Add --dashboard

Opens the dashboard URL specified in `SUPERNOVA_DASHBOARD_URL` in a web
browser.

e.g.:

If you have in your config:

    [dfw]
    SUPERNOVA_DASHBOARD_URL=https://dfw.dashboard.rackspacecloud.com/
    ... snip ...

Then:

    $ supernova --dashboard dfw

would open https://dfw.dashboard.rackspacecloud.com/ in a web browser.

Author: msabramo

.supernova

@@ -1,5 +1,6 @@
 # This is an example config for use with tests
 [dfw]
+SUPERNOVA_DASHBOARD_URL=https://dfw.dashboard.rackspacecloud.com/
 SUPERNOVA_GROUP=raxusa
 OS_AUTH_URL=https://identity.api.rackspacecloud.com/v2.0/
 OS_AUTH_SYSTEM=rackspace

supernova/executable.py

@@ -18,6 +18,7 @@
 to run
 """
 import sys
+import webbrowser
 
 
 import click
@@ -93,6 +94,8 @@ def print_env_short_list(ctx, param, value):
               help="Display the least amount of output possible")
 @click.option('--echo', '-e', default=None, is_flag=True,
               help="Print the specified environment and exit")
+@click.option('--dashboard', '-D', default=None, is_flag=True,
+              help="Open dashboard in browser for specified environment")
 @click.argument('environment', nargs=1)
 @click.argument('command', nargs=-1)
 @click.version_option()
@@ -104,7 +107,7 @@ def print_env_short_list(ctx, param, value):
               help="List all configured environments in shorter format")
 @click.pass_context
 def run_supernova(ctx, executable, debug, quiet, environment, command, conf,
-                  echo):
+                  echo, dashboard):
     """
     You can use supernova with many OpenStack clients and avoid the pain of
     managing multiple sets of environment variables.  Getting started is easy
@@ -154,6 +157,7 @@ def run_supernova(ctx, executable, debug, quiet, environment, command, conf,
         'executable': executable,
         'quiet': quiet,
         'echo': echo,
+        'dashboard': dashboard,
     }
 
     # If the user specified a single environment, we need to verify that the
@@ -176,6 +180,21 @@ def run_supernova(ctx, executable, debug, quiet, environment, command, conf,
             click.echo('{0}={1}'.format(k, env[k]))
         ctx.exit(0)
 
+    if supernova_args['dashboard']:
+        if len(envs) > 1:
+            msg = ("\nCan't open dashboard for a group of environments.\n"
+                   "Specify a single environment when using --dashboard.")
+            click.echo(msg)
+            ctx.exit(1)
+        url = nova_creds[envs[0]].get('SUPERNOVA_DASHBOARD_URL')
+        if url is None:
+            msg = ("\nNo SUPERNOVA_DASHBOARD_URL specified "
+                   "for environment: %s" % envs[0])
+            click.echo(msg)
+            ctx.exit(1)
+        webbrowser.open(url)
+        ctx.exit(0)
+
     if len(command) == 0:
         msg = ("\nMissing arguments to pass to executable  Run supernova "
                "--help for examples.\n".format(envs[0]))

tests/test_executable.py

@@ -1,3 +1,5 @@
+import webbrowser
+
 from click.testing import CliRunner
 
 
@@ -111,6 +113,26 @@ def test_broken_configuration_file(self):
         assert result.exit_code != 0
         assert "There's an error in your configuration file" in result.output
 
+    def test_dashboard(self, monkeypatch):
+        def mockreturn(url):
+            return False
+        monkeypatch.setattr(webbrowser, "open", mockreturn)
+        runner = CliRunner()
+        result = runner.invoke(executable.run_supernova, ['--dashboard', 'dfw'])
+        assert result.exit_code == 0
+
+    def test_dashboard_group(self):
+        runner = CliRunner()
+        result = runner.invoke(executable.run_supernova, ['--dashboard', 'raxusa'])
+        assert result.exit_code == 1
+        assert 'group of environments' in result.output
+
+    def test_dashboard_no_url(self):
+        runner = CliRunner()
+        result = runner.invoke(executable.run_supernova, ['--dashboard', 'hkg'])
+        assert result.exit_code == 1
+        assert 'No SUPERNOVA_DASHBOARD_URL' in result.output
+
     def test_echo(self):
         runner = CliRunner()
         result = runner.invoke(executable.run_supernova, ['--echo', 'hkg'])