From 3b5031230717d7430951dfa4a148b7f83bad514b Mon Sep 17 00:00:00 2001
From: Paul Eggleton <paul.eggleton@linux.intel.com>
Date: Fri, 10 Jul 2015 14:51:40 +0100
Subject: bitbake: lib/bb: set up infrastructure for shell message functions

Create a fifo under ${T} for each running task that can be used by the
task to send events back to BitBake. The purpose of this is to allow
OpenEmbedded's logging.bbclass (which provides shell function
equivalents for bb.warn(), bb.note() etc.) to have those functions
trigger the appropriate events within BitBake so that messages are shown
through the BitBake UI rather than just in the task log; to do that we
just call the python functions.

Part of the fix for [YOCTO #5275].

(Bitbake rev: bae330a1f8a59a912eca71177b3c6ba7c92a2f38)

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
---
 bitbake/lib/bb/build.py | 50 ++++++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 43 insertions(+), 7 deletions(-)

(limited to 'bitbake/lib/bb/build.py')

diff --git a/bitbake/lib/bb/build.py b/bitbake/lib/bb/build.py
index 14dc5e0619..cce01feba2 100644
--- a/bitbake/lib/bb/build.py
+++ b/bitbake/lib/bb/build.py
@@ -329,14 +329,50 @@ exit $?
     else:
         logfile = sys.stdout
 
-    bb.debug(2, "Executing shell function %s" % func)
+    def readfifo(data):
+        lines = data.split('\0')
+        for line in lines:
+            splitval = line.split(' ', 1)
+            cmd = splitval[0]
+            if len(splitval) > 1:
+                value = splitval[1]
+            else:
+                value = ''
+            if cmd == 'bbplain':
+                bb.plain(value)
+            elif cmd == 'bbnote':
+                bb.note(value)
+            elif cmd == 'bbwarn':
+                bb.warn(value)
+            elif cmd == 'bberror':
+                bb.error(value)
+            elif cmd == 'bbfatal':
+                # The caller will call exit themselves, so bb.error() is
+                # what we want here rather than bb.fatal()
+                bb.error(value)
+            elif cmd == 'bbdebug':
+                splitval = value.split(' ', 1)
+                level = int(splitval[0])
+                value = splitval[1]
+                bb.debug(level, value)
 
-    try:
-        with open(os.devnull, 'r+') as stdin:
-            bb.process.run(cmd, shell=False, stdin=stdin, log=logfile)
-    except bb.process.CmdError:
-        logfn = d.getVar('BB_LOGFILE', True)
-        raise FuncFailed(func, logfn)
+    tempdir = d.getVar('T', True)
+    fifopath = os.path.join(tempdir, 'fifo.%s' % os.getpid())
+    if os.path.exists(fifopath):
+        os.unlink(fifopath)
+    os.mkfifo(fifopath)
+    with open(fifopath, 'r+') as fifo:
+        try:
+            bb.debug(2, "Executing shell function %s" % func)
+
+            try:
+                with open(os.devnull, 'r+') as stdin:
+                    bb.process.run(cmd, shell=False, stdin=stdin, log=logfile, extrafiles=[(fifo,readfifo)])
+            except bb.process.CmdError:
+                logfn = d.getVar('BB_LOGFILE', True)
+                raise FuncFailed(func, logfn)
+        finally:
+            os.unlink(fifopath)
 
     bb.debug(2, "Shell function %s finished" % func)
 
-- 
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