SlackUploadFile for channel threads are not working after latest update.

[timja]

Please provide more information on how to reproduce, your slack plugin version, your build log from when running the upload and system logs.

Have you added the new required scopes: https://github.com/jenkinsci/slack-plugin/releases/tag/711.v41060f587001

[raghavanrrs]

Please provide more information on how to reproduce, your slack plugin version, your build log from when running the upload and system logs.

Have you added the new required scopes: https://github.com/jenkinsci/slack-plugin/releases/tag/711.v41060f587001

Issue: Unable to upload files to User channel (userID resolved from commits) threads, but can able to upload files to Group channels in a thread Slack plugin version: 714.v62ffe7c796cd

Jenkins version: Jenkins 2.454 Build Log: [Pipeline] slackUploadFile ERROR: Failed uploading file to slack, channel not found: :1715237120.817939

Method: slackUploadFile(channel: "${env.userId}" + ":" + slackUserResponse.ts , filePath: "changelog.txt", initialComment: "<@$userId> Detailed summary of changes for Build ${env.BUILD_NUMBER}.")

Bot Permissions: chat:write chat:write.customize chat:write.public files:write incoming-webhook channels:read groups:read files:read users:read users:read.email

[timja]

Hi, apologies for this.

It appears this was an unintentional feature that Slack wasn't aware of

https://github.com/slackapi/python-slack-sdk/issues/1326#issuecomment-1424986841

I've tested the workaround they suggested in https://github.com/jenkinsci/slack-plugin/pull/967 It will work after a minor change I made to fallback to try what the user passed in if it can't be found in the channel ID cache.

You will need to adapt your code to message a user first then user the channel ID from the response, (see the updated docs in the PR)

[ctrongminh]

Hi @timja , Could you please help to share your bot testing API scope permission ?

I'm using the below code as the testing in https://github.com/jenkinsci/slack-plugin/pull/967, but got the error channel_not_found

def slackResponse = slackSend channel: 'U05052SAR54', message: 'Hey', sendAsText: true slackUploadFile filePath: "*.txt", channel: slackResponse.channelId

Slack upload may have failed. Response: {"ok":false,"error":"channel_not_found"}

Please note: I already modified the channel ID before posting, Thank you.

[timja]

That Hey message successfully sent a message to the users private channel?

My testing bot has the config from the manifest here: https://github.com/jenkinsci/slack-plugin#creating-your-app

[ctrongminh]

Hi @timja ,

Yes, the "Hey" is successfully sent to Slackbot of the user, and then the it timeouts for the slackUploadFile command (5-6 minutes).

With the file.upload V1, we received the "Hey" in Slackbot, and the files are sent in the Jenkins app (you can see in the image, there are Slackbot and Jenkins app, which is separated, not as one),

Full error message for the slackUploadFile command

Using dirname=/var/lib/jenkins/workspace/test and includeMask=*.txt
Adding file /var/lib/jenkins/workspace/test/test.txt
ERROR: Failed uploading file to slack
Slack upload may have failed. Response: {"ok":false,"error":"channel_not_found"}
Failed to complete uploading file to Slack

Slack plugin version: 715.v1cfed1b_9c63c

[timja]

can you print the channel ID I think it should start with a D? after slackSend and before uploading the file

something like:

echo slackResponse.id

or

sh "echo $slackResponse.id"

[ctrongminh]

yes, the slackResponse.channelId output to the ID which starts with D, for the user, it starts with U. I even input the channelId to the slackUploadFile but still, got the channel_not_found

def slackResponse = slackSend channel: 'U05052SAR54', message: 'Hey', sendAsText: true
slackUploadFile filePath: "*.txt", channel: 'D050861H9N1'

[timja]

Hi @timja ,

With the file.upload V1, we received the "Hey" in Slackbot, and the files are sent in the Jenkins app (you can see in the image, there are Slackbot and Jenkins app, which is separated, not as one),

Try change it to this:

def slackResponse = slackSend channel: 'U05052SAR54', message: 'Hey', sendAsText: true, botUser: true
slackUploadFile filePath: "*.txt", channel: slackResponse.id

[raghavanrrs]

Hi @timja , With the file.upload V1, we received the "Hey" in Slackbot, and the files are sent in the Jenkins app (you can see in the image, there are Slackbot and Jenkins app, which is separated, not as one),

Try change it to this:

def slackResponse = slackSend channel: 'U05052SAR54', message: 'Hey', sendAsText: true, botUser: true
slackUploadFile filePath: "*.txt", channel: slackResponse.id

throws error:

Also: org.jenkinsci.plugins.workflow.actions.ErrorAction$ErrorId: dbab4939-33b7-4f42-a386-a34075775b95 groovy.lang.MissingPropertyException: No such field found: field jenkins.plugins.slack.workflow.SlackResponse id

Also how to print slackResponse in user friendly format??

[timja]

ah sorry channelId.

def slackResponse = slackSend channel: 'U05052SAR54', message: 'Hey', sendAsText: true, botUser: true
slackUploadFile filePath: "*.txt", channel: slackResponse.channelId

[ctrongminh]

Hi @timja ,

I think I found the root cause,

In our case, when we use slackSend to send message to the user, the chat is sent from SlackBot to the user, which results to the channel Id of the SlackBot.

However, for the slackUploadFile to work, we need to input the channel Id of the Jenkins Apps for that user. I tested it by manually inputting the Jenkins App Channel Id, for my user to the slackUploadFile.

With the checkbox "Custom slack app bot user", message will be sent to SlackBot. However, if we uncheck, the connection will fail

[timja]

If you send as custom slack app bot user then it should come from the app not slackbot.

That's what I was trying to test in the last sample I sent to see if explicitly setting it to true makes it work.

[ctrongminh]

thank you, let me try it with flag, I miss that,

"botUser: true"

[ctrongminh]

it still failed at slackUploadFile step with setting "botUser: true" at the slackSend, as the slackResponse.channelId resolved to the SlackBot's channel Id.

In the description of "Custom slack app bot user", it says the chat will be sent as @slackbot.

"If the notification will be sent to a user via direct message, the default integration sends it via @slackbot, use this option if you want to send messages via a bot user"

[MatthewBooth]

I'm having a similar issue here, but instead of a user, I'm using a thread posted in a channel, using: slackResponse.threadId as the channel: value.

The response is the same:

Slack upload may have failed. Response: {"ok":false,"error":"channel_not_found"}
10:40:37  Failed to complete uploading file to Slack

[raghavanrrs]

I'm having a similar issue here, but instead of a user, I'm using a thread posted in a channel, using: slackResponse.threadId as the channel: value.

The response is the same:

Slack upload may have failed. Response: {"ok":false,"error":"channel_not_found"}
10:40:37  Failed to complete uploading file to Slack

for Reply to a channel thread we are using slackResponse.ts which works in our case.

[MatthewBooth]

I'm having a similar issue here, but instead of a user, I'm using a thread posted in a channel, using: slackResponse.threadId as the channel: value. The response is the same:

Slack upload may have failed. Response: {"ok":false,"error":"channel_not_found"}
10:40:37  Failed to complete uploading file to Slack

for Reply to a channel thread we are using slackResponse.ts which works in our case.

Thanks, I'll try that. We mostly upload into threads.

Sorry to jump in on your issue, but it seems quite related.

I actually just tried this

sh("echo hey > file.txt")
slackUploadFile(filePath: 'file.txt', channel: 'cloud-engineering')

Straight into a channel and the result is:

[Pipeline] sh
 + echo hey
[Pipeline] slackUploadFile
ERROR: Failed uploading file to slack
[Pipeline] }

EDIT:

This also didn't work:

sh("echo hey > file.txt")
def slackResponse = slackSend(channel: "cloud-engineering", message: "Here is the primary message")
slackSend(channel: slackResponse.threadId, message: "Thread reply #1")
slackSend(channel: slackResponse.threadId, message: "Thread reply #2")
slackUploadFile(filePath: 'file.txt', channel: slackResponse.ts)

Which results in:

[Pipeline] sh
 + echo hey
 [Pipeline] slackSend
 Slack Send Pipeline step running, values are - baseUrl: <empty>, teamDomain: SNIP, channel: cloud-engineering, color: <empty>, botUser: true, tokenCredentialId: SNIP, notifyCommitters: false, iconEmoji: <empty>, username: <empty>, timestamp: <empty>
 [Pipeline] slackSend
 Slack Send Pipeline step running, values are - baseUrl: <empty>, teamDomain: SNIP, channel: C01RT3GFUV6:1715681693.932169, color: <empty>, botUser: true, tokenCredentialId: SNIP, notifyCommitters: false, iconEmoji: <empty>, username: <empty>, timestamp: <empty>
 [Pipeline] slackSend
 Slack Send Pipeline step running, values are - baseUrl: <empty>, teamDomain: SNIP, channel: C01RT3GFUV6:1715681693.932169, color: <empty>, botUser: true, tokenCredentialId: SNIP, notifyCommitters: false, iconEmoji: <empty>, username: <empty>, timestamp: <empty>
 [Pipeline] slackUploadFile
 ERROR: Failed uploading file to slack

[timja]

For threads this works for me:

  sh "echo hey > blah.txt"
  def slackResponse = slackSend channel: '#jenkins-slack-plugin-testing', message: "hello"

  slackUploadFile channel: "#jenkins-slack-plugin-testing:${slackResponse.ts}", filePath: 'blah.txt', initialComment: '*Full changes*:'

[timja]

Which is documented here: https://github.com/jenkinsci/slack-plugin#threads-support

[MatthewBooth]

Still no joy :/

This resulted in a channel not found message:

def slackResponse = slackSend(channel: "cloud-engineering", message: "Here is the primary message")
slackSend(channel: slackResponse.threadId, message: "Thread reply #1")
slackSend(channel: slackResponse.threadId, message: "Thread reply #2")
slackUploadFile(filePath: 'file.txt', channel: "cloud-engineering:" + slackResponse.ts)

 + echo hey
 [Pipeline] slackSend
 Slack Send Pipeline step running, values are - baseUrl: <empty>, teamDomain: SNIP, channel: cloud-engineering, color: <empty>, botUser: true, tokenCredentialId: SNIP, notifyCommitters: false, iconEmoji: <empty>, username: <empty>, timestamp: <empty>
 [Pipeline] slackSend
 Slack Send Pipeline step running, values are - baseUrl: <empty>, teamDomain: SNIP, channel: C01RT3GFUV6:1715683388.219919, color: <empty>, botUser: true, tokenCredentialId: SNIP, notifyCommitters: false, iconEmoji: <empty>, username: <empty>, timestamp: <empty>
 [Pipeline] slackSend
 Slack Send Pipeline step running, values are - baseUrl: <empty>, teamDomain: SNIP, channel: C01RT3GFUV6:1715683388.219919, color: <empty>, botUser: true, tokenCredentialId: SNIP, notifyCommitters: false, iconEmoji: <empty>, username: <empty>, timestamp: <empty>
 [Pipeline] slackUploadFile
 Using dirname=/home/ec2-user/workspace/TestJenkinsSandbox and includeMask=file.txt
 Adding file /home/ec2-user/workspace/TestJenkinsSandbox/file.txt
 ERROR: Failed uploading file to slack
 Slack upload may have failed. Response: {"ok":false,"error":"channel_not_found"}
 Failed to complete uploading file to Slack

I also tried threadId instead of ts, which just produced:

 ERROR: Failed uploading file to slack

[timja]

Can you show an example that matches what I sent?

  slackUploadFile channel: "#your-channel:${slackResponse.ts}", filePath: 'blah.txt', initialComment: '*Full changes*:'

[MatthewBooth]

Sure :)

sh("echo hey > blah.txt")

def slackResponse = slackSend(channel: "cloud-engineering", message: "Here is the primary message")
slackSend(channel: slackResponse.threadId, message: "Thread reply #1")
slackSend(channel: slackResponse.threadId, message: "Thread reply #2")

slackUploadFile channel: "#cloud-engineering:${slackResponse.ts}", filePath: 'blah.txt', initialComment: '*Full changes*:'

[Pipeline] sh
 + echo hey
 [Pipeline] slackSend
 Slack Send Pipeline step running, values are - baseUrl: <empty>, teamDomain: SNIP, channel: cloud-engineering, color: <empty>, botUser: true, tokenCredentialId: SNIP, notifyCommitters: false, iconEmoji: <empty>, username: <empty>, timestamp: <empty>
 [Pipeline] slackSend
 Slack Send Pipeline step running, values are - baseUrl: <empty>, teamDomain: SNIP, channel: C01RT3GFUV6:1715684261.131669, color: <empty>, botUser: true, tokenCredentialId: SNIP, notifyCommitters: false, iconEmoji: <empty>, username: <empty>, timestamp: <empty>
 [Pipeline] slackSend
 Slack Send Pipeline step running, values are - baseUrl: <empty>, teamDomain: SNIP, channel: C01RT3GFUV6:1715684261.131669, color: <empty>, botUser: true, tokenCredentialId: SNIP, notifyCommitters: false, iconEmoji: <empty>, username: <empty>, timestamp: <empty>
 [Pipeline] slackUploadFile
 Using dirname=/home/ec2-user/workspace/TestJenkinsSandbox and includeMask=blah.txt
 Adding file /home/ec2-user/workspace/TestJenkinsSandbox/blah.txt
 ERROR: Failed uploading file to slack
 [Pipeline] }

 [Pipeline] // ansiColor
 [Pipeline] }
 Slack upload may have failed. Response: {"ok":false,"error":"channel_not_found"}
 Failed to complete uploading file to Slack

Apologies, I haven't mentioned yet, but I'm using 715.v1cfed1b_9c63c with the plugin and 2.440.3 with Jenkins.

[timja]

There doesn't happen to be anything useful in the system logs?

[MatthewBooth]

There doesn't happen to be anything useful in the system logs?

Ahh, ha!

Couldn't convert channel name to ID in Slack: {"needed":"channels:read,groups:read,mpim:read,im:read","provided":"chat:write,files:write,reactions:write,users:read,users:read.email","ok":false,"error":"missing_scope"}

[timja]

hmm damn, I tried to make sure those logs all made it into the build log, =/.

[MatthewBooth]

hmm damn, I tried to make sure those logs all made it into the build log, =/.

No worries, I feel silly that I didn't think of that myself! I've updated the scopes on the bot user/app and will try again.

It makes sense now, as even a file upload to a channel was also failing.

EDIT:

Yep, that's working now. Thanks @raghavanrrs and @timja

[raghavanrrs]

@timja how to print the slacksend response in user-friendly. As currently we are getting only the hashed values.

[timja]

sh "echo $slackResponse.channelId $slackResponse.ts"

or sh "echo $slackResponse.threadId"