[PATCH 3/3] build.py: Add support for log and run filename changes

[Mark Hatle <mark.hatle@windriver.com>]

The format of the log file and run file are now selectable
using BB_LOGFMT and BB_RUNFMT, respectively.

The following values may be used:

{task} - task name
{taskfunc} - task.func or func, if task==func
{func} - function name, only available in BB_RUNFMT
{pid} - pid

The log/run files may be placed into a subdirectory that
is relative to T.

Default BB_LOGFMT is: log.{task}.{pid}
Default BB_RUNFMT is: run.{func}.{pid}

Signed-off-by: Mark Hatle <mark.hatle@windriver.com>
---
 lib/bb/build.py |   20 +++++++++++++++++---
 1 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/lib/bb/build.py b/lib/bb/build.py
index 2fbe120..e867894 100644
--- a/lib/bb/build.py
+++ b/lib/bb/build.py
@@ -174,8 +174,19 @@ def exec_func(func, d, dirs = None):
         lockfiles = None
 
     tempdir = data.getVar('T', d, 1)
-    bb.utils.mkdirhier(tempdir)
-    runfile = os.path.join(tempdir, 'run.{0}.{1}'.format(func, os.getpid()))
+
+    # or func allows items to be executed outside of the normal
+    # task set, such as buildhistory
+    task = data.getVar('BB_RUNTASK', d, 1) or func
+    if task == func:
+        taskfunc = task
+    else:
+        taskfunc = "%s.%s" % (task, func)
+
+    runfmt = data.getVar('BB_RUNFMT', d, 1) or "run.{func}.{pid}"
+    runfn = runfmt.format(taskfunc=taskfunc, task=task, func=func, pid=os.getpid())
+    runfile = os.path.join(tempdir, runfn)
+    bb.utils.mkdirhier(os.path.dirname(runfile))
 
     with bb.utils.fileslocked(lockfiles):
         if ispython:
@@ -302,7 +313,8 @@ def _exec_task(fn, task, d, quieterr):
     bb.utils.mkdirhier(tempdir)
 
     # Determine the logfile to generate
-    logbase = 'log.{0}.{1}'.format(task, os.getpid())
+    logfmt = localdata.getVar('BB_LOGFMT', True) or 'log.{task}.{pid}'
+    logbase = logfmt.format(task=task, pid=os.getpid())
 
     # Document the order of the tasks...
     logorder = os.path.join(tempdir, 'log.task_order')
@@ -338,6 +350,7 @@ def _exec_task(fn, task, d, quieterr):
     # Handle logfiles
     si = file('/dev/null', 'r')
     try:
+        bb.utils.mkdirhier(os.path.dirname(logfn))
         logfile = file(logfn, 'w')
     except OSError:
         logger.exception("Opening log file '%s'", logfn)
@@ -364,6 +377,7 @@ def _exec_task(fn, task, d, quieterr):
     bblogger.addHandler(errchk)
 
     localdata.setVar('BB_LOGFILE', logfn)
+    localdata.setVar('BB_RUNTASK', task)
 
     event.fire(TaskStarted(task, localdata), localdata)
     try:
-- 
1.7.3.4