From 2ab3e4fcf5118b4606cbb98ae5fea8bd64183dec Mon Sep 17 00:00:00 2001
From: Linus Nordberg <linus@nordu.net>
Date: Tue, 22 Sep 2015 21:59:48 +0200
Subject: Split merge.py into three pieces.

---
 tools/merge_fetch.py | 97 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 tools/merge_fetch.py

(limited to 'tools/merge_fetch.py')

diff --git a/tools/merge_fetch.py b/tools/merge_fetch.py
new file mode 100644
index 0000000..a0a0396
--- /dev/null
+++ b/tools/merge_fetch.py
@@ -0,0 +1,97 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+#
+# Copyright (c) 2014-2015, NORDUnet A/S.
+# See LICENSE for licensing information.
+
+import sys
+import struct
+import time
+import subprocess
+from mergetools import get_logorder, verify_entry, get_new_entries, \
+     chunks, fsync_logorder, get_entries, write_chain, add_to_logorder
+from certtools import timing_point, build_merkle_tree
+
+def merge_fetch(args, config, localconfig):
+    paths = localconfig["paths"]
+    storagenodes = config["storagenodes"]
+    mergedb = paths["mergedb"]
+    logorderfile = mergedb + "/logorder"
+    chainsdir = mergedb + "/chains"
+    own_key = (localconfig["nodename"],
+               "%s/%s-private.pem" % (paths["privatekeys"],
+                                      localconfig["nodename"]))
+
+    timing = timing_point()
+
+    logorder = get_logorder(logorderfile)
+    timing_point(timing, "get logorder")
+
+    certsinlog = set(logorder)
+
+    new_entries_per_node = {}
+    new_entries = set()
+    entries_to_fetch = {}
+
+    for storagenode in storagenodes:
+        print >>sys.stderr, "getting new entries from", storagenode["name"]
+        sys.stderr.flush()
+        new_entries_per_node[storagenode["name"]] = \
+          set(get_new_entries(storagenode["name"],
+                              "https://%s/" % storagenode["address"],
+                              own_key, paths))
+        new_entries.update(new_entries_per_node[storagenode["name"]])
+        entries_to_fetch[storagenode["name"]] = []
+    timing_point(timing, "get new entries")
+
+    new_entries -= certsinlog
+    print >>sys.stderr, "adding", len(new_entries), "entries"
+    sys.stderr.flush()
+
+    if args.nomerge:
+        sys.exit(0)
+
+    for ehash in new_entries:
+        for storagenode in storagenodes:
+            if ehash in new_entries_per_node[storagenode["name"]]:
+                entries_to_fetch[storagenode["name"]].append(ehash)
+                break
+
+    verifycert = subprocess.Popen(
+        [paths["verifycert_bin"], paths["known_roots"]],
+        stdin=subprocess.PIPE, stdout=subprocess.PIPE)
+
+    added_entries = 0
+    for storagenode in storagenodes:
+        print >>sys.stderr, "getting %d entries from %s:" % \
+          (len(entries_to_fetch[storagenode["name"]]), storagenode["name"]),
+        sys.stderr.flush()
+        for chunk in chunks(entries_to_fetch[storagenode["name"]], 100):
+            entries = get_entries(storagenode["name"],
+                                  "https://%s/" % storagenode["address"],
+                                  own_key, paths, chunk)
+            for ehash in chunk:
+                entry = entries[ehash]
+                verify_entry(verifycert, entry, ehash)
+                write_chain(ehash, entry, chainsdir)
+                add_to_logorder(logorderfile, ehash)
+                logorder.append(ehash)
+                certsinlog.add(ehash)
+                added_entries += 1
+            print >>sys.stderr, added_entries,
+            sys.stderr.flush()
+        print >>sys.stderr
+        sys.stderr.flush()
+    fsync_logorder(logorderfile)
+    timing_point(timing, "add entries")
+    print >>sys.stderr, "added", added_entries, "entries"
+    sys.stderr.flush()
+
+    verifycert.communicate(struct.pack("I", 0))
+
+    tree = build_merkle_tree(logorder)
+    tree_size = len(logorder)
+    root_hash = tree[-1][0]
+    timestamp = int(time.time() * 1000)
+
+    return (tree_size, root_hash, timestamp)
-- 
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