fix formatting of telemetrty api metric params

Author: aflanagan

lib/monitor.js

@@ -1,3 +1,4 @@
+const qs = require('qs')
 const Errors = require('./errors')
 
 class Monitor {
@@ -82,7 +83,14 @@ class Monitor {
 
     async ping(params={}) {
         try {
-            await this._api.axios.get(this._api.pingUrl(this.key), {params: this._cleanParams(params)})
+            let resp = await this._api.axios.get(
+                this._api.pingUrl(this.key), {
+                    params,
+                    paramsSerializer: (params) => {
+                        return qs.stringify(this._cleanParams(params), { arrayFormat: 'repeat', encode: false})
+                      }
+                })
+
             return true
         } catch(e) {
             console.error(e)
@@ -93,7 +101,10 @@ class Monitor {
     _cleanParams(params={}) {
         let allowedParams = {
             state: params.state || null,
-            message: typeof params === 'string' ? params : params.message ? params.message : null,
+            message: typeof params === 'string'
+                ? encodeURIComponent(params)
+                : params.message
+                    ? encodeURIComponent(params.message) : null,
             metric: null,
             series: params.series || null,
             host: params.host ||  process.env.HOSTNAME || null,