68 lines
2.1 KiB
Go
68 lines
2.1 KiB
Go
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// Copyright 2023 The Prometheus Authors
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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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package internal
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import (
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"flag"
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"os"
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"gopkg.in/yaml.v2"
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)
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const WhatsupPort = "99"
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var (
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WhatsAppFlags = flag.NewFlagSet("whatsapp", flag.ExitOnError)
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prometheusAddr = WhatsAppFlags.String("prometheus-address", "", "The address of Prometheus to query.")
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traceEndpoint = WhatsAppFlags.String("trace-endpoint", "", "Optional GRPC OTLP endpoint for tracing backend. Set it to 'stdout' to print traces to the output instead.")
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traceSamplingRatio = WhatsAppFlags.Float64("trace-sampling-ratio", 1.0, "Sampling ratio. Currently 1.0 is the best value to use with exemplars.")
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configFile = WhatsAppFlags.String("config-file", "./whatsup.yaml", "YAML configuration with same options as flags here. Flags override the configuration items.")
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)
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type Config struct {
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PrometheusAddr string `yaml:"PrometheusAddress,omitempty"`
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TraceEndpoint string `yaml:"TraceEndpoint,omitempty"`
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TraceSamplingRatio float64 `yaml:"TraceSamplingRatio,omitempty"`
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}
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func ParseOptions(args []string) (Config, error) {
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c := Config{}
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if err := WhatsAppFlags.Parse(args); err != nil {
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return c, err
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}
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if *configFile != "" {
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b, err := os.ReadFile(*configFile)
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if err != nil {
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return c, err
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}
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if err := yaml.Unmarshal(b, &c); err != nil {
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return c, err
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}
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}
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if *prometheusAddr != "" {
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c.PrometheusAddr = *prometheusAddr
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}
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if *traceEndpoint != "" {
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c.TraceEndpoint = *traceEndpoint
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}
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if *traceSamplingRatio > 0 {
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c.TraceSamplingRatio = *traceSamplingRatio
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}
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return c, nil
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}
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