initial code repo

[stor4nfv.git] / src / ceph / src / rbd_replay / rbd-replay.cc

diff --git a/src/ceph/src/rbd_replay/rbd-replay.cc b/src/ceph/src/rbd_replay/rbd-replay.cc
new file mode 100644 (file)
index 0000000..274431c
--- /dev/null
+++ b/src/ceph/src/rbd_replay/rbd-replay.cc
@@ -0,0 +1,128 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2014 Adam Crume <adamcrume@gmail.com>
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation.  See file COPYING.
+ *
+ */
+
+#include <vector>
+#include <boost/thread.hpp>
+#include "common/ceph_argparse.h"
+#include "global/global_init.h"
+#include "Replayer.hpp"
+#include "rbd_replay_debug.hpp"
+#include "ImageNameMap.hpp"
+
+
+using namespace std;
+using namespace rbd_replay;
+
+
+static const char* get_remainder(const char *string, const char *prefix) {
+  while (*prefix) {
+    if (*prefix++ != *string++) {
+      return NULL;
+    }
+  }
+  return string;
+}
+
+static void usage(const char* program) {
+  cout << "Usage: " << program << " --conf=<config_file> <replay_file>" << std::endl;
+  cout << "Options:" << std::endl;
+  cout << "  -p, --pool-name <pool>          Name of the pool to use.  Default: rbd" << std::endl;
+  cout << "  --latency-multiplier <float>    Multiplies inter-request latencies.  Default: 1" << std::endl;
+  cout << "  --read-only                     Only perform non-destructive operations." << std::endl;
+  cout << "  --map-image <rule>              Add a rule to map image names in the trace to" << std::endl;
+  cout << "                                  image names in the replay cluster." << std::endl;
+  cout << "  --dump-perf-counters            *Experimental*" << std::endl;
+  cout << "                                  Dump performance counters to standard out before" << std::endl;
+  cout << "                                  an image is closed. Performance counters may be dumped" << std::endl;
+  cout << "                                  multiple times if multiple images are closed, or if" << std::endl;
+  cout << "                                  the same image is opened and closed multiple times." << std::endl;
+  cout << "                                  Performance counters and their meaning may change between" << std::endl;
+  cout << "                                  versions." << std::endl;
+  cout << std::endl;
+  cout << "Image mapping rules:" << std::endl;
+  cout << "A rule of image1@snap1=image2@snap2 would map snap1 of image1 to snap2 of" << std::endl;
+  cout << "image2." << std::endl;
+}
+
+int main(int argc, const char **argv) {
+  vector<const char*> args;
+
+  argv_to_vec(argc, argv, args);
+  env_to_vec(args);
+  auto cct = global_init(NULL, args, CEPH_ENTITY_TYPE_CLIENT,
+                        CODE_ENVIRONMENT_UTILITY, 0);
+
+  std::vector<const char*>::iterator i;
+  string pool_name;
+  float latency_multiplier = 1;
+  bool readonly = false;
+  ImageNameMap image_name_map;
+  std::string val;
+  std::ostringstream err;
+  bool dump_perf_counters = false;
+  for (i = args.begin(); i != args.end(); ) {
+    if (ceph_argparse_double_dash(args, i)) {
+      break;
+    } else if (ceph_argparse_witharg(args, i, &val, "-p", "--pool", (char*)NULL)) {
+      pool_name = val;
+    } else if (ceph_argparse_witharg(args, i, &latency_multiplier, err, "--latency-multiplier",
+                                    (char*)NULL)) {
+      if (!err.str().empty()) {
+       cerr << err.str() << std::endl;
+       return 1;
+      }
+    } else if (ceph_argparse_flag(args, i, "--read-only", (char*)NULL)) {
+      readonly = true;
+    } else if (ceph_argparse_witharg(args, i, &val, "--map-image", (char*)NULL)) {
+      ImageNameMap::Mapping mapping;
+      if (image_name_map.parse_mapping(val, &mapping)) {
+       image_name_map.add_mapping(mapping);
+      } else {
+       cerr << "Unable to parse mapping string: '" << val << "'" << std::endl;
+       return 1;
+      }
+    } else if (ceph_argparse_flag(args, i, "-h", "--help", (char*)NULL)) {
+      usage(argv[0]);
+      return 0;
+    } else if (ceph_argparse_flag(args, i, "--dump-perf-counters", (char*)NULL)) {
+      dump_perf_counters = true;
+    } else if (get_remainder(*i, "-")) {
+      cerr << "Unrecognized argument: " << *i << std::endl;
+      return 1;
+    } else {
+      ++i;
+    }
+  }
+
+  common_init_finish(g_ceph_context);
+
+  string replay_file;
+  if (!args.empty()) {
+    replay_file = args[0];
+  }
+
+  if (replay_file.empty()) {
+    cerr << "No replay file specified." << std::endl;
+    return 1;
+  }
+
+  unsigned int nthreads = boost::thread::hardware_concurrency();
+  Replayer replayer(2 * nthreads + 1);
+  replayer.set_latency_multiplier(latency_multiplier);
+  replayer.set_pool_name(pool_name);
+  replayer.set_readonly(readonly);
+  replayer.set_image_name_map(image_name_map);
+  replayer.set_dump_perf_counters(dump_perf_counters);
+  replayer.run(replay_file);
+}