Re-land the port of Pants' nailgun client to Rust #11147
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…sbuild#10929)" This reverts commit dbf744f. [ci skip-build-wheels]
…e repl/TTY issue. # Building wheels and fs_util will be skipped. Delete if not intended. [ci skip-build-wheels]
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The two commits represent the revert-of-the-revert, and the bump to |
gshuflin
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Nov 12, 2020
Eric-Arellano
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Nov 12, 2020
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Nov 25, 2020
Internal only changes: * Rewrite changelog helper to Python and use markdown for changelog ([#11224](#11224)) * Update to nails `0.8.0`. ([#11226](#11226)) * upgrade to Rust v1.48.0 ([#11210](#11210)) * Move Session to its own file. ([#11222](#11222)) * Port InteractiveProcess to Tokio to unblock async interruption ([#11219](#11219)) * Add `./cargo` script to facilitate Rust development ([#11218](#11218)) * Add partition metadata ([#11212](#11212)) * Hotfix unbound `$PY` variable breaking cargo script ([#11209](#11209)) * Remove dataclasses backport ([#11208](#11208)) * Stop using Python 3.6 internally and in CI ([#11175](#11175)) * Update to tokio 0.2.23. ([#11200](#11200)) * Add test address metadata ([#11193](#11193)) * Port more tests from `TestBase` to `RuleRunner` ([#11183](#11183)) * acquire GIL during work unit conversion ([#11186](#11186)) * Add counter metrics for remote execution ([#11155](#11155)) * add metrics to local cache code paths ([#11146](#11146)) * Deprecate the `sources` field for `python_awslambda` ([#11176](#11176)) * Make S3 bucket expiry deletion handling robust. ([#11156](#11156)) * Detect delete markers in our s3 cache of native_engine.so. ([#11140](#11140)) * Fix target globs for deleted file `pants_run_integration_test.py`. ([#11127](#11127)) * Deduplicate `Platform` and `PlatformConstraint` ([#11157](#11157)) * move counter increment into check_action_cache ([#11154](#11154)) * Replace the "base target" concept with "BUILD targets" ([#11136](#11136)) * Re-land the port of Pants' nailgun client to Rust ([#11147](#11147)) * Flatten execution and target PlatformConstraints in MultiPlatformProcess ([#11145](#11145)) * Prepare 2.1.0rc2 ([#11180](#11180)) * Prepare 2.1.0rc1 ([#11144](#11144)) * Prepare 2.0.1rc0 ([#11141](#11141)) * Prepare 2.0.1rc2 ([#11220](#11220)) * Prepare 2.1.1rc0 ([#11221](#11221)) * Prepare 2.1.0 ([#11198](#11198)) * Prepare 2.0.1rc1 ([#11192](#11192)) * Prepare 2.1.0rc3 ([#11191](#11191)) [ci skip-rust]
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Problem
#10865 previously landed to port Pants' nailgun client to Rust. It was reverted in #10929 due to an issue with TTY access, where (in particular), the
replgoal was mostly unresponsive.Solution
The unresponsive
replwas due to a bug in thenailslibrary, wherestdinwas being consumed eagerly regardless of whether the server signaled that it would like to receivestdin. Pants sends an environment variable to the server that indicates which TTY the client is connected to, and the server will directly connect to that TTY if it can. When the server directly connects to the client's TTY, it does not acceptstdin, but sincestdinwas read eagerly by thenailsclient (and ending up stuck in a buffer, since the server would not request it), the result was two different processes readingstdinfrom the TTY: the client, and the server.Bump to
nails0.7.0, which makesstdininitialization lazy.