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Add a test for using compaction filters via the C API

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This commit is contained in:
Evan Shaw 2014-06-19 15:45:26 +12:00
parent d72313a7fa
commit 5363eb8ad4
1 changed files with 53 additions and 0 deletions
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53
db/c_test.c
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@ -154,6 +154,28 @@ static unsigned char FilterKeyMatch(
return fake_filter_result;
}
// Custom compaction filter
static void CFilterDestroy(void* arg) {}
static const char* CFilterName(void* arg) { return "foo"; }
static unsigned char CFilterFilter(void* arg, int level, const char* key,
size_t key_length,
const char* existing_value,
size_t value_length, char** new_value,
size_t* new_value_length,
unsigned char* value_changed) {
if (key_length == 3) {
if (memcmp(key, "bar", key_length) == 0) {
return 1;
} else if (memcmp(key, "baz", key_length) == 0) {
*value_changed = 1;
*new_value = "newbazvalue";
*new_value_length = 11;
return 0;
}
}
return 0;
}
// Custom merge operator
static void MergeOperatorDestroy(void* arg) { }
static const char* MergeOperatorName(void* arg) {
@ -407,6 +429,37 @@ int main(int argc, char** argv) {
rocksdb_filterpolicy_destroy(policy);
}
StartPhase("compaction_filter");
{
rocksdb_compactionfilter_t* cfilter;
cfilter = rocksdb_compactionfilter_create(NULL, CFilterDestroy,
CFilterFilter, CFilterName);
// Create new database
rocksdb_close(db);
rocksdb_destroy_db(options, dbname, &err);
rocksdb_options_set_compaction_filter(options, cfilter);
db = rocksdb_open(options, dbname, &err);
CheckNoError(err);
rocksdb_put(db, woptions, "foo", 3, "foovalue", 8, &err);
CheckNoError(err);
CheckGet(db, roptions, "foo", "foovalue");
rocksdb_put(db, woptions, "bar", 3, "barvalue", 8, &err);
CheckNoError(err);
CheckGet(db, roptions, "bar", "barvalue");
rocksdb_put(db, woptions, "baz", 3, "bazvalue", 8, &err);
CheckNoError(err);
CheckGet(db, roptions, "baz", "bazvalue");
// Force compaction
rocksdb_compact_range(db, NULL, 0, NULL, 0);
// should have filtered bar, but not foo
CheckGet(db, roptions, "foo", "foovalue");
CheckGet(db, roptions, "bar", NULL);
CheckGet(db, roptions, "baz", "newbazvalue");
rocksdb_compactionfilter_destroy(cfilter);
}
StartPhase("merge_operator");
{
rocksdb_mergeoperator_t* merge_operator;