fix issue where start will never resolve if droplet has been deleted

Author: trevj

src/cloud/digitalocean/provisioner.ts

@@ -72,7 +72,8 @@ class Provisioner {
     }).then((keys: KeyPair) => {
        // Get SSH keys
       this.state_.ssh = keys;
-      return this.getDroplet_(name).then((unused :any) => {
+
+      return this.getDropletByName_(name).then((unused :any) => {
         // Droplet exists so raise error
         return Promise.reject({
           'errcode': 'VM_AE',
@@ -85,23 +86,23 @@ class Provisioner {
       });
     }).then(() => {
       // Get the droplet's configuration
-      return this.doRequest_('GET', 'droplets/' + this.state_.cloud.vm.id);
-    }).then((resp: any) => {
+      return this.getDropletByName_(name);
+    }).then((droplet:any) => {
       this.sendStatus_('CLOUD_DONE_VM');
-      this.state_.cloud.vm = resp.droplet;
+      this.state_.cloud.vm = droplet;
       this.state_.network = {
         'ssh_port': 22
       };
       // Retrieve public IPv4 address
-      for (var i = 0; i < resp.droplet.networks.v4.length; i++) {
-        if (resp.droplet.networks.v4[i].type === 'public') {
-          this.state_.network['ipv4'] = resp.droplet.networks.v4[i].ip_address;
+      for (var i = 0; i < droplet.networks.v4.length; i++) {
+        if (droplet.networks.v4[i].type === 'public') {
+          this.state_.network['ipv4'] = droplet.networks.v4[i].ip_address;
         }
       }
       // Retrieve public IPv6 address
-      for (var i = 0; i < resp.droplet.networks.v6.length; i++) {
-        if (resp.droplet.networks.v6[i].type === 'public') {
-          this.state_.network['ipv6'] = resp.droplet.networks.v6[i].ip_address;
+      for (var i = 0; i < droplet.networks.v6.length; i++) {
+        if (droplet.networks.v6[i].type === 'public') {
+          this.state_.network['ipv6'] = droplet.networks.v6[i].ip_address;
         }
       }
       console.log(this.state_);
@@ -132,10 +133,10 @@ class Provisioner {
   private destroyServer_ = (name: string): Promise<void> => {
     return this.doRequest_('GET', 'droplets').then((resp: any) => {
       // Find and delete the server with the same name
-      return this.getDroplet_(name);
-    }).then((resp: any) => {
+      return this.getDropletByName_(name);
+    }).then((droplet: any) => {
       this.state_.cloud = this.state_.cloud || {};
-      this.state_.cloud.vm = this.state_.cloud.vm || resp.droplet;
+      this.state_.cloud.vm = this.state_.cloud.vm || droplet;
       // Make sure there are no actions in progress before deleting
       this.sendStatus_('CLOUD_WAITING_VM');
       return this.waitDigitalOceanActions_();
@@ -169,10 +170,10 @@ class Provisioner {
     return this.doOAuth_().then((oauthObj: any) => {
       this.state_.oauth = oauthObj;
     }).then(() => {
-      return this.getDroplet_(name);
-    }).then((resp: any) => {
+      return this.getDropletByName_(name);
+    }).then((droplet: any) => {
       this.state_.cloud = this.state_.cloud || {};
-      this.state_.cloud.vm = this.state_.cloud.vm || resp.droplet;
+      this.state_.cloud.vm = this.state_.cloud.vm || droplet;
       // Make sure there are no actions in progress before rebooting
       this.sendStatus_('CLOUD_WAITING_VM');
       return this.waitDigitalOceanActions_();
@@ -188,20 +189,12 @@ class Provisioner {
     });
   }
 
-  /**
-   * Finds a droplet with this name
-   * @param {String} droplet name, as a string
-   * @return {Promise.<Object>}, resolves with {droplet: droplet_with_name}
-   * or rejects if droplet doesn't exist
-   */
-  private getDroplet_ = (name: string) : Promise<Object> => {
+  // Resolves with the (de-serialised) droplet, rejecting if not found.
+  private getDropletByName_ = (name: string) : Promise<Object> => {
     return this.doRequest_('GET', 'droplets').then((resp: any) => {
-      // Find and delete the server with the same name
-      for (var i = 0; i < resp.droplets.length; i++) {
+      for (let i = 0; i < resp.droplets.length; i++) {
         if (resp.droplets[i].name === name) {
-          return Promise.resolve({
-            droplet: resp.droplets[i]
-          });
+          return Promise.resolve(resp.droplets[i]);
         }
       }
       return Promise.reject({