bazel - a fast, scalable, multi-language and extensible build system

	Commit message (Collapse)	Author	Age
*	Replace all usages of Blaze's Preconditions class with guava.	tomlu	2017-11-09
\| \| \| \| \| \| \| \|	Blaze had its own class to avoid GC from varargs array creation for the precondition happy path. Guava now (mostly) implements these, making it unnecessary to maintain our own. This change was almost entirely automated by search-and-replace. A few BUILD files needed fixing up since I removed an export of preconditions from lib:util, which was all done by add_deps. There was one incorrect usage of Preconditions that was caught by error prone (which checks Guava's version of Preconditions) that I had to change manually. PiperOrigin-RevId: 175033526
*	Support multiple mirror URLs for external repos	Justine Tunney	2016-11-29
	This change improves upon 4c67807964e37cfd55bbcda4c6374fcc480bcecc. - A urls attribute has been added to the native workspace rules, with the exception of maven_jar and git_repository. The Skylark repository API also supports multiple URLs now. - The earlier mirrors in the list are preferred. Failover will happen automatically in parallel. - The first 32kB of data is checked before choosing a mirror in order to evade captive portals. - If one's Internet goes down or a download times out, then the download will resume automatically where it left off, provided the server supports RFC7233 for that particular file. Please note that GitHub does not support this for archive snapshots. Files should always be mirrored to a CDN, e.g. GCS, because they support this. - A semaphore is now used on downloads so only 8 can happen at once. Fixes #1814 Fixes #2131 Fixes #2008 Fixes #1968 Fixes #1717 Fixes #943 Wont fix #1194 Fixes tensorflow/tensorflow#5933 Fixes tensorflow/tensorflow#5924 Fixes tensorflow/tensorflow#5924 Fixes tensorflow/tensorflow#5432 See #1607 See #821 See tensorflow/tensorflow#5080 See tensorflow/tensorflow#5029 See tensorflow/tensorflow#4583 See tensorflow/tensorflow#4058 RELNOTES: A urls attribute has been added to repository rules to support multiple mirror URLs for reliably downloading files. -- MOS_MIGRATED_REVID=140495736