fix(server): log error when file loading or preprocessing fails#3540
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johnjbarton merged 1 commit intokarma-runner:masterfrom Aug 10, 2020
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✅ Build karma 317 completed (commit 543fec5d6e by @matz3) |
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✅ Build karma 2715 completed (commit 543fec5d6e by @matz3) |
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✅ Build karma 316 completed (commit 1f7909afa6 by @matz3) |
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Added some comment about the background / context of this fix |
johnjbarton
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I'm a bit worried that some "normal error" condition will result in lots of logging, but let's see.
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Thanks, sorry for the delay. |
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# [5.2.0](v5.1.1...v5.2.0) (2020-08-31) ### Bug Fixes * **client:** avoid race between execute and clearContext ([#3452](#3452)) ([8bc5b46](8bc5b46)), closes [#3424](#3424) * **client:** check in bundled client code into version control ([#3524](#3524)) ([6cd5a3b](6cd5a3b)), closes [/github.com/karma-runner/karma/commit/f5521df7df5cd1201b5dce28dc4e326b1ffc41fd#commitcomment-38967493](https://github.com//github.com/karma-runner/karma/commit/f5521df7df5cd1201b5dce28dc4e326b1ffc41fd/issues/commitcomment-38967493) * **dependencies:** update dependencies ([#3543](#3543)) ([5db46b7](5db46b7)) * **docs:** Update 03-how-it-works.md ([#3539](#3539)) ([e7cf7b1](e7cf7b1)) * **server:** log error when file loading or preprocessing fails ([#3540](#3540)) ([fc2fd61](fc2fd61)) ### Features * **server:** allow 'exit' listeners to set exit code ([#3541](#3541)) ([7a94d33](7a94d33))
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🎉 This PR is included in version 5.2.0 🎉 The release is available on: Your semantic-release bot 📦🚀 |
anthony-redFox
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# [5.2.0](karma-runner/karma@v5.1.1...v5.2.0) (2020-08-31) ### Bug Fixes * **client:** avoid race between execute and clearContext ([karma-runner#3452](karma-runner#3452)) ([8bc5b46](karma-runner@8bc5b46)), closes [karma-runner#3424](karma-runner#3424) * **client:** check in bundled client code into version control ([karma-runner#3524](karma-runner#3524)) ([6cd5a3b](karma-runner@6cd5a3b)), closes [/github.com/karma-runner/karma/commit/f5521df7df5cd1201b5dce28dc4e326b1ffc41fd#commitcomment-38967493](https://github.com//github.com/karma-runner/karma/commit/f5521df7df5cd1201b5dce28dc4e326b1ffc41fd/issues/commitcomment-38967493) * **dependencies:** update dependencies ([karma-runner#3543](karma-runner#3543)) ([5db46b7](karma-runner@5db46b7)) * **docs:** Update 03-how-it-works.md ([karma-runner#3539](karma-runner#3539)) ([e7cf7b1](karma-runner@e7cf7b1)) * **server:** log error when file loading or preprocessing fails ([karma-runner#3540](karma-runner#3540)) ([fc2fd61](karma-runner@fc2fd61)) ### Features * **server:** allow 'exit' listeners to set exit code ([karma-runner#3541](karma-runner#3541)) ([7a94d33](karma-runner@7a94d33))
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Previously the error has been fully ignored.
Context / background
This has been detected within SAP/openui5 where we start a local server in parallel to karma. When upgrading to karma v5 we faced some issues mainly on Windows. It turned out that the root cause is
EMFILE, too many open files, probably because internal timings have changed by switching from bluebird to native Promises.As the actual error hasn't been logged, it took me some time to find out where the error comes from.
We solved the problem on our side by starting the server as part of an async framework plugin, instead of just
requireing it from thekarma.conf.js(see UI5/openui5@e77a49a). This ensures that it doesn't get executed while karma is preprocessing all the project files. IMO it's anyway a better approach as it is ensured that the server is up and running before karma starts.