[OE-core] [PATCHv3 05/30] bb/tinfoil: run_command handle busy status in bitbake server

[Aníbal Limón]

When tinfoil request a command to bitbake is handled in async
manner [1], sometimes is this ends on return a Busy status.

This is a workaround a needs to be fixed in proper manner
inside bitbake code.

For example when running clientComplete and buildFile is on progress,

  ERROR: Function failed: base_do_unpack
  Traceback (most recent call last):
    File "/home/alimon/repos/poky/scripts/lib/devtool/standard.py", line
  797, in modify
      initial_rev = _extract_source(srctree, args.keep_temp, args.branch,
  False, rd, tinfoil)
    File "/home/alimon/repos/poky/scripts/lib/devtool/standard.py", line
  562, in _extract_source
      runtask(fn, 'unpack')
    File "/home/alimon/repos/poky/scripts/lib/devtool/standard.py", line
  552, in runtask
      raise DevtoolError('Task do_%s failed' % task)
  devtool.DevtoolError: Task do_unpack failed

  During handling of the above exception, another exception occurred:

  Traceback (most recent call last):
    File "/home/alimon/repos/poky/scripts/devtool", line 351, in <module>
      ret = main()
    File "/home/alimon/repos/poky/scripts/devtool", line 338, in main
      ret = args.func(args, config, basepath, workspace)
    File "/home/alimon/repos/poky/scripts/lib/devtool/standard.py", line
  864, in modify
      tinfoil.shutdown()
    File "/home/alimon/repos/poky/bitbake/lib/bb/tinfoil.py", line 427, in
  shutdown
      self.run_command('clientComplete')
    File "/home/alimon/repos/poky/bitbake/lib/bb/tinfoil.py", line 320, in
  run_command
      raise TinfoilCommandFailed(result[1])
  bb.tinfoil.TinfoilCommandFailed: Busy (buildFile in progress)

Signed-off-by: Aníbal Limón <anibal.limon at linux.intel.com>
---
 bitbake/lib/bb/tinfoil.py | 24 +++++++++++++++++++-----
 1 file changed, 19 insertions(+), 5 deletions(-)

diff --git a/bitbake/lib/bb/tinfoil.py b/bitbake/lib/bb/tinfoil.py
index fb0da622433..7f7809ea41c 100644
--- a/bitbake/lib/bb/tinfoil.py
+++ b/bitbake/lib/bb/tinfoil.py
@@ -21,6 +21,7 @@ import os
 import sys
 import atexit
 import re
+import time
 from collections import OrderedDict, defaultdict
 
 import bb.cache
@@ -298,7 +299,7 @@ class Tinfoil:
         config_params = TinfoilConfigParameters(config_only=False)
         self.run_actions(config_params)
 
-    def run_command(self, command, *params):
+    def run_command(self, command, *params, ntries=0):
         """
         Run a command on the server (as implemented in bb.command).
         Note that there are two types of command - synchronous and
@@ -315,9 +316,22 @@ class Tinfoil:
         commandline = [command]
         if params:
             commandline.extend(params)
-        result = self.server_connection.connection.runCommand(commandline)
-        if result[1]:
-            raise TinfoilCommandFailed(result[1])
+
+        # XXX: Tinfoil commands are run by Cooker in async mode so gives
+        # some time to get done.
+        result = None
+        while True:
+            result = self.server_connection.connection.runCommand(commandline)
+            if not result[1]:
+                break
+
+            if ntries == 0:
+                raise TinfoilCommandFailed(result[1])
+            elif 'Busy' in result[1]:
+                ntries = ntries - 1
+                time.sleep(1)
+                continue
+
         return result[0]
 
     def set_event_mask(self, eventlist):
@@ -424,7 +438,7 @@ class Tinfoil:
 
     def shutdown(self):
         if self.server_connection:
-            self.run_command('clientComplete')
+            self.run_command('clientComplete', ntries=1)
             _server_connections.remove(self.server_connection)
             bb.event.ui_queue = []
             self.server_connection.terminate()
-- 
2.11.0