mirror of https://github.com/docker/compose.git
82 lines
2.2 KiB
Go
82 lines
2.2 KiB
Go
/*
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Copyright 2020 Docker Compose CLI 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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package config
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import (
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"fmt"
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"os"
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"path/filepath"
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"github.com/pkg/errors"
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"github.com/spf13/pflag"
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"github.com/docker/compose-cli/api/config"
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)
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// ConfigFlags are the global CLI flags
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// nolint stutter
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type ConfigFlags struct {
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Config string
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}
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// AddConfigFlags adds persistent (global) flags
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func (c *ConfigFlags) AddConfigFlags(flags *pflag.FlagSet) {
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flags.StringVar(&c.Config, config.ConfigFlagName, confDir(), "Location of the client config files `DIRECTORY`")
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}
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func confDir() string {
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env := os.Getenv("DOCKER_CONFIG")
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if env != "" {
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return env
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}
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home, _ := os.UserHomeDir()
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return filepath.Join(home, config.ConfigFileDir)
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}
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// GetCurrentContext get current context based on opts, env vars
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func GetCurrentContext(contextOpt string, configDir string, hosts []string) string {
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// host and context flags cannot be both set at the same time -- the local backend enforces this when resolving hostname
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// -H flag disables context --> set default as current
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if len(hosts) > 0 {
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return "default"
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}
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// DOCKER_HOST disables context --> set default as current
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if _, present := os.LookupEnv("DOCKER_HOST"); present {
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return "default"
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}
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res := contextOpt
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if res == "" {
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// check if DOCKER_CONTEXT env variable was set
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if _, present := os.LookupEnv("DOCKER_CONTEXT"); present {
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res = os.Getenv("DOCKER_CONTEXT")
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}
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if res == "" {
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config, err := config.LoadFile(configDir)
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if err != nil {
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fmt.Fprintln(os.Stderr, errors.Wrap(err, "WARNING"))
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return "default"
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}
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res = config.CurrentContext
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}
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}
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if res == "" {
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res = "default"
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}
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return res
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}
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