70 lines
1.6 KiB
Go
70 lines
1.6 KiB
Go
package aws
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import (
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"log"
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"regexp"
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"github.com/aws/aws-sdk-go/aws"
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)
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// diffTags takes our tags locally and the ones remotely and returns
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// the set of tags that must be created, and the set of tags that must
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// be destroyed.
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func diffTagsGeneric(oldTags, newTags map[string]interface{}) (map[string]*string, map[string]*string) {
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// First, we're creating everything we have
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create := make(map[string]*string)
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for k, v := range newTags {
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create[k] = aws.String(v.(string))
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}
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// Build the map of what to remove
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remove := make(map[string]*string)
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for k, v := range oldTags {
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old, ok := create[k]
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if !ok || old != aws.String(v.(string)) {
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// Delete it!
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remove[k] = aws.String(v.(string))
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}
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}
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return create, remove
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}
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// tagsFromMap returns the tags for the given map of data.
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func tagsFromMapGeneric(m map[string]interface{}) map[string]*string {
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result := make(map[string]*string)
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for k, v := range m {
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if !tagIgnoredGeneric(k) {
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result[k] = aws.String(v.(string))
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}
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}
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return result
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}
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// tagsToMap turns the tags into a map.
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func tagsToMapGeneric(ts map[string]*string) map[string]string {
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result := make(map[string]string)
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for k, v := range ts {
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if !tagIgnoredGeneric(k) {
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result[k] = aws.StringValue(v)
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}
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}
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return result
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}
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// compare a tag against a list of strings and checks if it should
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// be ignored or not
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func tagIgnoredGeneric(k string) bool {
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filter := []string{"^aws:"}
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for _, v := range filter {
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log.Printf("[DEBUG] Matching %v with %v\n", v, k)
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if r, _ := regexp.MatchString(v, k); r == true {
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log.Printf("[DEBUG] Found AWS specific tag %s, ignoring.\n", k)
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return true
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}
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}
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return false
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}
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