[Synthetics] Fix issue where heatmap UI crashes on undefined histogram data #192508
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…m data (elastic#192508) ## Summary Recently, [we fixed](elastic#184177) an [issue](elastic#180076) where the heatmap data on the detail and monitor history pages would not fill up. A side effect of this fix was a new regression that caused certain rarer cases to see the page crash because of an unhandled case of calling a function on a potentially-null object; our histogram data used to populate this heatmap can be `undefined` in certain cases. This patch introduces a change that will handle this case, and adds unit tests for the module in question. ### Checklist Delete any items that are not applicable to this PR. - [ ] Any text added follows [EUI's writing guidelines](https://elastic.github.io/eui/#/guidelines/writing), uses sentence case text and includes [i18n support](https://github.com/elastic/kibana/blob/main/packages/kbn-i18n/README.md) - [ ] [Documentation](https://www.elastic.co/guide/en/kibana/master/development-documentation.html) was added for features that require explanation or tutorials - [ ] [Unit or functional tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html) were updated or added to match the most common scenarios - [ ] [Flaky Test Runner](https://ci-stats.kibana.dev/trigger_flaky_test_runner/1) was used on any tests changed - [ ] Any UI touched in this PR is usable by keyboard only (learn more about [keyboard accessibility](https://webaim.org/techniques/keyboard/)) - [ ] Any UI touched in this PR does not create any new axe failures (run axe in browser: [FF](https://addons.mozilla.org/en-US/firefox/addon/axe-devtools/), [Chrome](https://chrome.google.com/webstore/detail/axe-web-accessibility-tes/lhdoppojpmngadmnindnejefpokejbdd?hl=en-US)) - [ ] If a plugin configuration key changed, check if it needs to be allowlisted in the cloud and added to the [docker list](https://github.com/elastic/kibana/blob/main/src/dev/build/tasks/os_packages/docker_generator/resources/base/bin/kibana-docker) - [ ] This renders correctly on smaller devices using a responsive layout. (You can test this [in your browser](https://www.browserstack.com/guide/responsive-testing-on-local-server)) - [ ] This was checked for [cross-browser compatibility](https://www.elastic.co/support/matrix#matrix_browsers) ### Risk Matrix Delete this section if it is not applicable to this PR. Before closing this PR, invite QA, stakeholders, and other developers to identify risks that should be tested prior to the change/feature release. When forming the risk matrix, consider some of the following examples and how they may potentially impact the change: | Risk | Probability | Severity | Mitigation/Notes | |---------------------------|-------------|----------|-------------------------| | Multiple Spaces—unexpected behavior in non-default Kibana Space. | Low | High | Integration tests will verify that all features are still supported in non-default Kibana Space and when user switches between spaces. | | Multiple nodes—Elasticsearch polling might have race conditions when multiple Kibana nodes are polling for the same tasks. | High | Low | Tasks are idempotent, so executing them multiple times will not result in logical error, but will degrade performance. To test for this case we add plenty of unit tests around this logic and document manual testing procedure. | | Code should gracefully handle cases when feature X or plugin Y are disabled. | Medium | High | Unit tests will verify that any feature flag or plugin combination still results in our service operational. | | [See more potential risk examples](https://github.com/elastic/kibana/blob/main/RISK_MATRIX.mdx) | ### For maintainers - [ ] This was checked for breaking API changes and was [labeled appropriately](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process) --------- Co-authored-by: Shahzad <[email protected]> (cherry picked from commit da2f7f6)
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…stogram data (#192508) (#193154) # Backport This will backport the following commits from `main` to `8.x`: - [[Synthetics] Fix issue where heatmap UI crashes on undefined histogram data (#192508)](#192508) <!--- Backport version: 9.4.3 --> ### Questions ? Please refer to the [Backport tool documentation](https://github.com/sqren/backport) <!--BACKPORT [{"author":{"name":"Justin Kambic","email":"[email protected]"},"sourceCommit":{"committedDate":"2024-09-17T12:08:51Z","message":"[Synthetics] Fix issue where heatmap UI crashes on undefined histogram data (#192508)\n\n## Summary\r\n\r\nRecently, [we fixed](#184177) an\r\n[issue](#180076) where the\r\nheatmap data on the detail and monitor history pages would not fill up.\r\n\r\nA side effect of this fix was a new regression that caused certain rarer\r\ncases to see the page crash because of an unhandled case of calling a\r\nfunction on a potentially-null object; our histogram data used to\r\npopulate this heatmap can be `undefined` in certain cases.\r\n\r\nThis patch introduces a change that will handle this case, and adds unit\r\ntests for the module in question.\r\n\r\n\r\n### Checklist\r\n\r\nDelete any items that are not applicable to this PR.\r\n\r\n- [ ] Any text added follows [EUI's writing\r\nguidelines](https://elastic.github.io/eui/#/guidelines/writing), uses\r\nsentence case text and includes [i18n\r\nsupport](https://github.com/elastic/kibana/blob/main/packages/kbn-i18n/README.md)\r\n- [ ]\r\n[Documentation](https://www.elastic.co/guide/en/kibana/master/development-documentation.html)\r\nwas added for features that require explanation or tutorials\r\n- [ ] [Unit or functional\r\ntests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)\r\nwere updated or added to match the most common scenarios\r\n- [ ] [Flaky Test\r\nRunner](https://ci-stats.kibana.dev/trigger_flaky_test_runner/1) was\r\nused on any tests changed\r\n- [ ] Any UI touched in this PR is usable by keyboard only (learn more\r\nabout [keyboard accessibility](https://webaim.org/techniques/keyboard/))\r\n- [ ] Any UI touched in this PR does not create any new axe failures\r\n(run axe in browser:\r\n[FF](https://addons.mozilla.org/en-US/firefox/addon/axe-devtools/),\r\n[Chrome](https://chrome.google.com/webstore/detail/axe-web-accessibility-tes/lhdoppojpmngadmnindnejefpokejbdd?hl=en-US))\r\n- [ ] If a plugin configuration key changed, check if it needs to be\r\nallowlisted in the cloud and added to the [docker\r\nlist](https://github.com/elastic/kibana/blob/main/src/dev/build/tasks/os_packages/docker_generator/resources/base/bin/kibana-docker)\r\n- [ ] This renders correctly on smaller devices using a responsive\r\nlayout. (You can test this [in your\r\nbrowser](https://www.browserstack.com/guide/responsive-testing-on-local-server))\r\n- [ ] This was checked for [cross-browser\r\ncompatibility](https://www.elastic.co/support/matrix#matrix_browsers)\r\n\r\n\r\n### Risk Matrix\r\n\r\nDelete this section if it is not applicable to this PR.\r\n\r\nBefore closing this PR, invite QA, stakeholders, and other developers to\r\nidentify risks that should be tested prior to the change/feature\r\nrelease.\r\n\r\nWhen forming the risk matrix, consider some of the following examples\r\nand how they may potentially impact the change:\r\n\r\n| Risk | Probability | Severity | Mitigation/Notes |\r\n\r\n|---------------------------|-------------|----------|-------------------------|\r\n| Multiple Spaces—unexpected behavior in non-default Kibana Space.\r\n| Low | High | Integration tests will verify that all features are still\r\nsupported in non-default Kibana Space and when user switches between\r\nspaces. |\r\n| Multiple nodes—Elasticsearch polling might have race conditions\r\nwhen multiple Kibana nodes are polling for the same tasks. | High | Low\r\n| Tasks are idempotent, so executing them multiple times will not result\r\nin logical error, but will degrade performance. To test for this case we\r\nadd plenty of unit tests around this logic and document manual testing\r\nprocedure. |\r\n| Code should gracefully handle cases when feature X or plugin Y are\r\ndisabled. | Medium | High | Unit tests will verify that any feature flag\r\nor plugin combination still results in our service operational. |\r\n| [See more potential risk\r\nexamples](https://github.com/elastic/kibana/blob/main/RISK_MATRIX.mdx) |\r\n\r\n\r\n### For maintainers\r\n\r\n- [ ] This was checked for breaking API changes and was [labeled\r\nappropriately](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)\r\n\r\n---------\r\n\r\nCo-authored-by: Shahzad <[email protected]>","sha":"da2f7f6dae265e29713e5c6586c542499b03bcd6","branchLabelMapping":{"^v9.0.0$":"main","^v8.16.0$":"8.x","^v(\\d+).(\\d+).\\d+$":"$1.$2"}},"sourcePullRequest":{"labels":["bug","release_note:fix","v9.0.0","ci:project-deploy-observability","Team:obs-ux-management","v8.16.0"],"title":"[Synthetics] Fix issue where heatmap UI crashes on undefined histogram data","number":192508,"url":"https://github.com/elastic/kibana/pull/192508","mergeCommit":{"message":"[Synthetics] Fix issue where heatmap UI crashes on undefined histogram data (#192508)\n\n## Summary\r\n\r\nRecently, [we fixed](#184177) an\r\n[issue](#180076) where the\r\nheatmap data on the detail and monitor history pages would not fill up.\r\n\r\nA side effect of this fix was a new regression that caused certain rarer\r\ncases to see the page crash because of an unhandled case of calling a\r\nfunction on a potentially-null object; our histogram data used to\r\npopulate this heatmap can be `undefined` in certain cases.\r\n\r\nThis patch introduces a change that will handle this case, and adds unit\r\ntests for the module in question.\r\n\r\n\r\n### Checklist\r\n\r\nDelete any items that are not applicable to this PR.\r\n\r\n- [ ] Any text added follows [EUI's writing\r\nguidelines](https://elastic.github.io/eui/#/guidelines/writing), uses\r\nsentence case text and includes [i18n\r\nsupport](https://github.com/elastic/kibana/blob/main/packages/kbn-i18n/README.md)\r\n- [ ]\r\n[Documentation](https://www.elastic.co/guide/en/kibana/master/development-documentation.html)\r\nwas added for features that require explanation or tutorials\r\n- [ ] [Unit or functional\r\ntests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)\r\nwere updated or added to match the most common scenarios\r\n- [ ] [Flaky Test\r\nRunner](https://ci-stats.kibana.dev/trigger_flaky_test_runner/1) was\r\nused on any tests changed\r\n- [ ] Any UI touched in this PR is usable by keyboard only (learn more\r\nabout [keyboard accessibility](https://webaim.org/techniques/keyboard/))\r\n- [ ] Any UI touched in this PR does not create any new axe failures\r\n(run axe in browser:\r\n[FF](https://addons.mozilla.org/en-US/firefox/addon/axe-devtools/),\r\n[Chrome](https://chrome.google.com/webstore/detail/axe-web-accessibility-tes/lhdoppojpmngadmnindnejefpokejbdd?hl=en-US))\r\n- [ ] If a plugin configuration key changed, check if it needs to be\r\nallowlisted in the cloud and added to the [docker\r\nlist](https://github.com/elastic/kibana/blob/main/src/dev/build/tasks/os_packages/docker_generator/resources/base/bin/kibana-docker)\r\n- [ ] This renders correctly on smaller devices using a responsive\r\nlayout. (You can test this [in your\r\nbrowser](https://www.browserstack.com/guide/responsive-testing-on-local-server))\r\n- [ ] This was checked for [cross-browser\r\ncompatibility](https://www.elastic.co/support/matrix#matrix_browsers)\r\n\r\n\r\n### Risk Matrix\r\n\r\nDelete this section if it is not applicable to this PR.\r\n\r\nBefore closing this PR, invite QA, stakeholders, and other developers to\r\nidentify risks that should be tested prior to the change/feature\r\nrelease.\r\n\r\nWhen forming the risk matrix, consider some of the following examples\r\nand how they may potentially impact the change:\r\n\r\n| Risk | Probability | Severity | Mitigation/Notes |\r\n\r\n|---------------------------|-------------|----------|-------------------------|\r\n| Multiple Spaces—unexpected behavior in non-default Kibana Space.\r\n| Low | High | Integration tests will verify that all features are still\r\nsupported in non-default Kibana Space and when user switches between\r\nspaces. |\r\n| Multiple nodes—Elasticsearch polling might have race conditions\r\nwhen multiple Kibana nodes are polling for the same tasks. | High | Low\r\n| Tasks are idempotent, so executing them multiple times will not result\r\nin logical error, but will degrade performance. To test for this case we\r\nadd plenty of unit tests around this logic and document manual testing\r\nprocedure. |\r\n| Code should gracefully handle cases when feature X or plugin Y are\r\ndisabled. | Medium | High | Unit tests will verify that any feature flag\r\nor plugin combination still results in our service operational. |\r\n| [See more potential risk\r\nexamples](https://github.com/elastic/kibana/blob/main/RISK_MATRIX.mdx) |\r\n\r\n\r\n### For maintainers\r\n\r\n- [ ] This was checked for breaking API changes and was [labeled\r\nappropriately](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)\r\n\r\n---------\r\n\r\nCo-authored-by: Shahzad <[email protected]>","sha":"da2f7f6dae265e29713e5c6586c542499b03bcd6"}},"sourceBranch":"main","suggestedTargetBranches":["8.x"],"targetPullRequestStates":[{"branch":"main","label":"v9.0.0","branchLabelMappingKey":"^v9.0.0$","isSourceBranch":true,"state":"MERGED","url":"https://github.com/elastic/kibana/pull/192508","number":192508,"mergeCommit":{"message":"[Synthetics] Fix issue where heatmap UI crashes on undefined histogram data (#192508)\n\n## Summary\r\n\r\nRecently, [we fixed](#184177) an\r\n[issue](#180076) where the\r\nheatmap data on the detail and monitor history pages would not fill up.\r\n\r\nA side effect of this fix was a new regression that caused certain rarer\r\ncases to see the page crash because of an unhandled case of calling a\r\nfunction on a potentially-null object; our histogram data used to\r\npopulate this heatmap can be `undefined` in certain cases.\r\n\r\nThis patch introduces a change that will handle this case, and adds unit\r\ntests for the module in question.\r\n\r\n\r\n### Checklist\r\n\r\nDelete any items that are not applicable to this PR.\r\n\r\n- [ ] Any text added follows [EUI's writing\r\nguidelines](https://elastic.github.io/eui/#/guidelines/writing), uses\r\nsentence case text and includes [i18n\r\nsupport](https://github.com/elastic/kibana/blob/main/packages/kbn-i18n/README.md)\r\n- [ ]\r\n[Documentation](https://www.elastic.co/guide/en/kibana/master/development-documentation.html)\r\nwas added for features that require explanation or tutorials\r\n- [ ] [Unit or functional\r\ntests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)\r\nwere updated or added to match the most common scenarios\r\n- [ ] [Flaky Test\r\nRunner](https://ci-stats.kibana.dev/trigger_flaky_test_runner/1) was\r\nused on any tests changed\r\n- [ ] Any UI touched in this PR is usable by keyboard only (learn more\r\nabout [keyboard accessibility](https://webaim.org/techniques/keyboard/))\r\n- [ ] Any UI touched in this PR does not create any new axe failures\r\n(run axe in browser:\r\n[FF](https://addons.mozilla.org/en-US/firefox/addon/axe-devtools/),\r\n[Chrome](https://chrome.google.com/webstore/detail/axe-web-accessibility-tes/lhdoppojpmngadmnindnejefpokejbdd?hl=en-US))\r\n- [ ] If a plugin configuration key changed, check if it needs to be\r\nallowlisted in the cloud and added to the [docker\r\nlist](https://github.com/elastic/kibana/blob/main/src/dev/build/tasks/os_packages/docker_generator/resources/base/bin/kibana-docker)\r\n- [ ] This renders correctly on smaller devices using a responsive\r\nlayout. (You can test this [in your\r\nbrowser](https://www.browserstack.com/guide/responsive-testing-on-local-server))\r\n- [ ] This was checked for [cross-browser\r\ncompatibility](https://www.elastic.co/support/matrix#matrix_browsers)\r\n\r\n\r\n### Risk Matrix\r\n\r\nDelete this section if it is not applicable to this PR.\r\n\r\nBefore closing this PR, invite QA, stakeholders, and other developers to\r\nidentify risks that should be tested prior to the change/feature\r\nrelease.\r\n\r\nWhen forming the risk matrix, consider some of the following examples\r\nand how they may potentially impact the change:\r\n\r\n| Risk | Probability | Severity | Mitigation/Notes |\r\n\r\n|---------------------------|-------------|----------|-------------------------|\r\n| Multiple Spaces—unexpected behavior in non-default Kibana Space.\r\n| Low | High | Integration tests will verify that all features are still\r\nsupported in non-default Kibana Space and when user switches between\r\nspaces. |\r\n| Multiple nodes—Elasticsearch polling might have race conditions\r\nwhen multiple Kibana nodes are polling for the same tasks. | High | Low\r\n| Tasks are idempotent, so executing them multiple times will not result\r\nin logical error, but will degrade performance. To test for this case we\r\nadd plenty of unit tests around this logic and document manual testing\r\nprocedure. |\r\n| Code should gracefully handle cases when feature X or plugin Y are\r\ndisabled. | Medium | High | Unit tests will verify that any feature flag\r\nor plugin combination still results in our service operational. |\r\n| [See more potential risk\r\nexamples](https://github.com/elastic/kibana/blob/main/RISK_MATRIX.mdx) |\r\n\r\n\r\n### For maintainers\r\n\r\n- [ ] This was checked for breaking API changes and was [labeled\r\nappropriately](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)\r\n\r\n---------\r\n\r\nCo-authored-by: Shahzad <[email protected]>","sha":"da2f7f6dae265e29713e5c6586c542499b03bcd6"}},{"branch":"8.x","label":"v8.16.0","branchLabelMappingKey":"^v8.16.0$","isSourceBranch":false,"state":"NOT_CREATED"}]}] BACKPORT--> Co-authored-by: Justin Kambic <[email protected]>
justinkambic
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Oct 8, 2024
## Summary We addressed #180076 recently with these two PRs: - #184177 - #192508 We were seeing a strange error that was difficult to repro, so we put in a best-effort patch that was still ineffective. The reason this issue happens is because in the code it's possible to divide by 0, which yields a value of `Infinity`, which at some point causes our interval value supplied to the server route to be an empty string. This patch will make it so that we never pass a value of 0 to be used in the calculation of bucket sizes in this hook.
kibanamachine
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Oct 8, 2024
## Summary We addressed elastic#180076 recently with these two PRs: - elastic#184177 - elastic#192508 We were seeing a strange error that was difficult to repro, so we put in a best-effort patch that was still ineffective. The reason this issue happens is because in the code it's possible to divide by 0, which yields a value of `Infinity`, which at some point causes our interval value supplied to the server route to be an empty string. This patch will make it so that we never pass a value of 0 to be used in the calculation of bucket sizes in this hook. (cherry picked from commit 560d561)
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Summary
Recently, we fixed an issue where the heatmap data on the detail and monitor history pages would not fill up.
A side effect of this fix was a new regression that caused certain rarer cases to see the page crash because of an unhandled case of calling a function on a potentially-null object; our histogram data used to populate this heatmap can be
undefinedin certain cases.This patch introduces a change that will handle this case, and adds unit tests for the module in question.
Checklist
Delete any items that are not applicable to this PR.
Risk Matrix
Delete this section if it is not applicable to this PR.
Before closing this PR, invite QA, stakeholders, and other developers to identify risks that should be tested prior to the change/feature release.
When forming the risk matrix, consider some of the following examples and how they may potentially impact the change:
For maintainers