Support wait watching provisioning task

Addresses #67

client-cli/cli_lib/provisioner.py

@@ -556,7 +556,7 @@ def profile_remove(config, name):
         
     return retvalue, response.json()['message']
 
-def vm_create(config, name, profile):
+def vm_create(config, name, profile, wait_flag):
     """
     Create a new VM named {name} with profile {profile}
 
@@ -577,14 +577,18 @@ def vm_create(config, name, profile):
 
     if response.status_code == 202:
         retvalue = True
+        if not wait_flag:
             retdata = 'Task ID: {}'.format(response.json()['task_id'])
+        else:
+            # Just return the task_id raw, instead of formatting it
+            retdata = response.json()['task_id']
     else:
         retvalue = False
         retdata = response.json()['message']
         
     return retvalue, retdata
 
-def task_status(config, task_id):
+def task_status(config, task_id, is_watching=False):
     """
     Get information about provisioner job {task_id}
 
@@ -602,6 +606,11 @@ def task_status(config, task_id):
     if response.status_code == 200:
         retvalue = True
         respjson = response.json()
+
+        if is_watching:
+            # Just return the raw JSON to the watching process instead of formatting it
+            return respjson
+
         job_state = respjson['state']
         if job_state == 'RUNNING':
             retdata = 'Job state: RUNNING\nStage: {}/{}\nStatus: {}'.format(

client-cli/pvc.py

@@ -27,6 +27,7 @@ import os
 import subprocess
 import difflib
 import re
+import time
 import colorama
 import yaml
 import json
@@ -2928,13 +2929,62 @@ def provisioner_profile_remove(name, confirm_flag):
 @click.argument(
     'profile'
 )
-def provisioner_create(name, profile):
+@click.option(
+    '-w', '--wait', 'wait_flag',
+    is_flag=True, default=False,
+    help='Wait for provisioning to complete, showing progress'
+)
+def provisioner_create(name, profile, wait_flag):
     """
     Create a new VM NAME with profile PROFILE.
     """
-    retcode, retdata = pvc_provisioner.vm_create(config, name, profile)
+    retcode, retdata = pvc_provisioner.vm_create(config, name, profile, wait_flag)
-    cleanup(retcode, retdata)
 
+    if retcode and wait_flag:
+        task_id = retdata
+
+        click.echo("Task ID: {}".format(task_id))
+        click.echo()
+
+        # Wait for the task to start
+        click.echo("Waiting for task to start...", nl=False)
+        while True:
+            time.sleep(1)
+            task_status = pvc_provisioner.task_status(config, task_id, is_watching=True)
+            if task_status.get('state') != 'PENDING':
+                break
+            click.echo(".", nl=False)
+        click.echo(" done.")
+        click.echo()
+
+        # Start following the task state, updating progress as we go
+        with click.progressbar(length=task_status.get('total'), show_eta=False) as bar:
+            last_task = 0
+            maxlen = 0
+            while True:
+                time.sleep(1)
+                if task_status.get('state') != 'RUNNING':
+                    if task_status.get('state') == 'COMPLETED':
+                        time.sleep(1)
+                        bar.update(1)
+                    break
+                if task_status.get('current') > last_task:
+                    current_task = int(task_status.get('current'))
+                    bar.update(current_task - last_task)
+                    last_task = current_task
+                    # The extensive spaces at the end cause this to overwrite longer previous messages
+                    curlen = len(str(task_status.get('status')))
+                    if curlen > maxlen:
+                        maxlen = curlen
+                    lendiff = maxlen - curlen
+                    overwrite_whitespace = " " * lendiff
+                    click.echo("  " + task_status.get('status') + overwrite_whitespace, nl=False)
+                task_status = pvc_provisioner.task_status(config, task_id, is_watching=True)
+
+        click.echo()
+        retdata = task_status.get('state') + ": " + task_status.get('status')
+
+    cleanup(retcode, retdata)
 
 ###############################################################################
 # pvc provisioner status