tools: Make FilterPolicy settable via URI/CreateFromString (#71)

db_stress_tool/db_stress_common.h

@@ -156,6 +156,7 @@ DECLARE_bool(allow_concurrent_memtable_write);
 DECLARE_double(experimental_mempurge_threshold);
 DECLARE_bool(enable_write_thread_adaptive_yield);
 DECLARE_int32(reopen);
+DECLARE_string(filter_uri);
 DECLARE_double(bloom_bits);
 DECLARE_int32(ribbon_starting_level);
 DECLARE_bool(partition_filters);

db_stress_tool/db_stress_gflags.cc

@@ -521,6 +521,7 @@ DEFINE_int32(reopen, 10, "Number of times database reopens");
 static const bool FLAGS_reopen_dummy __attribute__((__unused__)) =
     RegisterFlagValidator(&FLAGS_reopen, &ValidateInt32Positive);
 
+DEFINE_string(filter_uri, "", "Filter Policy URI");
 DEFINE_double(bloom_bits, 10,
               "Bloom filter bits per key. "
               "Negative means use default settings.");

db_stress_tool/db_stress_test_base.cc

@@ -35,20 +35,39 @@ namespace ROCKSDB_NAMESPACE {
 namespace {
 
 std::shared_ptr<const FilterPolicy> CreateFilterPolicy() {
-  if (FLAGS_bloom_bits < 0) {
+  if (!FLAGS_filter_uri.empty()) {
+    ConfigOptions config_options;
+    std::shared_ptr<const FilterPolicy> policy;
+    config_options.ignore_unsupported_options = false;
+    std::string bits_str;
+    if (FLAGS_bloom_bits > 0) {
+      bits_str = ":" + FormatDoubleParam(FLAGS_bloom_bits);
+      fprintf(stderr, "note: appending --bloom-bits (%f) to --filter-uri\n",
+              FLAGS_bloom_bits);
+    }
+    Status s = FilterPolicy::CreateFromString(
+        config_options, FLAGS_filter_uri + bits_str, &policy);
+    if (!s.ok() || !policy) {
+      fprintf(stderr, "Cannot create filter policy(%s%s): %s\n",
+              FLAGS_filter_uri.c_str(), bits_str.c_str(), s.ToString().c_str());
+      exit(1);
+    }
+    return policy;
+  } else if (FLAGS_bloom_bits < 0) {
     return BlockBasedTableOptions().filter_policy;
-  }
-  const FilterPolicy* new_policy;
-  if (FLAGS_ribbon_starting_level >= 999) {
-    // Use Bloom API
-    new_policy = NewBloomFilterPolicy(FLAGS_bloom_bits, false);
   } else {
-    new_policy = NewRibbonFilterPolicy(
-        FLAGS_bloom_bits, /* bloom_before_level */ FLAGS_ribbon_starting_level);
+    const FilterPolicy* new_policy;
+    if (FLAGS_ribbon_starting_level >= 999) {
+      // Use Bloom API
+      new_policy = NewBloomFilterPolicy(FLAGS_bloom_bits, false);
+    } else {
+      new_policy = NewRibbonFilterPolicy(
+          FLAGS_bloom_bits,
+          /* bloom_before_level */ FLAGS_ribbon_starting_level);
+    }
+    return std::shared_ptr<const FilterPolicy>(new_policy);
   }
-  return std::shared_ptr<const FilterPolicy>(new_policy);
 }
-
 }  // namespace
 
 StressTest::StressTest()
@@ -2397,6 +2416,10 @@ void StressTest::PrintEnv() const {
           FLAGS_file_checksum_impl.c_str());
   fprintf(stdout, "Bloom bits / key          : %s\n",
           FormatDoubleParam(FLAGS_bloom_bits).c_str());
+  if (!FLAGS_filter_uri.empty()) {
+    fprintf(stdout, "Filter Policy             : %s\n",
+            FLAGS_filter_uri.c_str());
+  }
   fprintf(stdout, "Max subcompactions        : %" PRIu64 "\n",
           FLAGS_subcompactions);
   fprintf(stdout, "Use MultiGet              : %s\n",

tools/db_bench_tool.cc

@@ -739,9 +739,9 @@ DEFINE_int32(random_access_max_buffer_size, 1024 * 1024,
 DEFINE_int32(writable_file_max_buffer_size, 1024 * 1024,
              "Maximum write buffer for Writable File");
 
-DEFINE_int32(bloom_bits, -1,
-             "Bloom filter bits per key. Negative means use default."
-             "Zero disables.");
+DEFINE_double(bloom_bits, -1,
+              "Bloom filter bits per key. Negative means use default."
+              "Zero disables.");
 
 DEFINE_bool(use_ribbon_filter, false, "Use Ribbon instead of Bloom filter");
 
@@ -1341,6 +1341,8 @@ static bool ValidateTableCacheNumshardbits(const char* flagname,
 }
 DEFINE_int32(table_cache_numshardbits, 4, "");
 
+DEFINE_string(filter_uri, "", "URI for registry FilterPolicy");
+
 DEFINE_string(env_uri, "",
               "URI for registry Env lookup. Mutually exclusive with --fs_uri");
 DEFINE_string(fs_uri, "",
@@ -4629,7 +4631,25 @@ class Benchmark {
         // block cache, even with OPTIONS file provided.
         table_options->block_cache = cache_;
       }
-      if (table_options->filter_policy == nullptr) {
+      if (!FLAGS_filter_uri.empty()) {
+        std::string bits_str;
+        if (FLAGS_bloom_bits > 0) {
+          bits_str = ":" + std::to_string(FLAGS_bloom_bits);
+          fprintf(stderr, "note: appending --bloom-bits (%f) to --filter-uri\n",
+                  FLAGS_bloom_bits);
+        }
+        ConfigOptions config_options;
+        config_options.ignore_unsupported_options = false;
+        Status s = FilterPolicy::CreateFromString(
+            config_options, FLAGS_filter_uri + bits_str,
+            &table_options->filter_policy);
+        if (!s.ok()) {
+          fprintf(stderr, "failure creating filter policy[%s%s]: %s\n",
+                  FLAGS_filter_uri.c_str(), bits_str.c_str(),
+                  s.ToString().c_str());
+          exit(1);
+        }
+      } else if (table_options->filter_policy == nullptr) {
         if (FLAGS_bloom_bits < 0) {
           table_options->filter_policy = BlockBasedTableOptions().filter_policy;
         } else if (FLAGS_bloom_bits == 0) {

util/filter_bench.cc

@@ -14,12 +14,14 @@ int main() {
 #include <cinttypes>
 #include <iostream>
 #include <sstream>
+#include <utility>
 #include <vector>
 
 #include "memory/arena.h"
 #include "port/port.h"
 #include "port/stack_trace.h"
 #include "rocksdb/cache.h"
+#include "rocksdb/convenience.h"
 #include "rocksdb/env.h"
 #include "rocksdb/system_clock.h"
 #include "rocksdb/table.h"
@@ -83,10 +85,10 @@ DEFINE_bool(use_plain_table_bloom, false,
 DEFINE_bool(new_builder, false,
             "Whether to create a new builder for each new filter");
 
-DEFINE_uint32(impl, 0,
+DEFINE_string(impl, "0",
               "Select filter implementation. Without -use_plain_table_bloom:"
-              "0 = legacy full Bloom filter, "
-              "1 = format_version 5 Bloom filter, 2 = Ribbon128 filter. With "
+              "1 = format_version 5 Bloom filter, 2 = Ribbon128 filter. "
+              "name and options of the filter to use.  With "
               "-use_plain_table_bloom: 0 = no locality, 1 = locality.");
 
 DEFINE_bool(net_includes_hashing, false,
@@ -139,36 +141,7 @@ void _always_assert_fail(int line, const char *file, const char *expr) {
 // accurate speed tests
 #define PREDICT_FP_RATE
 #endif
-
-using ROCKSDB_NAMESPACE::Arena;
-using ROCKSDB_NAMESPACE::BlockContents;
-using ROCKSDB_NAMESPACE::BloomFilterPolicy;
-using ROCKSDB_NAMESPACE::BloomHash;
-using ROCKSDB_NAMESPACE::BloomLikeFilterPolicy;
-using ROCKSDB_NAMESPACE::BuiltinFilterBitsBuilder;
-using ROCKSDB_NAMESPACE::CachableEntry;
-using ROCKSDB_NAMESPACE::Cache;
-using ROCKSDB_NAMESPACE::CacheEntryRole;
-using ROCKSDB_NAMESPACE::CacheEntryRoleOptions;
-using ROCKSDB_NAMESPACE::EncodeFixed32;
-using ROCKSDB_NAMESPACE::Env;
-using ROCKSDB_NAMESPACE::FastRange32;
-using ROCKSDB_NAMESPACE::FilterBitsReader;
-using ROCKSDB_NAMESPACE::FilterBuildingContext;
-using ROCKSDB_NAMESPACE::FilterPolicy;
-using ROCKSDB_NAMESPACE::FullFilterBlockReader;
-using ROCKSDB_NAMESPACE::GetSliceHash;
-using ROCKSDB_NAMESPACE::GetSliceHash64;
-using ROCKSDB_NAMESPACE::Lower32of64;
-using ROCKSDB_NAMESPACE::LRUCacheOptions;
-using ROCKSDB_NAMESPACE::ParsedFullFilterBlock;
-using ROCKSDB_NAMESPACE::PlainTableBloomV1;
-using ROCKSDB_NAMESPACE::Random32;
-using ROCKSDB_NAMESPACE::Slice;
-using ROCKSDB_NAMESPACE::static_cast_with_check;
-using ROCKSDB_NAMESPACE::Status;
-using ROCKSDB_NAMESPACE::StderrLogger;
-using ROCKSDB_NAMESPACE::mock::MockBlockBasedTableTester;
+namespace ROCKSDB_NAMESPACE {
 
 struct KeyMaker {
   KeyMaker(size_t avg_size)
@@ -209,17 +182,6 @@ struct KeyMaker {
   }
 };
 
-void PrintWarnings() {
-#if defined(__GNUC__) && !defined(__OPTIMIZE__)
-  fprintf(stdout,
-          "WARNING: Optimization is disabled: benchmarks unnecessarily slow\n");
-#endif
-#ifndef NDEBUG
-  fprintf(stdout,
-          "WARNING: Assertions are enabled; benchmarks unnecessarily slow\n");
-#endif
-}
-
 void PrintError(const char *error) { fprintf(stderr, "ERROR: %s\n", error); }
 
 struct FilterInfo {
@@ -296,29 +258,22 @@ static uint32_t DryRunHash64(Slice &s) {
   return Lower32of64(GetSliceHash64(s));
 }
 
-const std::shared_ptr<const FilterPolicy> &GetPolicy() {
-  static std::shared_ptr<const FilterPolicy> policy;
-  if (!policy) {
-    policy = BloomLikeFilterPolicy::Create(
-        BloomLikeFilterPolicy::GetAllFixedImpls().at(FLAGS_impl),
-        FLAGS_bits_per_key);
-  }
-  return policy;
-}
-
-struct FilterBench : public MockBlockBasedTableTester {
+struct FilterBench : public mock::MockBlockBasedTableTester {
   std::vector<KeyMaker> kms_;
   std::vector<FilterInfo> infos_;
   Random32 random_;
   std::ostringstream fp_rate_report_;
   Arena arena_;
   double m_queries_;
   StderrLogger stderr_logger_;
+  int filter_index_;
 
-  FilterBench()
-      : MockBlockBasedTableTester(GetPolicy()),
+  FilterBench(const std::shared_ptr<const FilterPolicy> &filter_policy,
+              int filter_index)
+      : MockBlockBasedTableTester(filter_policy),
         random_(FLAGS_seed),
-        m_queries_(0) {
+        m_queries_(0),
+        filter_index_(filter_index) {
     for (uint32_t i = 0; i < FLAGS_batch_size; ++i) {
       kms_.emplace_back(FLAGS_key_size < 8 ? 8 : FLAGS_key_size);
     }
@@ -354,17 +309,6 @@ void FilterBench::Go() {
     throw std::runtime_error(
         "Can't combine -use_plain_table_bloom and -use_full_block_reader");
   }
-  if (FLAGS_use_plain_table_bloom) {
-    if (FLAGS_impl > 1) {
-      throw std::runtime_error(
-          "-impl must currently be >= 0 and <= 1 for Plain table");
-    }
-  } else {
-    if (FLAGS_impl > 2) {
-      throw std::runtime_error(
-          "-impl must currently be >= 0 and <= 2 for Block-based table");
-    }
-  }
 
   if (FLAGS_vary_key_count_ratio < 0.0 || FLAGS_vary_key_count_ratio > 1.0) {
     throw std::runtime_error("-vary_key_count_ratio must be >= 0.0 and <= 1.0");
@@ -395,7 +339,7 @@ void FilterBench::Go() {
 
   std::unique_ptr<BuiltinFilterBitsBuilder> builder;
 
-  size_t total_memory_used = 0;
+  [[maybe_unused]] size_t total_memory_used = 0;
   size_t total_size = 0;
   size_t total_keys_added = 0;
 #ifdef PREDICT_FP_RATE
@@ -432,7 +376,7 @@ void FilterBench::Go() {
       info.plain_table_bloom_.reset(new PlainTableBloomV1());
       info.plain_table_bloom_->SetTotalBits(
           &arena_, static_cast<uint32_t>(keys_to_add * FLAGS_bits_per_key),
-          FLAGS_impl, 0 /*huge_page*/, nullptr /*logger*/);
+          filter_index_, 0 /*huge_page*/, nullptr /*logger*/);
       for (uint32_t i = 0; i < keys_to_add; ++i) {
         uint32_t hash = GetSliceHash(kms_[0].Get(filter_id, i));
         info.plain_table_bloom_->AddHash(hash);
@@ -601,7 +545,8 @@ double FilterBench::RandomQueryTest(uint32_t inside_threshold, bool dry_run,
 
   auto dry_run_hash_fn = DryRunNoHash;
   if (!FLAGS_net_includes_hashing) {
-    if (FLAGS_impl == 0 || FLAGS_use_plain_table_bloom) {
+    if ((filter_index_ >= 0 && filter_index_ < 2) ||
+        FLAGS_use_plain_table_bloom) {
       dry_run_hash_fn = DryRunHash32;
     } else {
       dry_run_hash_fn = DryRunHash64;
@@ -790,6 +735,19 @@ double FilterBench::RandomQueryTest(uint32_t inside_threshold, bool dry_run,
   return ns;
 }
 
+}  // namespace ROCKSDB_NAMESPACE
+
+void PrintWarnings() {
+#if defined(__GNUC__) && !defined(__OPTIMIZE__)
+  fprintf(stdout,
+          "WARNING: Optimization is disabled: benchmarks unnecessarily slow\n");
+#endif
+#ifndef NDEBUG
+  fprintf(stdout,
+          "WARNING: Assertions are enabled; benchmarks unnecessarily slow\n");
+#endif
+}
+
 int main(int argc, char **argv) {
   ROCKSDB_NAMESPACE::port::InstallStackTraceHandler();
   SetUsageMessage(std::string("\nUSAGE:\n") + std::string(argv[0]) +
@@ -825,13 +783,61 @@ int main(int argc, char **argv) {
         << "  \"Skewed X% in Y%\" - like \"Random filter\" except Y% of"
         << "\n      the filters are designated as \"hot\" and receive X%"
         << "\n      of queries." << std::endl;
+  } else if (FLAGS_use_plain_table_bloom && FLAGS_use_full_block_reader) {
+    throw std::runtime_error(
+        "Can't combine -use_plain_table_bloom and -use_full_block_reader");
+  } else if (FLAGS_vary_key_count_ratio < 0.0 ||
+             FLAGS_vary_key_count_ratio > 1.0) {
+    throw std::runtime_error("-vary_key_count_ratio must be >= 0.0 and <= 1.0");
+  }
+  std::shared_ptr<const ROCKSDB_NAMESPACE::FilterPolicy> policy;
+
+  int bloom_idx = -1;
+  uint64_t id;
+  const auto &bloom_like_filters =
+      ROCKSDB_NAMESPACE::BloomLikeFilterPolicy::GetAllFixedImpls();
+  ROCKSDB_NAMESPACE::Slice impl(FLAGS_impl);
+  if (ROCKSDB_NAMESPACE::ConsumeDecimalNumber(&impl, &id) &&
+      id < bloom_like_filters.size() && impl.empty()) {
+    policy = ROCKSDB_NAMESPACE::BloomLikeFilterPolicy::Create(
+        bloom_like_filters.at(id), FLAGS_bits_per_key);
+    if (!policy) {
+      fprintf(stderr, "Failed to create BloomLikeFilterPolicy: %s\n",
+              FLAGS_impl.c_str());
+      exit(-1);
+    } else {
+      bloom_idx = static_cast<int>(id);
+    }
   } else {
-    FilterBench b;
-    for (uint32_t i = 0; i < FLAGS_runs; ++i) {
-      b.Go();
-      FLAGS_seed += 100;
-      b.random_.Seed(FLAGS_seed);
+    ROCKSDB_NAMESPACE::ConfigOptions config_options;
+    config_options.ignore_unsupported_options = false;
+    std::string bits_str;
+    if (FLAGS_bits_per_key > 0) {
+      bits_str = ":" + std::to_string(FLAGS_bits_per_key);
     }
+    auto s = ROCKSDB_NAMESPACE::FilterPolicy::CreateFromString(
+        config_options, FLAGS_impl + bits_str, &policy);
+    if (!s.ok() || !policy) {
+      fprintf(stderr, "Failed to create FilterPolicy[%s%s]: %s\n",
+              FLAGS_impl.c_str(), bits_str.c_str(), s.ToString().c_str());
+      exit(-1);
+    }
+  }
+  if (FLAGS_use_plain_table_bloom) {
+    if (bloom_idx < 0 || bloom_idx > 1) {
+      fprintf(stderr, "-impl must currently be 0 or 1 for Plain table");
+      exit(-1);
+    }
+  } else if (bloom_idx == 1) {
+    fprintf(stderr,
+            "Block-based filter not currently supported by filter_bench");
+    exit(-1);
+  }
+  ROCKSDB_NAMESPACE::FilterBench b(policy, bloom_idx);
+  for (uint32_t i = 0; i < FLAGS_runs; ++i) {
+    b.Go();
+    FLAGS_seed += 100;
+    b.random_.Seed(FLAGS_seed);
   }
 
   return 0;