NEW: require() now supports loading JSON too (#474)

docs/_functions/global/require.md

@@ -14,7 +14,7 @@ to split your configuration across multiple files. If the path starts with a
 // dnsconfig.js
 require('kubernetes/clusters.js');
 
-D("mydomain.net", REG, PROVIDER, 
+D("mydomain.net", REG, PROVIDER,
     IncludeKubernetes()
 );
 
@@ -50,3 +50,29 @@ function includeK8Sdev() {
 
 {%endhighlight%}
 {% include endExample.html %}
+
+You can also use it to require json files and initialize variables with it:
+For Example:
+
+{% include startExample.html %}
+{% highlight js %}
+
+// dnsconfig.js
+var domains = require('./domain-ip-map.json')
+
+for (var domain in domains) {
+    D(domain, REG, PROVIDER,
+        A("@", domains[domain])
+    );
+}
+
+{%endhighlight%}
+
+{%highlight js %}
+// domain-ip-map.json
+{
+    "mydomain.net": "1.1.1.1",
+    "myotherdomain.org": "5.5.5.5"
+}
+{%endhighlight}
+{% include endExample.html %}

pkg/js/js.go

@@ -2,6 +2,7 @@ package js
 
 import (
 	"encoding/json"
+	"fmt"
 	"io/ioutil"
 	"path/filepath"
 	"strings"
@@ -95,7 +96,16 @@ func require(call otto.FunctionCall) otto.Value {
 		throw(call.Otto, err.Error())
 	}
 
-	_, err = call.Otto.Run(string(data))
+	var value otto.Value = otto.TrueValue()
+
+	// If its a json file return the json value, else default to true
+	if strings.HasSuffix(filepath.Ext(relFile), "json") {
+		cmd := fmt.Sprintf(`JSON.parse(JSON.stringify(%s))`, string(data))
+		value, err = call.Otto.Run(cmd)
+	} else {
+		_, err = call.Otto.Run(string(data))
+	}
+
 	if err != nil {
 		throw(call.Otto, err.Error())
 	}
@@ -103,7 +113,7 @@ func require(call otto.FunctionCall) otto.Value {
 	// Pop back to the old directory.
 	currentDirectory = currentDirectoryOld
 
-	return otto.TrueValue()
+	return value
 }
 
 func throw(vm *otto.Otto, str string) {

pkg/js/parse_tests/024-json-import.js

@@ -0,0 +1,8 @@
+var domains = require('./domain-ip-map.json')
+
+var domain = "foo.com"
+var ip = domains["foo.com"]
+
+D(domain,"none",
+    A("@",ip)
+);

pkg/js/parse_tests/024-json-import.json

@@ -0,0 +1,18 @@
+{
+  "registrars": [],
+  "dns_providers": [],
+  "domains": [
+    {
+      "name": "foo.com",
+      "registrar": "none",
+      "dnsProviders": {},
+      "records": [
+        {
+          "type": "A",
+          "name": "@",
+          "target": "1.1.1.1"
+        }
+      ]
+    }
+  ]
+}

pkg/js/parse_tests/domain-ip-map.json

@@ -0,0 +1,4 @@
+{
+  "foo.com": "1.1.1.1",
+  "bar.com": "5.5.5.5"
+}