X-Git-Url: http://git.vrable.net/?a=blobdiff_plain;f=cleaner%2Fcleaner;h=7b50c73e7a1113317f822b963739b66ca254f2de;hb=8ff0fd08d6e1cc97cdb7e94b7cd97dc28c29e674;hp=4cda7c7f95ec70dd2742d3442625cb2a52f19954;hpb=0f7d13b7c5329e3aebe1bfa82fc859f16f2e09e5;p=bluesky.git

diff --git a/cleaner/cleaner b/cleaner/cleaner
index 4cda7c7..7b50c73 100755
--- a/cleaner/cleaner
+++ b/cleaner/cleaner
@@ -7,6 +7,30 @@
 #
 # Copyright (C) 2010  The Regents of the University of California
 # Written by Michael Vrable <mvrable@cs.ucsd.edu>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+# 3. Neither the name of the University nor the names of its contributors
+#    may be used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
 
 import base64, os, re, struct, sys, time
 import boto
@@ -21,6 +45,15 @@ HEADER_SIZE = struct.calcsize(HEADER_FORMAT)
 
 CHECKPOINT_MAGIC = struct.pack('<Q', 0x7ad7dafb42a498b4)
 
+# Log file to write benchmark data to
+benchlog = None
+def benchlog_write(msg, *args):
+    m = msg % args
+    print "LOG:", m
+    if benchlog is not None:
+        benchlog.write(msg % args)
+        benchlog.write("\n")
+
 class ITEM_TYPE:
     DATA = '1'
     INODE = '2'
@@ -37,6 +70,8 @@ class Backend:
         m = re.match(r"^log-(\d+)-(\d+)$", name)
         if m: return (int(m.group(1)), int(m.group(2)))
 
+    def dump_stats(self):
+        pass
 
 class FileBackend(Backend):
     """An interface to BlueSky where the log segments are on local disk.
@@ -81,6 +116,7 @@ def retry_wrap(method):
                 return method(self, *args, **kwargs)
             except:
                 print >>sys.stderr, "S3 operation failed, retrying..."
+                print >>sys.stderr, "  %s %s %s" % (method, args, kwargs)
                 self.connect()
                 time.sleep(1.0)
         return method(self, *args, **kwargs)
@@ -94,7 +130,12 @@ class S3Backend(Backend):
         self.path = path
         self.cachedir = cachedir
         self.cache = {}
+        for f in os.listdir(cachedir):
+            self.cache[f] = True
+        #print "Initial cache contents:", list(self.cache.keys())
         self.connect()
+        self.stats_get = [0, 0]
+        self.stats_put = [0, 0]
 
     def connect(self):
         self.conn = boto.connect_s3(is_secure=False)
@@ -125,6 +166,8 @@ class S3Backend(Backend):
             fp.write(data)
             fp.close()
             self.cache[filename] = True
+            self.stats_get[0] += 1
+            self.stats_get[1] += len(data)
             if offset > 0:
                 data = data[offset:]
             if length is not None:
@@ -136,6 +179,8 @@ class S3Backend(Backend):
         k = Key(self.bucket)
         k.key = self.path + filename
         k.set_contents_from_string(data)
+        self.stats_put[0] += 1
+        self.stats_put[1] += len(data)
         if filename in self.cache:
             del self.cache[filename]
 
@@ -147,6 +192,13 @@ class S3Backend(Backend):
         if filename in self.cache:
             del self.cache[filename]
 
+    def dump_stats(self):
+        print "S3 statistics:"
+        print "GET: %d ops / %d bytes" % tuple(self.stats_get)
+        print "PUT: %d ops / %d bytes" % tuple(self.stats_put)
+        benchlog_write("s3_get: %d", self.stats_get[1])
+        benchlog_write("s3_put: %d", self.stats_put[1])
+
 class SimpleBackend(Backend):
     """An interface to the simple BlueSky test network server."""
 
@@ -268,7 +320,7 @@ class LogDirectory:
         self.dir_num = dir
         self.seq_num = 0
         for logname in backend.list(dir):
-            print "Old log file:", logname
+            #print "Old log file:", logname
             loc = backend.name_to_loc(logname[0])
             if loc is not None and loc[0] == dir:
                 self.seq_num = max(self.seq_num, loc[1] + 1)
@@ -427,12 +479,12 @@ class InodeMap:
 
         data = data[self.vvsize:]
 
-        print "Inode map:"
+        #print "Inode map:"
         for i in range(len(data) // 16):
             (start, end) = struct.unpack_from("<QQ", data, 16*i)
             imap = load_item(backend, checkpoint_record.links[i][1])
             util.add_item(imap)
-            print "[%d, %d]: %s" % (start, end, imap)
+            #print "[%d, %d]: %s" % (start, end, imap)
             for j in range(len(imap.data) // 8):
                 (inum,) = struct.unpack_from("<Q", imap.data, 8*j)
                 inode = load_item(backend, imap.links[j][1])
@@ -441,22 +493,40 @@ class InodeMap:
                 util.add_item(inode)
                 for i in inode.links:
                     util.add_item(i[1])
-                    data_segments.add(i[1][0:2])
-                print "  %d: %s (%d data segments)" % (inum, inode, len(data_segments))
+                    if i[1] is not None:
+                        data_segments.add(i[1][0:2])
+                #print "  %d: %s (%d data segments)" % (inum, inode, len(data_segments))
 
-        print
+        #print
         print "Segment utilizations:"
+        total_data = [0, 0]
+        deletions = [0, 0]
         for (s, u) in sorted(util.segments.items()):
+            for i in range(2): total_data[i] += u[i]
             print "%s: %s %s" % (s, u, float(u[1]) / u[0])
             if u[1] == 0:
-                # print "Deleting..."
-                # backend.delete(s)
-                pass
+                print "Would delete..."
+                (d, n) = backend.name_to_loc(s)
+                try:
+                    if n < self.version_vector[d]:
+                        backend.delete(s)
+                        deletions[0] += 1
+                        deletions[1] += u[0]
+                    else:
+                        print "Not deleting log file newer than checkpoint!"
+                except:
+                    print "Error determining age of log segment, keeping"
 
         self.inodes = inodes
         self.util = util
         self.updated_inodes = set()
 
+        print "%d bytes total / %d bytes used" % tuple(total_data)
+        print "would delete %d segments (%d bytes)" % tuple(deletions)
+        benchlog_write("bytes_used: %d", total_data[1])
+        benchlog_write("bytes_wasted: %d", total_data[0] - total_data[1])
+        benchlog_write("bytes_freed: %d", deletions[1])
+
     def mark_updated(self, inum):
         self.updated_inodes.add(inum)
 
@@ -515,12 +585,15 @@ class InodeMap:
 def rewrite_inode(backend, inode_map, inum, log, copy_data=True):
     inode = inode_map.inodes[inum]
     if copy_data:
-        blocks = []
+        newlinks = []
         for l in inode.links:
-            data = load_item(backend, l[1])
-            blocks.append(data)
-            log.write(data, 0)
-        inode.links = [(b.id, b.location) for b in blocks]
+            if l[1] is not None:
+                data = load_item(backend, l[1])
+                log.write(data, 0)
+                newlinks.append((data.id, data.location))
+            else:
+                newlinks.append(l)
+        inode.links = newlinks
     log.write(inode, 1)
     inode_map.mark_updated(inum)
 
@@ -546,7 +619,7 @@ def run_cleaner(backend, inode_map, log, repack_inodes=False):
     dirty_inode_data = set()
     for s in inode_map.obsolete_segments:
         filename = backend.loc_to_name(s)
-        print "Scanning", filename, "for live data"
+        #print "Scanning", filename, "for live data"
         for item in parse_log(backend.read(filename), filename):
             if item.type in (ITEM_TYPE.DATA, ITEM_TYPE.INODE):
                 if item.inum != 0:
@@ -555,26 +628,40 @@ def run_cleaner(backend, inode_map, log, repack_inodes=False):
                         dirty_inodes.add(item.inum)
                     if item.inum not in dirty_inode_data:
                         for b in inode.links:
-                            if s == b[1][0:2]:
+                            if b[1] is not None and s == b[1][0:2]:
                                 dirty_inode_data.add(item.inum)
                                 break
 
-    print "Inodes to rewrite:", dirty_inodes
-    print "Inodes with data to rewrite:", dirty_inode_data
+    #print "Inodes to rewrite:", dirty_inodes
+    #print "Inodes with data to rewrite:", dirty_inode_data
     for i in sorted(dirty_inodes.union(dirty_inode_data)):
         rewrite_inode(backend, inode_map, i, log, i in dirty_inode_data)
 
 if __name__ == '__main__':
-    backend = S3Backend("mvrable-bluesky", cachedir=".")
+    benchlog = open('cleaner.log', 'a')
+    benchlog_write("*** START CLEANER RUN ***")
+    start_time = time.time()
+    backend = S3Backend("mvrable-bluesky-west", cachedir="/tmp/bluesky-cache")
     #backend = FileBackend(".")
     chkpt = load_checkpoint_record(backend)
-    print backend.list()
+    #print backend.list()
+    log_dir = LogDirectory(backend, 1)
     imap = InodeMap()
     imap.build(backend, chkpt)
     print chkpt
 
-    log_dir = LogDirectory(backend, 1)
+    print "Version vector:", imap.version_vector
+    print "Last cleaner log file:", log_dir.seq_num - 1
+    if imap.version_vector.get(1, -1) != log_dir.seq_num - 1:
+        print "Proxy hasn't updated to latest cleaner segment yet!"
+        benchlog_write("waiting for proxy...")
+        sys.exit(0)
+
     run_cleaner(backend, imap, log_dir)
     print "Version vector:", imap.version_vector
     imap.write(backend, log_dir)
     log_dir.close_all()
+    end_time = time.time()
+    backend.dump_stats()
+    benchlog_write("running_time: %s", end_time - start_time)
+    benchlog_write("")