feat(xapi): host_restartAgent

@xen-orchestra/xapi/src/host.js

@@ -0,0 +1,17 @@
+module.exports = class Host {
+  async restartAgent(ref) {
+    const agentStartTime = +(await this.getField('host', ref, 'other_config')).agent_start_time
+
+    await this.call('host.restart_agent', ref)
+
+    await new Promise(resolve => {
+      // even though the ref could change in case of pool master restart, tests show it stays the same
+      const stopWatch = this.watchObject(ref, host => {
+        if (+host.other_config.agent_start_time > agentStartTime) {
+          stopWatch()
+          resolve()
+        }
+      })
+    })
+  }
+}

@xen-orchestra/xapi/src/index.js

@@ -206,6 +206,7 @@ function mixin(mixins) {
 }
 mixin({
   task: require('./task.js'),
+  host: require('./host.js'),
   VBD: require('./vbd.js'),
   VDI: require('./vdi.js'),
   VIF: require('./vif.js'),

packages/xo-server/src/api/host.mjs

@@ -134,7 +134,7 @@ restart.resolve = {
 // -------------------------------------------------------------------
 
 export function restartAgent({ host }) {
-  return this.getXapi(host).restartHostAgent(host._xapiId)
+  return this.getXapiObject(host).$restartAgent()
 }
 
 restartAgent.description = 'restart the Xen agent on the host'

packages/xo-server/src/xapi/index.mjs

@@ -302,10 +302,6 @@ export default class Xapi extends XapiBase {
     await this.callAsync('host.reboot', host.$ref)
   }
 
-  async restartHostAgent(hostId) {
-    await this.callAsync('host.restart_agent', this.getObject(hostId).$ref)
-  }
-
   async setRemoteSyslogHost(hostId, syslogDestination) {
     const host = this.getObject(hostId)
     await host.set_logging({