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zeekayandHanzo Dev
4bcdcbfbf6
Both modules declare go 1.27.1 and the build images follow. go fix applied the modernizers: promoted-field keys in struct literals, SplitSeq, strings.Cut, new(expr), slices.Contains and any. The ptr helper had no callers left once new(expr) could say it. omitzero is not applied; it changes what the JSON says, so it is a per-field decision. Co-authored-by: Hanzo Dev <[email protected]>
88 lines
3.0 KiB
Go
88 lines
3.0 KiB
Go
// Copyright 2023-2026 Hanzo AI Inc. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Tracing bootstrap — this is the ONE way a Hanzo Go daemon emits spans: one
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// call, one service name, so the console's per-product Monitoring tab (which
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// filters by service name) lights up for this product.
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//
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// Spans travel to o11y over ZAP, luxfi/trace's native transport: a JSON
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// SpanBatch inside a ZAP envelope, read by hanzo/o11y/pkg/zapreceiver. There is
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// no OTLP, no protobuf and no gRPC anywhere in this path — the exporter that
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// carried them is gone from luxfi/trace, which is why this binary's module
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// graph no longer contains google.golang.org/grpc.
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//
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// Opt-in via O11Y_ENDPOINT and non-fatal in every failure mode, so this is safe
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// to ship before a collector is live: New() does not dial, and the batch
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// processor exports in the background, so boot never blocks on o11y.
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package main
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import (
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"context"
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"log"
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"os"
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"strings"
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"github.com/luxfi/trace"
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)
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// The collector's ZAP address in-cluster. Set O11Y_ENDPOINT to "default" to take
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// this rather than repeating it in every deployment.
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const defaultO11yEndpoint = "o11y.hanzo.svc:4317"
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// initTelemetry installs the tracer for serviceName and returns a shutdown func
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// that flushes and stops it. The returned func is ALWAYS non-nil, so callers
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// defer it unconditionally. An operator may override serviceName at runtime with
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// O11Y_SERVICE_NAME.
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func initTelemetry(_ context.Context, serviceName string) func(context.Context) {
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endpoint := firstNonEmptyEnv("O11Y_TRACES_ENDPOINT", "O11Y_ENDPOINT")
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if endpoint == "" {
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log.Printf("telemetry: disabled (set O11Y_ENDPOINT to emit spans to o11y)")
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return func(context.Context) {}
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}
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if endpoint == "default" {
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endpoint = defaultO11yEndpoint
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}
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if v := strings.TrimSpace(os.Getenv("O11Y_SERVICE_NAME")); v != "" {
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serviceName = v
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}
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tracer, err := trace.New(trace.Config{
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Type: trace.ZAP,
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Endpoint: endpoint,
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TraceSampleRate: 1,
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AppName: serviceName,
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})
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if err != nil {
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log.Printf("telemetry: create ZAP trace exporter: %v", err)
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return func(context.Context) {}
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}
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log.Printf("telemetry: spans -> o11y over ZAP at %s (service=%s)", endpoint, serviceName)
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return func(context.Context) {
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// Tracer.Close carries its own shutdown deadline.
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if err := tracer.Close(); err != nil {
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log.Printf("telemetry: shutdown: %v", err)
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}
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}
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}
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func firstNonEmptyEnv(keys ...string) string {
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for _, k := range keys {
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if v := strings.TrimSpace(os.Getenv(k)); v != "" {
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return v
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}
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}
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return ""
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}
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