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structure.go
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structure.go
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package huaweicloud
import (
"encoding/json"
"github.com/huaweicloud/golangsdk/openstack/rts/v1/stacks"
"gopkg.in/yaml.v2"
)
// Takes list of pointers to strings. Expand to an array
// of raw strings and returns a []interface{}
// to keep compatibility w/ schema.NewSetschema.NewSet
func flattenStringList(list []*string) []interface{} {
vs := make([]interface{}, 0, len(list))
for _, v := range list {
vs = append(vs, *v)
}
return vs
}
func pointersMapToStringList(pointers map[string]*string) map[string]interface{} {
list := make(map[string]interface{}, len(pointers))
for i, v := range pointers {
list[i] = *v
}
return list
}
// Takes a value containing JSON string and passes it through
// the JSON parser to normalize it, returns either a parsing
// error or normalized JSON string.
func normalizeJsonString(jsonString interface{}) (string, error) {
var j interface{}
if jsonString == nil || jsonString.(string) == "" {
return "", nil
}
s := jsonString.(string)
err := json.Unmarshal([]byte(s), &j)
if err != nil {
return s, err
}
// The error is intentionally ignored here to allow empty policies to passthrough validation.
// This covers any interpolated values
bytes, _ := json.Marshal(j)
return string(bytes[:]), nil
}
// Takes a value containing YAML string and passes it through
// the YAML parser. Returns either a parsing
// error or original YAML string.
func checkYamlString(yamlString interface{}) (string, error) {
var y interface{}
if yamlString == nil || yamlString.(string) == "" {
return "", nil
}
s := yamlString.(string)
err := yaml.Unmarshal([]byte(s), &y)
if err != nil {
return s, err
}
return s, nil
}
func normalizeStackTemplate(templateString interface{}) (string, error) {
if looksLikeJsonString(templateString) {
return normalizeJsonString(templateString.(string))
}
return checkYamlString(templateString)
}
func flattenStackOutputs(stackOutputs []*stacks.Output) map[string]string {
outputs := make(map[string]string, len(stackOutputs))
for _, o := range stackOutputs {
outputs[*o.OutputKey] = *o.OutputValue
}
return outputs
}
// flattenStackParameters is flattening list of
// stack Parameters and only returning existing
// parameters to avoid clash with default values
func flattenStackParameters(stackParams map[string]string,
originalParams map[string]interface{}) map[string]string {
params := make(map[string]string, len(stackParams))
for key, value := range stackParams {
_, isConfigured := originalParams[key]
if isConfigured {
params[key] = value
}
}
return params
}
// Takes the result of flatmap.Expand for an array of strings
// and returns a []*string
func expandStringList(configured []interface{}) []string {
vs := make([]string, 0, len(configured))
for _, v := range configured {
val, ok := v.(string)
if ok && val != "" {
vs = append(vs, v.(string))
}
}
return vs
}