[chore] Add Go runtime and host metrics (#4137)

Daenney is a dummy and forgot to add these when he revamped the OTEL stuff.

Reviewed-on: https://codeberg.org/superseriousbusiness/gotosocial/pulls/4137
Co-authored-by: Daenney <daenney@noreply.codeberg.org>
Co-committed-by: Daenney <daenney@noreply.codeberg.org>

1 files changed, 34 insertions, 0 deletions

diff --git a/vendor/go.opentelemetry.io/contrib/instrumentation/runtime/doc.go b/vendor/go.opentelemetry.io/contrib/instrumentation/runtime/doc.go
new file mode 100644
index 000000000..2b5e78686
--- /dev/null
+++ b/vendor/go.opentelemetry.io/contrib/instrumentation/runtime/doc.go
@@ -0,0 +1,34 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+// Package runtime implements the conventional runtime metrics specified by OpenTelemetry.
+//
+// The metric events produced are:
+//
+//	runtime.go.cgo.calls         -          Number of cgo calls made by the current process
+//	runtime.go.gc.count          -          Number of completed garbage collection cycles
+//	runtime.go.gc.pause_ns       (ns)       Amount of nanoseconds in GC stop-the-world pauses
+//	runtime.go.gc.pause_total_ns (ns)       Cumulative nanoseconds in GC stop-the-world pauses since the program started
+//	runtime.go.goroutines        -          Number of goroutines that currently exist
+//	runtime.go.lookups           -          Number of pointer lookups performed by the runtime
+//	runtime.go.mem.heap_alloc    (bytes)    Bytes of allocated heap objects
+//	runtime.go.mem.heap_idle     (bytes)    Bytes in idle (unused) spans
+//	runtime.go.mem.heap_inuse    (bytes)    Bytes in in-use spans
+//	runtime.go.mem.heap_objects  -          Number of allocated heap objects
+//	runtime.go.mem.heap_released (bytes)    Bytes of idle spans whose physical memory has been returned to the OS
+//	runtime.go.mem.heap_sys      (bytes)    Bytes of heap memory obtained from the OS
+//	runtime.go.mem.live_objects  -          Number of live objects is the number of cumulative Mallocs - Frees
+//	runtime.uptime               (ms)       Milliseconds since application was initialized
+//
+// When the OTEL_GO_X_DEPRECATED_RUNTIME_METRICS environment variable is set to
+// false, the metrics produced are:
+//
+//	go.memory.used          By            Memory used by the Go runtime.
+//	go.memory.limit         By            Go runtime memory limit configured by the user, if a limit exists.
+//	go.memory.allocated     By            Memory allocated to the heap by the application.
+//	go.memory.allocations   {allocation}  Count of allocations to the heap by the application.
+//	go.memory.gc.goal       By            Heap size target for the end of the GC cycle.
+//	go.goroutine.count      {goroutine}   Count of live goroutines.
+//	go.processor.limit      {thread}      The number of OS threads that can execute user-level Go code simultaneously.
+//	go.config.gogc          %             Heap size target percentage configured by the user, otherwise 100.
+package runtime // import "go.opentelemetry.io/contrib/instrumentation/runtime"