/
config.go
116 lines (99 loc) · 2.58 KB
/
config.go
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// Copyright © 2018 The Pingaling Authors.
//
// 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 pingaling
import (
"io/ioutil"
"os"
"strings"
"github.com/pkg/errors"
)
// define External functions
var (
ioReadFile = ioutil.ReadFile
cfgYAMLDecoder = YAMLDecoder
)
// Config is a struct of configuration file data
type Config struct {
CurrentServer string `json:"current-server" yaml:"current-server"`
Servers []Server `json:"servers" yaml:"servers"`
}
// Server is the API endpoint
type Server struct {
URI string `json:"server" yaml:"server"`
Name string `json:"name" yaml:"name"`
Current bool
}
// GetServerURI returns the current serverURI
func (c *Config) GetServerURI() string {
name := c.CurrentServer
servers := c.Servers
// TODO: Can use a filter here
for _, svr := range servers {
if svr.Name == name {
return svr.URI
}
}
return ""
}
func (c *Config) ListServers() FormattedData {
currentServer := c.GetServerURI()
servers := c.Servers
headers := []string {
"Current",
"Name",
"Url",
}
data := make([]string, 0)
for _, server := range servers {
if server.URI == currentServer {
server.Current = true
}
row := []string {
FormatBool(server.Current),
server.Name,
server.URI,
}
data = append(data, strings.Join(row, "\t"))
}
return FormattedData{
Headers: headers,
Rows: data,
}
}
// NewConfig reads from .pingaling config file, write into Config struct
func (c *Config) NewConfig(cfgFile string) error {
var (
content []byte
err error
)
if cfgFile != "" {
// Use config file from the flag.
content, err = ioReadFile(cfgFile)
if err != nil {
return errors.Wrapf(err, "failed to read config: %v", cfgFile)
}
} else {
// Find home directory.
home := os.Getenv("HOME")
// Search config in home directory with name ".pingaling".
content, err = ioReadFile(home + "/.pingaling")
if err != nil {
return errors.Wrapf(err, "failed to read config %v", home+"/.pingaling")
}
}
if err = cfgYAMLDecoder(content, c); err != nil {
return errors.Wrap(err, "failed to decode config")
}
return nil
}