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| -rw-r--r-- | classes/emit_data.bbclass | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/classes/emit_data.bbclass b/classes/emit_data.bbclass new file mode 100644 index 0000000000..127af4a44c --- /dev/null +++ b/classes/emit_data.bbclass @@ -0,0 +1,55 @@ +# Emit the datastore to a file, and if it was previously emitted, display the +# differences to the user. + +EMIT_DIR = "${TMPDIR}/emit-data" +EMIT_BLACKLIST += "BUILDSTART DATE TIME DATETIME \ + __* _ PWD \ + DISPLAY XDG_SESSION_COOKIE \ + SSH_AUTH_SOCK SSH_TTY SSH_CLIENT SSH_CONNECTION \ + SESSION_MANAGER DESKTOP_SESSION COLORTERM TERM \ + XAUTHORITY GTK_RC_FILES DBUS_SESSION_BUS_ADDRESS \ + GREP_OPTIONS \ + GNOME_KEYRING GNOME_KEYRING_PID" + +def diff_datadict(d, old_data, data): + from itertools import chain + from difflib import Differ + from fnmatch import fnmatchcase + + blacklist = d.getVar("EMIT_BLACKLIST", True).split() + + keys = sorted(set(chain(old_data.iterkeys(), data.iterkeys()))) + keys = [key for key in keys + if not any(fnmatchcase(key, pat) for pat in blacklist)] + + old = ["%s: %s\n" % (key, old_data.get(key)) for key in keys] + new = ["%s: %s\n" % (key, data.get(key)) for key in keys] + return Differ().compare(old, new) + + +python do_emit_data () { + import pickle + + data = dict((key, repr(d.getVar(key, False))) for key in d.keys()) + outfile = os.path.join(d.getVar("EMIT_DIR", True), d.getVar("PF", True)) + bb.mkdirhier(os.path.dirname(outfile)) + if os.path.exists(outfile): + f = open(outfile, "rb") + old_data = pickle.load(f) + f.close() + + diff = diff_datadict(d, old_data, data) + differences = [line for line in diff if not line.startswith(" ")] + if differences: + bb.note(bb.data.expand("${PF}: data has changed:", d)) + for line in differences: + bb.note(line.rstrip()) + + pickle.dump(data, open(outfile, "wb")) +} +do_emit_data[nostamp] = "1" +addtask emit_data + +do_emit_data_all[recrdeptask] = "do_emit_data" +do_emit_data_all[nostamp] = "1" +addtask emit_data_all after do_emit_data |