fix docker email fixer

Fixing post-processors requires some smart parsing of the template.
Let's turn that logic into a helper and use it everywhere.

fix/fixer_docker_email.go

@@ -7,8 +7,8 @@ type FixerDockerEmail struct{}
 func (FixerDockerEmail) Fix(input map[string]interface{}) (map[string]interface{}, error) {
 	// Our template type we'll use for this fixer only
 	type template struct {
-		Builders       []map[string]interface{}
-		PostProcessors []map[string]interface{} `mapstructure:"post-processors"`
+		Builders []map[string]interface{}
+		PP       `mapstructure:",squash"`
 	}
 
 	// Decode the input into our structure, if we can
@@ -27,7 +27,9 @@ func (FixerDockerEmail) Fix(input map[string]interface{}) (map[string]interface{
 	}
 
 	// Go through each post-processor and delete `docker_login` if present
-	for _, pp := range tpl.PostProcessors {
+	pps := tpl.postProcessors()
+
+	for _, pp := range pps {
 		_, ok := pp["login_email"]
 		if !ok {
 			continue
@@ -36,7 +38,7 @@ func (FixerDockerEmail) Fix(input map[string]interface{}) (map[string]interface{
 	}
 
 	input["builders"] = tpl.Builders
-	input["post-processors"] = tpl.PostProcessors
+	input["post-processors"] = pps
 	return input, nil
 }
 

fix/fixer_pp_manifest_filename.go

@@ -11,7 +11,7 @@ func (FixerManifestFilename) Fix(input map[string]interface{}) (map[string]inter
 
 	// Our template type we'll use for this fixer only
 	type template struct {
-		PostProcessors []interface{} `mapstructure:"post-processors"`
+		PP `mapstructure:",squash"`
 	}
 
 	// Decode the input into our structure, if we can
@@ -21,20 +21,7 @@ func (FixerManifestFilename) Fix(input map[string]interface{}) (map[string]inter
 	}
 
 	// Go through each post-processor and get out all the complex configs
-	pps := make([]map[string]interface{}, 0, len(tpl.PostProcessors))
-	for _, rawPP := range tpl.PostProcessors {
-		switch pp := rawPP.(type) {
-		case string:
-		case map[string]interface{}:
-			pps = append(pps, pp)
-		case []interface{}:
-			for _, innerRawPP := range pp {
-				if innerPP, ok := innerRawPP.(map[string]interface{}); ok {
-					pps = append(pps, innerPP)
-				}
-			}
-		}
-	}
+	pps := tpl.postProcessors()
 
 	for _, pp := range pps {
 		ppTypeRaw, ok := pp["type"]
@@ -60,7 +47,7 @@ func (FixerManifestFilename) Fix(input map[string]interface{}) (map[string]inter
 
 	}
 
-	input["post-processors"] = tpl.PostProcessors
+	input["post-processors"] = pps
 	return input, nil
 }
 

fix/fixer_pp_vagrant_override.go

@@ -12,7 +12,7 @@ type FixerVagrantPPOverride struct{}
 func (FixerVagrantPPOverride) Fix(input map[string]interface{}) (map[string]interface{}, error) {
 	// Our template type we'll use for this fixer only
 	type template struct {
-		PostProcessors []interface{} `mapstructure:"post-processors"`
+		PP `mapstructure:",squash"`
 	}
 
 	// Decode the input into our structure, if we can
@@ -21,21 +21,7 @@ func (FixerVagrantPPOverride) Fix(input map[string]interface{}) (map[string]inte
 		return nil, err
 	}
 
-	// Go through each post-processor and get out all the complex configs
-	pps := make([]map[string]interface{}, 0, len(tpl.PostProcessors))
-	for _, rawPP := range tpl.PostProcessors {
-		switch pp := rawPP.(type) {
-		case string:
-		case map[string]interface{}:
-			pps = append(pps, pp)
-		case []interface{}:
-			for _, innerRawPP := range pp {
-				if innerPP, ok := innerRawPP.(map[string]interface{}); ok {
-					pps = append(pps, innerPP)
-				}
-			}
-		}
-	}
+	pps := tpl.postProcessors()
 
 	// Go through each post-processor and make the fix if necessary
 	possible := []string{"aws", "digitalocean", "virtualbox", "vmware"}
@@ -66,7 +52,7 @@ func (FixerVagrantPPOverride) Fix(input map[string]interface{}) (map[string]inte
 		}
 	}
 
-	input["post-processors"] = tpl.PostProcessors
+	input["post-processors"] = pps
 	return input, nil
 }
 

fix/helpers.go

@@ -0,0 +1,25 @@
+package fix
+
+// PP is a convenient way to interact with the post-processors within a fixer
+type PP struct {
+	PostProcessors []interface{} `mapstructure:"post-processors"`
+}
+
+// postProcessors converts the variable structure of the template to a list
+func (pp *PP) postProcessors() []map[string]interface{} {
+	pps := make([]map[string]interface{}, 0, len(pp.PostProcessors))
+	for _, rawPP := range pp.PostProcessors {
+		switch pp := rawPP.(type) {
+		case string:
+		case map[string]interface{}:
+			pps = append(pps, pp)
+		case []interface{}:
+			for _, innerRawPP := range pp {
+				if innerPP, ok := innerRawPP.(map[string]interface{}); ok {
+					pps = append(pps, innerPP)
+				}
+			}
+		}
+	}
+	return pps
+}