From 849951be1d1a7ee9f9302006ccb187bf5b4e36f3 Mon Sep 17 00:00:00 2001 From: Paul Buetow Date: Wed, 22 Jul 2026 23:51:18 +0300 Subject: =?UTF-8?q?feat:=20DTail=20fork=20=E2=80=94=20server/client=20feat?= =?UTF-8?q?ure=20development?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Squashed development of the snonux/dtail fork's product code (internal/, cmd/) since diverging from mimecast/dtail. Major areas: - Read/output path: the former "turbo" channel-less path is now the single, default server-side read/output path for cat/grep/tail and MapReduce; the old channel-based path and its config/env toggles were removed. - MapReduce: single aggregate implementation (server + serverless) fed directly by a processor pipeline, with input-exhausted finalization via the shutdown coordinator; high-concurrency and data-race fixes. - Journal source reads (journal:unit.service) via journalctl, Linux-gated behind a journal-v1 capability. - Auth-key fast reconnect: in-memory per-user public-key cache with TTL/max-keys, registered over an authenticated session (AUTHKEY), checked before authorized_keys. - Interactive query reload (--interactive-query) with SESSION START/UPDATE generation boundaries and capability negotiation. - Client-side deadlines: --timeout / --shutdownAfter as context deadlines; follow shutdown handling. - Client logging: diagnostics-only daily log by default, opt-in payload tee via --log-payload. - Numerous correctness fixes (buffer-pool double-recycle races, EOF-sentinel leaks, glob-expansion cap, TOCTOU in CSV parsing) with accompanying unit tests. Co-Authored-By: Claude Opus 4.8 --- internal/cli/pprof_test.go | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 internal/cli/pprof_test.go (limited to 'internal/cli/pprof_test.go') diff --git a/internal/cli/pprof_test.go b/internal/cli/pprof_test.go new file mode 100644 index 0000000..aa1cd05 --- /dev/null +++ b/internal/cli/pprof_test.go @@ -0,0 +1,41 @@ +package cli + +import ( + "runtime" + "testing" +) + +// TestEnableProfilingRatesSetsMutexFraction verifies that EnableProfilingRates +// actually turns on mutex profiling. Without this the /debug/pprof/mutex +// endpoint reports an empty profile. runtime.SetMutexProfileFraction(-1) reads +// the current fraction without changing it, so it lets us assert the state. +func TestEnableProfilingRatesSetsMutexFraction(t *testing.T) { + // Save and restore global runtime state so this test does not leak into + // other tests in the package. The block profile rate has no getter, so we + // simply disable it again on cleanup. + prevMutex := runtime.SetMutexProfileFraction(-1) + t.Cleanup(func() { + runtime.SetMutexProfileFraction(prevMutex) + runtime.SetBlockProfileRate(0) + }) + + // Start from a known-disabled state. + runtime.SetMutexProfileFraction(0) + + EnableProfilingRates() + + if got := runtime.SetMutexProfileFraction(-1); got != mutexProfileFraction { + t.Errorf("mutex profile fraction = %d, want %d", got, mutexProfileFraction) + } +} + +// TestProfilingRateConstants pins the ss0-validated values so a change is a +// conscious decision rather than an accident. +func TestProfilingRateConstants(t *testing.T) { + if mutexProfileFraction != 5 { + t.Errorf("mutexProfileFraction = %d, want 5", mutexProfileFraction) + } + if blockProfileRateNanos != 100000 { + t.Errorf("blockProfileRateNanos = %d, want 100000", blockProfileRateNanos) + } +} -- cgit v1.2.3