Add Honeycomb tracing to all Boulder components which act as
HTTP servers, gRPC servers, or gRPC clients. Add many values
which we currently emit to logs to the trace spans. Add a way to
configure the Honeycomb integration to our config files, and by
default configure all of our tests to "mute" (send nothing).
Followup changes will refine the configuration, attempt to reduce
the new dependency load, and introduce better sampling.
Part of https://github.com/letsencrypt/dev-misc-tickets/issues/218
* cmd: update prometheus.NewProcessCollector args.
There's a new struct `prometheus.ProcessCollectorOpts` that is expected
to be used as the sole argument to `prometheus.NewProcessCollector`. We
don't need to specify `os.Getpid` as the `PidFn` of the struct because
the default is to assume `os.Getpid`. Similarly we don't need to set the
namespace to `""` explicitly, it is the default.
* SA: reimplement db metrics as custom collector.
The modern Prometheus golang API supports translating between legacy
metric sources on the fly with a custom collector. We can use this
approach to collect the metrics from `gorp.DbMap`'s via the `sql.DB`
type's `Stats` function and the returned `sql.DbStats` struct.
This is a cleaner solution overall (we can lose the DB metrics updating
go routine) and it avoids the need to use the now-removed `Set` method
of the `prometheus.Counter` type.
* test: Update CountHistogramSamples.
The `With` function of `prometheus.HistogramVec` types we tend to use as
the argument to `test.CountHistogramSamples` changed to return
a `prometheus.Observer`. Since we only use this function in test
contexts, and only with things that cast back to
a `prometheus.Histogram` we take that approach to fix the problem
without updating call-sites.
Fixes#3837
```
$ go test google.golang.org/grpc/...
ok google.golang.org/grpc 24.275s
? google.golang.org/grpc/balancer [no test files]
? google.golang.org/grpc/balancer/base [no test files]
ok google.golang.org/grpc/balancer/grpclb 7.271s
? google.golang.org/grpc/balancer/grpclb/grpc_lb_v1 [no test files]
ok google.golang.org/grpc/balancer/roundrobin 0.427s
ok google.golang.org/grpc/benchmark 0.006s [no tests to run]
? google.golang.org/grpc/benchmark/benchmain [no test files]
? google.golang.org/grpc/benchmark/benchresult [no test files]
? google.golang.org/grpc/benchmark/client [no test files]
? google.golang.org/grpc/benchmark/grpc_testing [no test files]
ok google.golang.org/grpc/benchmark/latency 1.012s
ok google.golang.org/grpc/benchmark/primitives 0.036s [no tests to run]
? google.golang.org/grpc/benchmark/server [no test files]
? google.golang.org/grpc/benchmark/stats [no test files]
? google.golang.org/grpc/benchmark/worker [no test files]
? google.golang.org/grpc/binarylog/grpc_binarylog_v1 [no test files]
? google.golang.org/grpc/channelz/grpc_channelz_v1 [no test files]
ok google.golang.org/grpc/channelz/service 0.024s
ok google.golang.org/grpc/codes 0.006s
? google.golang.org/grpc/connectivity [no test files]
ok google.golang.org/grpc/credentials 0.014s
ok google.golang.org/grpc/credentials/alts 0.009s
? google.golang.org/grpc/credentials/alts/internal [no test files]
ok google.golang.org/grpc/credentials/alts/internal/authinfo 0.006s
ok google.golang.org/grpc/credentials/alts/internal/conn 0.133s
ok google.golang.org/grpc/credentials/alts/internal/handshaker 0.045s
ok google.golang.org/grpc/credentials/alts/internal/handshaker/service 0.013s
? google.golang.org/grpc/credentials/alts/internal/proto/grpc_gcp [no test files]
? google.golang.org/grpc/credentials/alts/internal/testutil [no test files]
? google.golang.org/grpc/credentials/google [no test files]
? google.golang.org/grpc/credentials/oauth [no test files]
? google.golang.org/grpc/encoding [no test files]
? google.golang.org/grpc/encoding/gzip [no test files]
ok google.golang.org/grpc/encoding/proto 0.075s
? google.golang.org/grpc/examples/helloworld/greeter_client [no test files]
? google.golang.org/grpc/examples/helloworld/greeter_server [no test files]
? google.golang.org/grpc/examples/helloworld/helloworld [no test files]
ok google.golang.org/grpc/examples/helloworld/mock_helloworld 0.011s
? google.golang.org/grpc/examples/oauth/client [no test files]
? google.golang.org/grpc/examples/oauth/server [no test files]
? google.golang.org/grpc/examples/route_guide/client [no test files]
ok google.golang.org/grpc/examples/route_guide/mock_routeguide 0.039s
? google.golang.org/grpc/examples/route_guide/routeguide [no test files]
? google.golang.org/grpc/examples/route_guide/server [no test files]
? google.golang.org/grpc/examples/rpc_errors/client [no test files]
? google.golang.org/grpc/examples/rpc_errors/server [no test files]
ok google.golang.org/grpc/grpclog 0.007s
? google.golang.org/grpc/grpclog/glogger [no test files]
ok google.golang.org/grpc/health 0.005s
? google.golang.org/grpc/health/grpc_health_v1 [no test files]
? google.golang.org/grpc/internal [no test files]
? google.golang.org/grpc/internal/backoff [no test files]
ok google.golang.org/grpc/internal/binarylog 0.006s
ok google.golang.org/grpc/internal/channelz 0.012s
? google.golang.org/grpc/internal/envconfig [no test files]
? google.golang.org/grpc/internal/grpcrand [no test files]
ok google.golang.org/grpc/internal/grpcsync 0.013s
ok google.golang.org/grpc/internal/leakcheck 4.052s
? google.golang.org/grpc/internal/syscall [no test files]
ok google.golang.org/grpc/internal/testutils 0.002s
ok google.golang.org/grpc/internal/transport 81.968s
? google.golang.org/grpc/interop [no test files]
? google.golang.org/grpc/interop/alts/client [no test files]
? google.golang.org/grpc/interop/alts/server [no test files]
? google.golang.org/grpc/interop/client [no test files]
? google.golang.org/grpc/interop/fake_grpclb [no test files]
? google.golang.org/grpc/interop/grpc_testing [no test files]
? google.golang.org/grpc/interop/http2 [no test files]
? google.golang.org/grpc/interop/server [no test files]
? google.golang.org/grpc/keepalive [no test files]
ok google.golang.org/grpc/metadata 0.006s
ok google.golang.org/grpc/naming 0.159s
? google.golang.org/grpc/peer [no test files]
ok google.golang.org/grpc/reflection 0.016s
? google.golang.org/grpc/reflection/grpc_reflection_v1alpha [no test files]
? google.golang.org/grpc/reflection/grpc_testing [no test files]
? google.golang.org/grpc/reflection/grpc_testingv3 [no test files]
? google.golang.org/grpc/resolver [no test files]
ok google.golang.org/grpc/resolver/dns 1.370s
? google.golang.org/grpc/resolver/manual [no test files]
? google.golang.org/grpc/resolver/passthrough [no test files]
ok google.golang.org/grpc/stats 0.104s
? google.golang.org/grpc/stats/grpc_testing [no test files]
ok google.golang.org/grpc/status 0.017s
? google.golang.org/grpc/stress/client [no test files]
? google.golang.org/grpc/stress/grpc_testing [no test files]
? google.golang.org/grpc/stress/metrics_client [no test files]
? google.golang.org/grpc/tap [no test files]
ok google.golang.org/grpc/test 33.866s
ok google.golang.org/grpc/test/bufconn 0.005s
? google.golang.org/grpc/test/codec_perf [no test files]
? google.golang.org/grpc/test/go_vet [no test files]
? google.golang.org/grpc/test/grpc_testing [no test files]
```
Aaron Gable
Daniel McCarney
Jacob Hoffman-Andrews