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{
  "commit": "a53f41020e59776604ca4fc42efd43fed94def00",
  "tree": "9b1d2e14d3778e7d1f121feca90f7d3a4587aead",
  "parents": [
    "d112131610ad2e37beda5f364e7b3ca7cce7792c"
  ],
  "author": {
    "name": "Ricardo Amador",
    "email": "ricardoamador@google.com",
    "time": "Fri Dec 15 23:48:33 2023 +0000"
  },
  "committer": {
    "name": "CQ Bot Account",
    "email": "flutter-scoped@luci-project-accounts.iam.gserviceaccount.com",
    "time": "Fri Dec 15 23:48:33 2023 +0000"
  },
  "message": "This cl introduces a cache micro manager that will run cleanup primarily for osx_sdk directories but could be used elsewhere to manage clean up on the cache subdirectory level.\n\nAddresses: https://github.com/flutter/flutter/issues/137951 in which it was found that having multiple versions of Xcode was causing significant overhead to runtimes on mac os tests.\n\nThe change here will track packages in a cache for example osx_sdk and keep track of the time in which packages will be removed with a metadata file in the directory.\n* If a package is updated and used the removal date will always be x days (currently 30 days) from the last day it was touched.\n* If a package is not updated it will be determined if it needs to be removed and if so will remove it.\n* Packages FOUND ON disk but NOT IN the file will be added automatically for tracking and removal.\n* Packages NOT FOUND on disk BUT IN the metadata file will be removed from the metadata file.\n\nOne things to note is that we may want to tweak the time that we leave the packages around to something shorter or make it configurable via the ci.yaml. Though I am not sure how often multiple packages are used.\n\nThis tool is unobtrusive and does not aggressively remove files. If you want to reset all package expirations you can simple remove the file from the machine to force it to recalculate the removal dates.\n\nThis does not run as a service and can be added as a step to existing recipes if we need to remove packages causing overhead to other test runtimes.\n\nhttps://ci.chromium.org/ui/p/flutter/builders/try.shadow/Mac%20plugin_test_ios/4/overview\n\n\nBug: https://github.com/flutter/flutter/issues/137951\nChange-Id: I7e552aff11d722d850ec40125c89311db6191b1b\nReviewed-on: https://flutter-review.googlesource.com/c/recipes/+/52703\nReviewed-by: Keyong Han \u003ckeyonghan@google.com\u003e\nCommit-Queue: Ricardo Amador \u003cricardoamador@google.com\u003e\n",
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