make sysinfo provider a setting

src/sysinfo.js

@@ -1,35 +1,25 @@
 'use strict';
 
 exports = module.exports = {
-    getPublicIp: getPublicIp,
+    getServerIp: getServerIp,
 
-    hasIPv6: hasIPv6,
-    provider: provider
+    hasIPv6: hasIPv6
 };
 
 var assert = require('assert'),
     ec2 = require('./sysinfo/ec2.js'),
     fs = require('fs'),
     generic = require('./sysinfo/generic.js'),
-    paths = require('./paths.js'),
     scaleway = require('./sysinfo/scaleway.js'),
-    safe = require('safetydance');
+    settings = require('./settings.js');
 
-let gProvider = null;
-
-function provider() {
-    if (gProvider) return gProvider;
-
-    gProvider = safe.fs.readFileSync(paths.PROVIDER_FILE, 'utf8');
-    if (!gProvider) return gProvider = 'generic';
-
-    return gProvider.trim();
-}
-
-function getApi(callback) {
+function getApi(config, callback) {
+    assert.strictEqual(typeof config, 'object');
     assert.strictEqual(typeof callback, 'function');
 
-    switch (provider()) {
+    const provider = config.provider || 'generic';
+
+    switch (provider) {
     case 'ec2': return callback(null, ec2);
     case 'lightsail': return callback(null, ec2);
     case 'ami': return callback(null, ec2);
@@ -38,13 +28,17 @@ function getApi(callback) {
     }
 }
 
-function getPublicIp(callback) {
+function getServerIp(callback) {
     assert.strictEqual(typeof callback, 'function');
 
-    getApi(function (error, api) {
+    settings.getSysinfoConfig(function (error, config) {
         if (error) return callback(error);
 
-        api.getPublicIp(callback);
+        getApi(config, function (error, api) {
+            if (error) return callback(error);
+
+            api.getServerIp(config, callback);
+        });
     });
 }