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env.go
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/
env.go
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//
// Copyright (c) SAS Institute Inc.
//
// 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 (
"errors"
"os"
)
// FromEnvironment tries to build a client-only config from environment variables. If none are set then returns nil.
func FromEnvironment() (*Config, error) {
remoteURL := os.Getenv("RELIC_URL")
if remoteURL == "" {
return nil, nil
}
clientCert := os.Getenv("RELIC_CLIENT_CERT")
clientKey := os.Getenv("RELIC_CLIENT_KEY")
if clientCert == "" {
return nil, errors.New("RELIC_CLIENT_CERT must be set when RELIC_URL is set")
}
if clientKey == "" {
clientKey = clientCert
}
cfg := &Config{
Remote: &RemoteConfig{
DirectoryURL: remoteURL,
KeyFile: clientKey,
CertFile: clientCert,
CaCert: os.Getenv("RELIC_CACERT"),
},
}
return cfg, cfg.Normalize("<env>")
}