type ConfigFn … type EnvOptionsReader … // Apply runs every ConfigFn. func (e *EnvOptionsReader) Apply(opts ...ConfigFn) { … } // GetEnvValue gets an OTLP environment variable value of the specified key // using the GetEnv function. // This function prepends the OTLP specified namespace to all key lookups. func (e *EnvOptionsReader) GetEnvValue(key string) (string, bool) { … } // WithString retrieves the specified config and passes it to ConfigFn as a string. func WithString(n string, fn func(string)) func(e *EnvOptionsReader) { … } // WithBool returns a ConfigFn that reads the environment variable n and if it exists passes its parsed bool value to fn. func WithBool(n string, fn func(bool)) ConfigFn { … } // WithDuration retrieves the specified config and passes it to ConfigFn as a duration. func WithDuration(n string, fn func(time.Duration)) func(e *EnvOptionsReader) { … } // WithHeaders retrieves the specified config and passes it to ConfigFn as a map of HTTP headers. func WithHeaders(n string, fn func(map[string]string)) func(e *EnvOptionsReader) { … } // WithURL retrieves the specified config and passes it to ConfigFn as a net/url.URL. func WithURL(n string, fn func(*url.URL)) func(e *EnvOptionsReader) { … } // WithCertPool returns a ConfigFn that reads the environment variable n as a filepath to a TLS certificate pool. If it exists, it is parsed as a crypto/x509.CertPool and it is passed to fn. func WithCertPool(n string, fn func(*x509.CertPool)) ConfigFn { … } // WithClientCert returns a ConfigFn that reads the environment variable nc and nk as filepaths to a client certificate and key pair. If they exists, they are parsed as a crypto/tls.Certificate and it is passed to fn. func WithClientCert(nc, nk string, fn func(tls.Certificate)) ConfigFn { … } func keyWithNamespace(ns, key string) string { … } func stringToHeader(value string) map[string]string { … } func createCertPool(certBytes []byte) (*x509.CertPool, error) { … }
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