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📁 ..	-	2025-05-25 12:27
📄 config.go // Copyright 2018 Prometheus Team // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. package config import ( "os" "github.com/alecthomas/kingpin/v2" "gopkg.in/yaml.v2" ) type getFlagger interface { GetFlag(name string) kingpin.FlagClause } // Resolver represents a configuration file resolver for kingpin. type Resolver struct { flags map[string]string } // NewResolver returns a Resolver structure. func NewResolver(files []string, legacyFlags map[string]string) (Resolver, error) { flags := map[string]string{} for _, f := range files { if _, err := os.Stat(f); err != nil { continue } b, err := os.ReadFile(f) if err != nil { if os.IsNotExist(err) { continue } return nil, err } var m map[string]string err = yaml.Unmarshal(b, &m) if err != nil { return nil, err } for k, v := range m { if flag, ok := legacyFlags[k]; ok { if _, ok := m[flag]; ok { continue } k = flag } if _, ok := flags[k]; !ok { flags[k] = v } } } return &Resolver{flags: flags}, nil } func (c Resolver) setDefault(v getFlagger) { for name, value := range c.flags { f := v.GetFlag(name) if f != nil { f.Default(value) } } } // Bind sets active flags with their default values from the configuration file(s). func (c Resolver) Bind(app *kingpin.Application, args []string) error { // Parse the command line arguments to get the selected command. pc, err := app.ParseContext(args) if err != nil { return err } c.setDefault(app) if pc.SelectedCommand != nil { c.setDefault(pc.SelectedCommand) } return nil }	2.05 KB	2025-05-25 12:27
📄 config_test.go // Copyright 2015 Prometheus Team // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. package config import ( "io" "testing" "github.com/alecthomas/kingpin/v2" ) var ( url string id string ) func newApp() kingpin.Application { url = new(string) id = new(string) app := kingpin.New("app", "") app.UsageWriter(io.Discard) app.ErrorWriter(io.Discard) app.Terminate(nil) app.Flag("url", "").StringVar(url) silence := app.Command("silence", "") silenceDel := silence.Command("del", "") silenceDel.Flag("id", "").StringVar(id) return app } func TestNewConfigResolver(t testing.T) { for i, tc := range []struct { files []string err bool }{ {[]string{}, false}, {[]string{"testdata/amtool.good1.yml", "testdata/amtool.good2.yml"}, false}, {[]string{"testdata/amtool.good1.yml", "testdata/not_existing.yml"}, false}, {[]string{"testdata/amtool.good1.yml", "testdata/amtool.bad.yml"}, true}, } { _, err := NewResolver(tc.files, nil) if tc.err != (err != nil) { if tc.err { t.Fatalf("%d: expected error but got none", i) } else { t.Fatalf("%d: expected no error but got %v", i, err) } } } } type expectFn func() func TestConfigResolverBind(t testing.T) { expectURL := func(expected string) expectFn { return func() { if url != expected { t.Fatalf("expected url flag %q but got %q", expected, url) } } } expectID := func(expected string) expectFn { return func() { if id != expected { t.Fatalf("expected ID flag %q but got %q", expected, *id) } } } for i, tc := range []struct { files []string legacyFlags map[string]string args []string err bool expCmd string expFns []expectFn }{ { []string{"testdata/amtool.good1.yml", "testdata/amtool.good2.yml"}, nil, []string{}, true, "", []expectFn{expectURL("url1")}, // from amtool.good1.yml }, { []string{"testdata/amtool.good2.yml"}, nil, []string{}, true, "", []expectFn{expectURL("url2")}, // from amtool.good2.yml }, { []string{"testdata/amtool.good1.yml", "testdata/amtool.good2.yml"}, nil, []string{"--url", "url3"}, true, "", []expectFn{expectURL("url3")}, // from command line }, { []string{"testdata/amtool.good1.yml", "testdata/amtool.good2.yml"}, map[string]string{"old-id": "id"}, []string{"silence", "del"}, false, "silence del", []expectFn{ expectURL("url1"), // from amtool.good1.yml expectID("id1"), // from amtool.good1.yml }, }, { []string{"testdata/amtool.good2.yml"}, map[string]string{"old-id": "id"}, []string{"silence", "del"}, false, "silence del", []expectFn{ expectURL("url2"), // from amtool.good2.yml expectID("id2"), // from amtool.good2.yml }, }, { []string{"testdata/amtool.good2.yml"}, map[string]string{"old-id": "id"}, []string{"silence", "del", "--id", "id3"}, false, "silence del", []expectFn{ expectURL("url2"), // from amtool.good2.yml expectID("id3"), // from command line }, }, } { r, err := NewResolver(tc.files, tc.legacyFlags) if err != nil { t.Fatalf("%d: expected no error but got: %v", i, err) } app := newApp() err = r.Bind(app, tc.args) if err != nil { t.Fatalf("%d: expected Bind() to return no error but got: %v", i, err) } cmd, err := app.Parse(tc.args) if tc.err != (err != nil) { if tc.err { t.Fatalf("%d: expected Parse() to return an error but got none", i) } else { t.Fatalf("%d: expected Parse() to return no error but got: %v", i, err) } } if cmd != tc.expCmd { t.Fatalf("%d: expected command %q but got %q", i, tc.expCmd, cmd) } for _, fn := range tc.expFns { fn() } } }	4.14 KB	2025-05-25 12:27
📄 http_config.go // Copyright 2021 Prometheus Team // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. package config import ( "os" "path/filepath" promconfig "github.com/prometheus/common/config" "gopkg.in/yaml.v2" ) // LoadHTTPConfigFile returns HTTPClientConfig for the given http_config file. func LoadHTTPConfigFile(filename string) (*promconfig.HTTPClientConfig, error) { b, err := os.ReadFile(filename) if err != nil { return nil, err } httpConfig := &promconfig.HTTPClientConfig{} err = yaml.UnmarshalStrict(b, httpConfig) if err != nil { return nil, err } httpConfig.SetDirectory(filepath.Dir(filepath.Dir(filename))) return httpConfig, nil }	1.13 KB	2025-05-25 12:27
📁 testdata	-	2025-05-25 12:27

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