hg rage

Summary: add a 'hg rage' to log info and file a task.

Test Plan:
Here's a sample run with task and paste:

[int@dev1158]~/test% hg rage
pasting the rage info:
https://phabricator.fb.com/P17065959
filing the task:
https://our.intern.facebook.com/intern/tasks/?t=5544589

Reviewers: sid0, durham

Reviewed By: durham

Differential Revision: https://phabricator.fb.com/D1660543

Tasks: 5436255

Signature: t1:1660543:1415220586:9ce4431277ccccc86e98d01ed246e12e297fcfe0

rage.py

@@ -0,0 +1,117 @@
+# Copyright 2014 Facebook Inc.
+#
+"""FBONLY: log useful diagnostics and file a task to source control oncall"""
+
+from mercurial.i18n import _
+from mercurial import cmdutil, util, commands, bookmarks, ui, extensions
+from hgext import smartlog, blackbox
+import os, socket, re, time
+
+cmdtable = {}
+command = cmdutil.command(cmdtable)
+
+@command('^rage', [], _('hg rage'))
+def rage(ui, repo):
+	"""log useful diagnostics and file a task to source control oncall
+
+	The rage command is for logging useful diagnostics about various
+	environment information and filing a task to the source control oncall.
+
+	The following basic information is included in the task description:
+
+	- unixname
+	- hostname
+	- repo location
+	- current bookmark
+
+	Your configured editor will be invoked to let you edit the task title
+	and description.
+
+	The following detailed information is uploaded to a Phabricator paste:
+
+	- all the basic information (see above)
+	- 'df -h' output
+	- 'hg sl' output
+	- 'hg config'
+	- first 20 lines of 'hg status'
+	- last 20 events from 'hg blackbox' ('hg blackbox -l 20')
+	"""
+
+	def format(pair, basic=True):
+		if basic:
+			fmt = "%s: %s\n"
+		else:
+			fmt =  "%s:\n---------------------------\n%s\n"
+		return fmt % pair
+
+	def hgcmd(func, *args, **opts):
+		ui.pushbuffer()
+		func(ui, repo, *args, **opts)
+		return ui.popbuffer()
+
+	def shcmd(cmd, input=None, check=True):
+			_, _, _, p = util.popen4(cmd)
+			out, err = p.communicate(input)
+			if check and p.returncode:
+				raise util.Abort(cmd + ' error: ' + err)
+			return out
+
+	basic = [
+		('date', time.ctime()),
+		('unixname', os.getlogin()),
+		('hostname', socket.gethostname()),
+		('repo location', repo.root),
+		('current bookmark', bookmarks.readcurrent(repo)),
+	]
+
+	ui._colormode = None
+
+	detailed = [
+		('df -h', shcmd('df -h', check=False)),
+		('hg sl', hgcmd(smartlog.smartlog)),
+		('hg config', hgcmd(commands.config)),
+		('first 20 lines of "hg status"',
+			'\n'.join(hgcmd(commands.status).splitlines()[:20])),
+		('hg blackbox -l20', hgcmd(blackbox.blackbox, limit=20)),
+	]
+
+	basic_msg = '\n'.join(map(format, basic))
+	prompt = '''Title: [hg rage] %s on %s by %s
+
+Description:
+
+%s
+HG: Edit task title and description. Lines beginning with 'HG:' are removed."
+HG: First line is the title followed by the description.
+HG: Feel free to add relevant information.
+''' % (repo.root, socket.gethostname(), os.getlogin(), basic_msg)
+
+	text = re.sub("(?m)^HG:.*(\n|$)", "", ui.edit(prompt, ui.username()))
+	lines = text.splitlines()
+	title = re.sub("(?m)^Title:\s+", "", lines[0])
+	desc = re.sub("(?m)^Description:\s+", "", '\n'.join(lines[1:]))
+	detailed_msg = desc + '\n'.join(map(lambda x: format(x, False), detailed))
+
+	print 'pasting the rage info:'
+	paste_url = shcmd('arc paste', detailed_msg).split()[1]
+	print paste_url
+
+	desc += '\ndetailed output @ ' + paste_url
+	tag = 'hg rage'
+	oncall = shcmd('oncalls --output unixname source_control').strip()
+
+	print 'filing a task for the oncall %s:' % oncall
+	task_id = shcmd(' '.join([
+		'tasks',
+		'create',
+		'--title=' + util.shellquote(title),
+		'--pri=low',
+		'--assign=' + oncall,
+		'--sub=' + oncall,
+		'--tag=' + util.shellquote(tag),
+		'--desc=' + util.shellquote(desc),
+		])
+	)
+
+	task_num = shcmd('tasks view ' + task_id).splitlines()[0].split()[0]
+	print 'https://our.intern.facebook.com/intern/tasks/?t=' + task_num

setup.py

@@ -19,6 +19,7 @@ setup(
         'gitlookup',
         'gitrevset',
         'phrevset',
+        'rage',
         'reflog',
         'reset',
         'smartlog',