett

@mmussett

I’d say the issue is down to socket binding on the wrong network. Check which network the socket receiver is on. Running something like 'sudo lsof -i -n -P | grep TCP | grep 5000’ will tell you which process (if any) and network they’re listening on.

x0rzkov

@x0rzkov

Hi guys, is it possible to aggregate a json response from parallel requests to a set of restful apis (like krakend) but with flogo ? alt

4 replies

Samip Kothari

@skothari-tibco

https://github.com/project-flogo/stream/tree/master/activity/aggregate

3 replies

@x0rzkov

Reid Lai

@reidlai

[Subject][Please reply to thread] I have alread added grpc trigger in flow and got runtime error "gRPC server services not registered” when I started my flow in docker. Then I use protoc to generate my grpc stub. Should I modify main.go to create gRPC server? Or is there some pre-built service from project-flogo can help me bring up grpc server? Thanks for your advice

Tracy Li

@lixingwang

@reidlai grpc trigger is an shim trigger so it should already generated all nesscery file when you build from cli.

@reidlai Are you trying on flogo-web UI right?

6 replies

Jörg Grote

@JGrotex

searching for a Flogo IMAP Trigger - listening for newly incoming Emails, anyone aware of something like this?

Samip Kothari

@skothari-tibco

Can you check if the imports.go file in the app/src contains grpc import?

@JGrotex

Reid Lai

@reidlai

in project-flogo/cli source code, i found api/build.go will call common.BuildPreProcessors() to create empty array of PreProcessors….now I need to find a way to use build.go to call “git submodule update —init” using preprocessor before build shim trigger. Is there any example showing how to create preProcessor?

1 reply

Reid Lai

@reidlai

Dear All I have built embeddedapp.go and shim trigger also geneate necessary pb.go and grpc.go. Then what should i do next to build binary and deploy in Docker?

1 reply

Reid Lai

@reidlai

Guys, when we talk about CI, we usually run local unit test (without server deployed). However when we build our custom trigger and activities with Flogo, we usually need to plug with different backend like MongoDB, MinIO, Elasticsearch, etc…we usually call different backend SDK to prove our trigger/activity method or function working….without server deloyed locally, do we need to spend effort to develop backend mock object? Or is there any faster. and easier method to test our integration code with backend sdk/api? Thanks for your advice

Tracy Li

@lixingwang

@reidlai Today we don’t have easier way to Mock third part servers. what we does for this kinds of use cases we normally do: Using script to start test server over docker or a test env which running test cases after that stop server/ clean up server.

Reid Lai

@reidlai

@lixingwang got it. Just found few mock solution 🤗

Reid Lai

@reidlai

Now I need to run local end2end test is there any way i can run flogo app in test suite setup?

1 reply

Yueming Xu

@yxuco

The flogo cheesecake tutorial is based on old Flogo APIs. I wonder if the new Flogo core supports something similar, or I should ignore that way of using Flogo? https://tibcosoftware.github.io/flogo/labs/cheesecake-service/

Tracy Li

@lixingwang

@yxuco I think yes, You can take a look here github.com/project-flogo/core/api

1 reply

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