package configuration import ( "bytes" "net/http" "os" "reflect" "strings" "testing" . "gopkg.in/check.v1" "gopkg.in/yaml.v2" ) // Hook up gocheck into the "go test" runner func Test(t *testing.T) { TestingT(t) } // configStruct is a canonical example configuration, which should map to configYamlV0_1 var configStruct = Configuration{ Version: "0.1", Log: struct { Level Loglevel `yaml:"level"` Formatter string `yaml:"formatter,omitempty"` Fields map[string]interface{} `yaml:"fields,omitempty"` Hooks []LogHook `yaml:"hooks,omitempty"` }{ Fields: map[string]interface{}{"environment": "test"}, }, Loglevel: "info", Storage: Storage{ "s3": Parameters{ "region": "us-east-1", "bucket": "my-bucket", "rootdirectory": "/registry", "encrypt": true, "secure": false, "accesskey": "SAMPLEACCESSKEY", "secretkey": "SUPERSECRET", "host": nil, "port": 42, }, }, Auth: Auth{ "silly": Parameters{ "realm": "silly", "service": "silly", }, }, Reporting: Reporting{ Bugsnag: BugsnagReporting{ APIKey: "BugsnagApiKey", }, }, Notifications: Notifications{ Endpoints: []Endpoint{ { Name: "endpoint-1", URL: "http://example.com", Headers: http.Header{ "Authorization": []string{"Bearer "}, }, }, }, }, HTTP: struct { Addr string `yaml:"addr,omitempty"` Net string `yaml:"net,omitempty"` Host string `yaml:"host,omitempty"` Prefix string `yaml:"prefix,omitempty"` Secret string `yaml:"secret,omitempty"` TLS struct { Certificate string `yaml:"certificate,omitempty"` Key string `yaml:"key,omitempty"` ClientCAs []string `yaml:"clientcas,omitempty"` } `yaml:"tls,omitempty"` Headers http.Header `yaml:"headers,omitempty"` Debug struct { Addr string `yaml:"addr,omitempty"` } `yaml:"debug,omitempty"` }{ TLS: struct { Certificate string `yaml:"certificate,omitempty"` Key string `yaml:"key,omitempty"` ClientCAs []string `yaml:"clientcas,omitempty"` }{ ClientCAs: []string{"/path/to/ca.pem"}, }, Headers: http.Header{ "X-Content-Type-Options": []string{"nosniff"}, }, }, } // configYamlV0_1 is a Version 0.1 yaml document representing configStruct var configYamlV0_1 = ` version: 0.1 log: fields: environment: test loglevel: info storage: s3: region: us-east-1 bucket: my-bucket rootdirectory: /registry encrypt: true secure: false accesskey: SAMPLEACCESSKEY secretkey: SUPERSECRET host: ~ port: 42 auth: silly: realm: silly service: silly notifications: endpoints: - name: endpoint-1 url: http://example.com headers: Authorization: [Bearer ] reporting: bugsnag: apikey: BugsnagApiKey http: clientcas: - /path/to/ca.pem headers: X-Content-Type-Options: [nosniff] ` // inmemoryConfigYamlV0_1 is a Version 0.1 yaml document specifying an inmemory // storage driver with no parameters var inmemoryConfigYamlV0_1 = ` version: 0.1 loglevel: info storage: inmemory auth: silly: realm: silly service: silly notifications: endpoints: - name: endpoint-1 url: http://example.com headers: Authorization: [Bearer ] http: headers: X-Content-Type-Options: [nosniff] ` type ConfigSuite struct { expectedConfig *Configuration } var _ = Suite(new(ConfigSuite)) func (suite *ConfigSuite) SetUpTest(c *C) { os.Clearenv() suite.expectedConfig = copyConfig(configStruct) } // TestMarshalRoundtrip validates that configStruct can be marshaled and // unmarshaled without changing any parameters func (suite *ConfigSuite) TestMarshalRoundtrip(c *C) { configBytes, err := yaml.Marshal(suite.expectedConfig) c.Assert(err, IsNil) config, err := Parse(bytes.NewReader(configBytes)) c.Assert(err, IsNil) c.Assert(config, DeepEquals, suite.expectedConfig) } // TestParseSimple validates that configYamlV0_1 can be parsed into a struct // matching configStruct func (suite *ConfigSuite) TestParseSimple(c *C) { config, err := Parse(bytes.NewReader([]byte(configYamlV0_1))) c.Assert(err, IsNil) c.Assert(config, DeepEquals, suite.expectedConfig) } // TestParseInmemory validates that configuration yaml with storage provided as // a string can be parsed into a Configuration struct with no storage parameters func (suite *ConfigSuite) TestParseInmemory(c *C) { suite.expectedConfig.Storage = Storage{"inmemory": Parameters{}} suite.expectedConfig.Reporting = Reporting{} suite.expectedConfig.Log.Fields = nil config, err := Parse(bytes.NewReader([]byte(inmemoryConfigYamlV0_1))) c.Assert(err, IsNil) c.Assert(config, DeepEquals, suite.expectedConfig) } // TestParseIncomplete validates that an incomplete yaml configuration cannot // be parsed without providing environment variables to fill in the missing // components. func (suite *ConfigSuite) TestParseIncomplete(c *C) { incompleteConfigYaml := "version: 0.1" _, err := Parse(bytes.NewReader([]byte(incompleteConfigYaml))) c.Assert(err, NotNil) suite.expectedConfig.Log.Fields = nil suite.expectedConfig.Storage = Storage{"filesystem": Parameters{"rootdirectory": "/tmp/testroot"}} suite.expectedConfig.Auth = Auth{"silly": Parameters{"realm": "silly"}} suite.expectedConfig.Reporting = Reporting{} suite.expectedConfig.Notifications = Notifications{} suite.expectedConfig.HTTP.Headers = nil // Note: this also tests that REGISTRY_STORAGE and // REGISTRY_STORAGE_FILESYSTEM_ROOTDIRECTORY can be used together os.Setenv("REGISTRY_STORAGE", "filesystem") os.Setenv("REGISTRY_STORAGE_FILESYSTEM_ROOTDIRECTORY", "/tmp/testroot") os.Setenv("REGISTRY_AUTH", "silly") os.Setenv("REGISTRY_AUTH_SILLY_REALM", "silly") config, err := Parse(bytes.NewReader([]byte(incompleteConfigYaml))) c.Assert(err, IsNil) c.Assert(config, DeepEquals, suite.expectedConfig) } // TestParseWithSameEnvStorage validates that providing environment variables // that match the given storage type will only include environment-defined // parameters and remove yaml-defined parameters func (suite *ConfigSuite) TestParseWithSameEnvStorage(c *C) { suite.expectedConfig.Storage = Storage{"s3": Parameters{"region": "us-east-1"}} os.Setenv("REGISTRY_STORAGE", "s3") os.Setenv("REGISTRY_STORAGE_S3_REGION", "us-east-1") config, err := Parse(bytes.NewReader([]byte(configYamlV0_1))) c.Assert(err, IsNil) c.Assert(config, DeepEquals, suite.expectedConfig) } // TestParseWithDifferentEnvStorageParams validates that providing environment variables that change // and add to the given storage parameters will change and add parameters to the parsed // Configuration struct func (suite *ConfigSuite) TestParseWithDifferentEnvStorageParams(c *C) { suite.expectedConfig.Storage.setParameter("region", "us-west-1") suite.expectedConfig.Storage.setParameter("secure", true) suite.expectedConfig.Storage.setParameter("newparam", "some Value") os.Setenv("REGISTRY_STORAGE_S3_REGION", "us-west-1") os.Setenv("REGISTRY_STORAGE_S3_SECURE", "true") os.Setenv("REGISTRY_STORAGE_S3_NEWPARAM", "some Value") config, err := Parse(bytes.NewReader([]byte(configYamlV0_1))) c.Assert(err, IsNil) c.Assert(config, DeepEquals, suite.expectedConfig) } // TestParseWithDifferentEnvStorageType validates that providing an environment variable that // changes the storage type will be reflected in the parsed Configuration struct func (suite *ConfigSuite) TestParseWithDifferentEnvStorageType(c *C) { suite.expectedConfig.Storage = Storage{"inmemory": Parameters{}} os.Setenv("REGISTRY_STORAGE", "inmemory") config, err := Parse(bytes.NewReader([]byte(configYamlV0_1))) c.Assert(err, IsNil) c.Assert(config, DeepEquals, suite.expectedConfig) } // TestParseWithDifferentEnvStorageTypeAndParams validates that providing an environment variable // that changes the storage type will be reflected in the parsed Configuration struct and that // environment storage parameters will also be included func (suite *ConfigSuite) TestParseWithDifferentEnvStorageTypeAndParams(c *C) { suite.expectedConfig.Storage = Storage{"filesystem": Parameters{}} suite.expectedConfig.Storage.setParameter("rootdirectory", "/tmp/testroot") os.Setenv("REGISTRY_STORAGE", "filesystem") os.Setenv("REGISTRY_STORAGE_FILESYSTEM_ROOTDIRECTORY", "/tmp/testroot") config, err := Parse(bytes.NewReader([]byte(configYamlV0_1))) c.Assert(err, IsNil) c.Assert(config, DeepEquals, suite.expectedConfig) } // TestParseWithSameEnvLoglevel validates that providing an environment variable defining the log // level to the same as the one provided in the yaml will not change the parsed Configuration struct func (suite *ConfigSuite) TestParseWithSameEnvLoglevel(c *C) { os.Setenv("REGISTRY_LOGLEVEL", "info") config, err := Parse(bytes.NewReader([]byte(configYamlV0_1))) c.Assert(err, IsNil) c.Assert(config, DeepEquals, suite.expectedConfig) } // TestParseWithDifferentEnvLoglevel validates that providing an environment variable defining the // log level will override the value provided in the yaml document func (suite *ConfigSuite) TestParseWithDifferentEnvLoglevel(c *C) { suite.expectedConfig.Loglevel = "error" os.Setenv("REGISTRY_LOGLEVEL", "error") config, err := Parse(bytes.NewReader([]byte(configYamlV0_1))) c.Assert(err, IsNil) c.Assert(config, DeepEquals, suite.expectedConfig) } // TestParseInvalidLoglevel validates that the parser will fail to parse a // configuration if the loglevel is malformed func (suite *ConfigSuite) TestParseInvalidLoglevel(c *C) { invalidConfigYaml := "version: 0.1\nloglevel: derp\nstorage: inmemory" _, err := Parse(bytes.NewReader([]byte(invalidConfigYaml))) c.Assert(err, NotNil) os.Setenv("REGISTRY_LOGLEVEL", "derp") _, err = Parse(bytes.NewReader([]byte(configYamlV0_1))) c.Assert(err, NotNil) } // TestParseWithDifferentEnvReporting validates that environment variables // properly override reporting parameters func (suite *ConfigSuite) TestParseWithDifferentEnvReporting(c *C) { suite.expectedConfig.Reporting.Bugsnag.APIKey = "anotherBugsnagApiKey" suite.expectedConfig.Reporting.Bugsnag.Endpoint = "localhost:8080" suite.expectedConfig.Reporting.NewRelic.LicenseKey = "NewRelicLicenseKey" suite.expectedConfig.Reporting.NewRelic.Name = "some NewRelic NAME" os.Setenv("REGISTRY_REPORTING_BUGSNAG_APIKEY", "anotherBugsnagApiKey") os.Setenv("REGISTRY_REPORTING_BUGSNAG_ENDPOINT", "localhost:8080") os.Setenv("REGISTRY_REPORTING_NEWRELIC_LICENSEKEY", "NewRelicLicenseKey") os.Setenv("REGISTRY_REPORTING_NEWRELIC_NAME", "some NewRelic NAME") config, err := Parse(bytes.NewReader([]byte(configYamlV0_1))) c.Assert(err, IsNil) c.Assert(config, DeepEquals, suite.expectedConfig) } // TestParseInvalidVersion validates that the parser will fail to parse a newer configuration // version than the CurrentVersion func (suite *ConfigSuite) TestParseInvalidVersion(c *C) { suite.expectedConfig.Version = MajorMinorVersion(CurrentVersion.Major(), CurrentVersion.Minor()+1) configBytes, err := yaml.Marshal(suite.expectedConfig) c.Assert(err, IsNil) _, err = Parse(bytes.NewReader(configBytes)) c.Assert(err, NotNil) } // TestParseExtraneousVars validates that environment variables referring to // nonexistent variables don't cause side effects. func (suite *ConfigSuite) TestParseExtraneousVars(c *C) { suite.expectedConfig.Reporting.Bugsnag.Endpoint = "localhost:8080" // A valid environment variable os.Setenv("REGISTRY_REPORTING_BUGSNAG_ENDPOINT", "localhost:8080") // Environment variables which shouldn't set config items os.Setenv("registry_REPORTING_NEWRELIC_LICENSEKEY", "NewRelicLicenseKey") os.Setenv("REPORTING_NEWRELIC_NAME", "some NewRelic NAME") os.Setenv("REGISTRY_DUCKS", "quack") os.Setenv("REGISTRY_REPORTING_ASDF", "ghjk") config, err := Parse(bytes.NewReader([]byte(configYamlV0_1))) c.Assert(err, IsNil) c.Assert(config, DeepEquals, suite.expectedConfig) } // TestParseEnvVarImplicitMaps validates that environment variables can set // values in maps that don't already exist. func (suite *ConfigSuite) TestParseEnvVarImplicitMaps(c *C) { readonly := make(map[string]interface{}) readonly["enabled"] = true maintenance := make(map[string]interface{}) maintenance["readonly"] = readonly suite.expectedConfig.Storage["maintenance"] = maintenance os.Setenv("REGISTRY_STORAGE_MAINTENANCE_READONLY_ENABLED", "true") config, err := Parse(bytes.NewReader([]byte(configYamlV0_1))) c.Assert(err, IsNil) c.Assert(config, DeepEquals, suite.expectedConfig) } // TestParseEnvWrongTypeMap validates that incorrectly attempting to unmarshal a // string over existing map fails. func (suite *ConfigSuite) TestParseEnvWrongTypeMap(c *C) { os.Setenv("REGISTRY_STORAGE_S3", "somestring") _, err := Parse(bytes.NewReader([]byte(configYamlV0_1))) c.Assert(err, NotNil) } // TestParseEnvWrongTypeStruct validates that incorrectly attempting to // unmarshal a string into a struct fails. func (suite *ConfigSuite) TestParseEnvWrongTypeStruct(c *C) { os.Setenv("REGISTRY_STORAGE_LOG", "somestring") _, err := Parse(bytes.NewReader([]byte(configYamlV0_1))) c.Assert(err, NotNil) } // TestParseEnvWrongTypeSlice validates that incorrectly attempting to // unmarshal a string into a slice fails. func (suite *ConfigSuite) TestParseEnvWrongTypeSlice(c *C) { os.Setenv("REGISTRY_LOG_HOOKS", "somestring") _, err := Parse(bytes.NewReader([]byte(configYamlV0_1))) c.Assert(err, NotNil) } // TestParseEnvMany tests several environment variable overrides. // The result is not checked - the goal of this test is to detect panics // from misuse of reflection. func (suite *ConfigSuite) TestParseEnvMany(c *C) { os.Setenv("REGISTRY_VERSION", "0.1") os.Setenv("REGISTRY_LOG_LEVEL", "debug") os.Setenv("REGISTRY_LOG_FORMATTER", "json") os.Setenv("REGISTRY_LOG_HOOKS", "json") os.Setenv("REGISTRY_LOG_FIELDS", "abc: xyz") os.Setenv("REGISTRY_LOG_HOOKS", "- type: asdf") os.Setenv("REGISTRY_LOGLEVEL", "debug") os.Setenv("REGISTRY_STORAGE", "s3") os.Setenv("REGISTRY_AUTH_PARAMS", "param1: value1") os.Setenv("REGISTRY_AUTH_PARAMS_VALUE2", "value2") os.Setenv("REGISTRY_AUTH_PARAMS_VALUE2", "value2") _, err := Parse(bytes.NewReader([]byte(configYamlV0_1))) c.Assert(err, IsNil) } func checkStructs(c *C, t reflect.Type, structsChecked map[string]struct{}) { for t.Kind() == reflect.Ptr || t.Kind() == reflect.Map || t.Kind() == reflect.Slice { t = t.Elem() } if t.Kind() != reflect.Struct { return } if _, present := structsChecked[t.String()]; present { // Already checked this type return } structsChecked[t.String()] = struct{}{} byUpperCase := make(map[string]int) for i := 0; i < t.NumField(); i++ { sf := t.Field(i) // Check that the yaml tag does not contain an _. yamlTag := sf.Tag.Get("yaml") if strings.Contains(yamlTag, "_") { c.Fatalf("yaml field name includes _ character: %s", yamlTag) } upper := strings.ToUpper(sf.Name) if _, present := byUpperCase[upper]; present { c.Fatalf("field name collision in configuration object: %s", sf.Name) } byUpperCase[upper] = i checkStructs(c, sf.Type, structsChecked) } } // TestValidateConfigStruct makes sure that the config struct has no members // with yaml tags that would be ambiguous to the environment variable parser. func (suite *ConfigSuite) TestValidateConfigStruct(c *C) { structsChecked := make(map[string]struct{}) checkStructs(c, reflect.TypeOf(Configuration{}), structsChecked) } func copyConfig(config Configuration) *Configuration { configCopy := new(Configuration) configCopy.Version = MajorMinorVersion(config.Version.Major(), config.Version.Minor()) configCopy.Loglevel = config.Loglevel configCopy.Log = config.Log configCopy.Log.Fields = make(map[string]interface{}, len(config.Log.Fields)) for k, v := range config.Log.Fields { configCopy.Log.Fields[k] = v } configCopy.Storage = Storage{config.Storage.Type(): Parameters{}} for k, v := range config.Storage.Parameters() { configCopy.Storage.setParameter(k, v) } configCopy.Reporting = Reporting{ Bugsnag: BugsnagReporting{config.Reporting.Bugsnag.APIKey, config.Reporting.Bugsnag.ReleaseStage, config.Reporting.Bugsnag.Endpoint}, NewRelic: NewRelicReporting{config.Reporting.NewRelic.LicenseKey, config.Reporting.NewRelic.Name, config.Reporting.NewRelic.Verbose}, } configCopy.Auth = Auth{config.Auth.Type(): Parameters{}} for k, v := range config.Auth.Parameters() { configCopy.Auth.setParameter(k, v) } configCopy.Notifications = Notifications{Endpoints: []Endpoint{}} for _, v := range config.Notifications.Endpoints { configCopy.Notifications.Endpoints = append(configCopy.Notifications.Endpoints, v) } configCopy.HTTP.Headers = make(http.Header) for k, v := range config.HTTP.Headers { configCopy.HTTP.Headers[k] = v } return configCopy }