To test parallel loading of mail, it's handy to be able to split an existing mbox file into N mbox files in an alternating pattern (e.g. 1 2 1 2 or 1 2 3 4 1 2 3 4 etc)
Introduce tools/scripts as a place to put things like this. Signed-off-by: Daniel Axtens <[email protected]> --- tools/scripts/split_mail.py | 76 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100755 tools/scripts/split_mail.py diff --git a/tools/scripts/split_mail.py b/tools/scripts/split_mail.py new file mode 100755 index 000000000000..ce71fe16c362 --- /dev/null +++ b/tools/scripts/split_mail.py @@ -0,0 +1,76 @@ +#!/usr/bin/python3 +# Patchwork - automated patch tracking system +# Copyright (C) 2018 Daniel Axtens <[email protected]> +# +# This file is part of the Patchwork package. +# +# Patchwork is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# Patchwork is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. + +import sys +import os +import mailbox + +usage = """Split a maildir or mbox into N mboxes +in an alternating pattern + +Usage: ./split_mail.py <input> <mbox prefix> <N> + + <input>: input mbox file or Maildir + <mbox prefix>: output mbox + <mbox-prefix>-1... must not exist + <N> N-way split""" + + +in_name = sys.argv[1] +out_name = sys.argv[2] + +try: + n = int(sys.argv[3]) +except: + print("N must be an integer.") + print(" ") + print(usage) + exit(1) + +if n < 2: + print("N must be be at least 2") + print(" ") + print(usage) + exit(1) + +if not os.path.exists(in_name): + print("No input at ", in_name) + print(" ") + print(usage) + exit(1) + +print("Opening", in_name) +if os.path.isdir(in_name): + inmail = mailbox.Maildir(in_name) +else: + inmail = mailbox.mbox(in_name) + +out=[] +for i in range(n): + if os.path.exists(out_name+"-"+str(i+1)): + print("mbox already exists at ", out_name+"-"+str(i+1)) + print(" ") + print(usage) + exit(1) + + out += [mailbox.mbox(out_name+'-'+str(i+1))] + +print("Copying messages") + +for (i, msg) in enumerate(inmail): + out[i % n].add(msg) + +print("Done") -- 2.14.1 _______________________________________________ Patchwork mailing list [email protected] https://lists.ozlabs.org/listinfo/patchwork
