)]}'
{
  "commit": "c22c43da2a7fe0a0e62090d2c1d6a67b9a715a8c",
  "tree": "0b014ba9f98992d9579aabdb490963e57efb1ba5",
  "parents": [
    "a43cecc1e205555938ba82c64d30c9bb13ef747d"
  ],
  "author": {
    "name": "Michael Bolin",
    "email": "mbolin@fb.com",
    "time": "Wed Oct 30 12:23:08 2013 -0700"
  },
  "committer": {
    "name": "Michael Bolin",
    "email": "mbolin@fb.com",
    "time": "Wed Oct 30 13:52:47 2013 -0700"
  },
  "message": "Replace InputRule with Path.\n\nSummary:\nUpdated `ConcurrentMapFileHashCache` to use a `LoadingCache` to maintain the\nmapping from `Path` to `HashCode`.\n\nPreviously, `InputRule` contained four fields (`File`, `BuildTarget`, `ListenableFuture`, `RuleKey`).\nWe had one of these for potentially every file in a project. That is a large potential for\nwasted memory. The existence of `InputRule` also required us to persist some kludginess in\n`BuildTarget`.\n\nThis diff removes the hacks from `BuildTarget` and reclaims potentially a ton of memory.\nBy using a `LoadingCache`, we do not have to worry about the same input file being sha1\u0027d\nmultiple times. We can also stop passing around references to a pathResolver in many places\nand rely on `Path` being a path relative to the project root.\n\nTest Plan: Sandcastle builds.\n",
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