65 lines
1.3 KiB
Go
65 lines
1.3 KiB
Go
package context
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import (
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"encoding/json"
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"fmt"
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"io/ioutil"
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"path"
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"strings"
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"github.com/ghodss/yaml"
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"github.com/polydawn/meep"
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)
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type ResourceSet struct {
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Name string `json:"name"`
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Values map[string]interface{} `json:"values"`
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}
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type Context struct {
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Name string `json:"context"`
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Global map[string]interface{} `json:"global"`
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ResourceSets []ResourceSet `json:"include"`
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BaseDir string
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}
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type ContextLoadingError struct {
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meep.AllTraits
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Filename string
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}
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// Attempt to load and deserialise a Context from the specified file.
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func LoadContextFromFile(filename string) (*Context, error) {
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file, err := ioutil.ReadFile(filename)
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if err != nil {
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return nil, meep.New(
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&ContextLoadingError{Filename: filename},
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meep.Cause(err),
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)
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}
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var c Context
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if strings.HasSuffix(filename, "json") {
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err = json.Unmarshal(file, &c)
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} else if strings.HasSuffix(filename, "yaml") || strings.HasSuffix(filename, "yml") {
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err = yaml.Unmarshal(file, &c)
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} else {
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return nil, meep.New(
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&ContextLoadingError{Filename: filename},
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meep.Cause(fmt.Errorf("File format not supported. Must be JSON or YAML.")),
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)
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}
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if err != nil {
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return nil, meep.New(
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&ContextLoadingError{Filename: filename},
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meep.Cause(err),
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)
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}
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c.BaseDir = path.Dir(filename)
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return &c, nil
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}
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