Writing the commit no to a text file

[nturgut]

Writing the commit no to a text file. This will be used for ref number to send the drones in the web tests: https://devops-console-oss.corp.google.com/flutter/recipes/+/master:recipes/engine/web_engine_framework.py;l=137

I initially thought I can use one of the library calls to get the commit no we synced using the API. However I couldn't find a method for it.

other tried methods:

• Using the stepData (or using the stdout directly) both methods failed since we are also printing other important information to the logs during the script. StepData converts the out value to a json. Our other logs (such as flutter version) corrupts the json format.
• Using an env variable. We weren't able to read this variable back in the recipe using env['name']

Usage inside the recipe:

ref = api.file.read_text('read commit no', commit_no_file, 'b6efc758213fdfffee1234465')

[christopherfujino]

Is web_engine_framework.py what we run on the drones?

Nevermind, I can see that that recipe is scheduling the builds.

[christopherfujino]

LGTM

[nturgut]

Is web_engine_framework.py what we run on the drones?

Nevermind, I can see that that recipe is scheduling the builds.

Yes, you are right, that recipe invokes the flutter_drone.py for the shards :)

[nturgut]

hmmm the idea didn't worked. accessing environment using env['FLUTTER_REF'] didn't work. I'll update the PR once I find a solution: https://luci-milo.appspot.com/raw/build/logs.chromium.org/flutter/led/nurhan_google.com/8f6fab731fab383b8156b68f859f3175a916e13821ec2c8cb56bedd12502f008/+/annotations

[christopherfujino]

hmmm the idea didn't worked. accessing environment using env['FLUTTER_REF'] didn't work. I'll update the PR once I find a solution: https://luci-milo.appspot.com/raw/build/logs.chromium.org/flutter/led/nurhan_google.com/8f6fab731fab383b8156b68f859f3175a916e13821ec2c8cb56bedd12502f008/+/annotations

how about echoing to stdout and then grabbing that from the from the recipe?

[nturgut]

hmmm the idea didn't worked. accessing environment using env['FLUTTER_REF'] didn't work. I'll update the PR once I find a solution: https://luci-milo.appspot.com/raw/build/logs.chromium.org/flutter/led/nurhan_google.com/8f6fab731fab383b8156b68f859f3175a916e13821ec2c8cb56bedd12502f008/+/annotations

how about echoing to stdout and then grabbing that from the from the recipe?

I tried echoing and the StepData (which consumes the echo to a json object). Using these methods prevent me from printing multiple things to the stdout such as the steps we run or the flutter version. So I implemented the other method we discussed (writing to a file).

[christopherfujino]

lgtm