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bitbake: lib: implement basic task progress support

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For long-running tasks where we have some output from the task that
gives us some idea of the progress of the task (such as a percentage
complete), provide the means to scrape the output for that progress
information and show it to the user in the default knotty terminal
output in the form of a progress bar. This is implemented using a new
TaskProgress event as well as some code we can insert to do output
scanning/filtering.

Any task can fire TaskProgress events; however, if you have a shell task
whose output you wish to scan for progress information, you just need to
set the "progress" varflag on the task. This can be set to:
 * "percent" to just look for a number followed by a % sign
 * "percent:<regex>" to specify your own regex matching a percentage
   value (must have a single group which matches the percentage number)
 * "outof:<regex>" to look for the specified regex matching x out of y
   items completed (must have two groups - first group needs to be x,
   second y).
We can potentially extend this in future but this should be a good
start.

Part of the implementation for [YOCTO #5383].

(Bitbake rev: 0d275fc5b6531957a6189069b04074065bb718a0)

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Paul Eggleton
2016-06-23 22:59:05 +12:00
committed by Richard Purdie
parent 1cf6e14a6c
commit ac5e720575
6 changed files with 239 additions and 14 deletions
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bitbake/lib/bb/ui/uihelper.py
+6 -1
View File
@@ -18,6 +18,7 @@
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
import bb.build
import time
class BBUIHelper:
def __init__(self):
@@ -31,7 +32,7 @@ class BBUIHelper:
def eventHandler(self, event):
if isinstance(event, bb.build.TaskStarted):
self.running_tasks[event.pid] = { 'title' : "%s %s" % (event._package, event._task) }
self.running_tasks[event.pid] = { 'title' : "%s %s" % (event._package, event._task), 'starttime' : time.time() }
self.running_pids.append(event.pid)
self.needUpdate = True
if isinstance(event, bb.build.TaskSucceeded):
@@ -52,6 +53,10 @@ class BBUIHelper:
self.tasknumber_current = event.stats.completed + event.stats.active + event.stats.failed + 1
self.tasknumber_total = event.stats.total
self.needUpdate = True
if isinstance(event, bb.build.TaskProgress):
self.running_tasks[event.pid]['progress'] = event.progress
self.running_tasks[event.pid]['rate'] = event.rate
self.needUpdate = True
def getTasks(self):
self.needUpdate = False