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// Copyright 2018 ThousandEyes 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 mappings
import (
"io/ioutil"
"os"
"gopkg.in/yaml.v2"
"github.com/thousandeyes/shoelaces/internal/log"
)
// Mappings struct contains YamlNetworkMaps and YamlHostnameMaps.
type Mappings struct {
NetworkMaps []YamlNetworkMap `yaml:"networkMaps"`
HostnameMaps []YamlHostnameMap `yaml:"hostnameMaps"`
}
// YamlNetworkMap struct contains an association between a CIDR network and a
// Script. It's different than mapping.NetworkMap in the sense that this
// struct can be used to parse the JSON mapping file.
type YamlNetworkMap struct {
Network string
Script YamlScript
}
// YamlHostnameMap struct contains an association between a hostname regular
// expression and a Script. It's different than mapping.HostnameMap in the
// sense that this struct can be used to parse the JSON mapping file.
type YamlHostnameMap struct {
Hostname string
Script YamlScript
}
// YamlScript holds information regarding a script. Its name, its environment
// and its parameters.
type YamlScript struct {
Name string
Environment string
Params map[string]string
}
// ParseYamlMappings parses the mappings yaml file into a Mappings struct.
func ParseYamlMappings(logger log.Logger, mappingsFile string) *Mappings {
var mappings Mappings
logger.Info("component", "config", "msg", "Reading mappings", "source", mappingsFile)
yamlFile, err := ioutil.ReadFile(mappingsFile)
if err != nil {
logger.Error(err)
os.Exit(1)
}
mappings.NetworkMaps = make([]YamlNetworkMap, 0)
mappings.HostnameMaps = make([]YamlHostnameMap, 0)
err = yaml.Unmarshal(yamlFile, &mappings)
if err != nil {
logger.Error(err)
os.Exit(1)
}
return &mappings
}
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