add sha1 interpolation

hashicorp · Dec 27, 2015 · 5a999db · 5a999db
1 parent 4b6cda9
commit 5a999db
Showing 1 changed file with 17 additions and 0 deletions.
diff --git a/config/interpolate_funcs.go b/config/interpolate_funcs.go
@@ -2,7 +2,9 @@ package config
 
 import (
  "bytes"
+ "crypto/sha1"
  "encoding/base64"
+ "encoding/hex"
  "errors"
  "fmt"
  "io/ioutil"
@@ -38,6 +40,7 @@ func init() {
  "lower": interpolationFuncLower(),
  "replace": interpolationFuncReplace(),
  "split": interpolationFuncSplit(),
+ "sha1": interpolationFuncSha1(),
  "base64encode": interpolationFuncBase64Encode(),
  "base64decode": interpolationFuncBase64Decode(),
  "upper": interpolationFuncUpper(),
@@ -586,3 +589,17 @@ func interpolationFuncUpper() ast.Function {
  },
  }
 }
+
+func interpolationFuncSha1() ast.Function {
+ return ast.Function{
+ ArgTypes: []ast.Type{ast.TypeString},
+ ReturnType: ast.TypeString,
+ Callback: func(args []interface{}) (interface{}, error) {
+ s := args[0].(string)
+ h := sha1.New()
+ h.Write([]byte(s))
+ hash := hex.EncodeToString(h.Sum(nil))
+ return hash, nil
+ },
+ }
+}