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refactored datastore/journalstore for readability

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This commit is contained in:
John Jones 2017-09-07 14:58:02 -05:00
parent cb1ea3ceff
commit 78904ff1b6
6 changed files with 132 additions and 11 deletions
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1
repo/fsrepo/fs_repo.c
View file

@ -502,6 +502,7 @@ int fs_repo_open_config(struct FSRepo* repo) {
continue;
// make multiaddress a peer
struct Libp2pPeer* peer = libp2p_peer_new_from_multiaddress(cur);
multiaddress_free(cur);
struct ReplicationPeer* rp = repo_config_replication_peer_new();
rp->peer = peer;
libp2p_logger_debug("fs_repo", "Adding %s to replication_peers.\n", libp2p_peer_id_to_string(rp->peer));

3
repo/fsrepo/lmdb_cursor.c
View file

@ -25,9 +25,6 @@ struct lmdb_trans_cursor* lmdb_trans_cursor_new() {
*/
int lmdb_trans_cursor_free(struct lmdb_trans_cursor* in) {
if (in != NULL) {
if (in->database != NULL) {
free(in->database);
}
free(in);
}
return 1;

34
repo/fsrepo/lmdb_datastore.c
View file

@ -158,12 +158,28 @@ int repo_fsrepo_lmdb_get(const unsigned char* key, size_t key_size, struct Datas
* @param mdb_txn the transaction to be created
* @returns true(1) on success, false(0) otherwise
*/
int lmdb_datastore_create_transaction(MDB_env *mdb_env, MDB_dbi *mdb_dbi, MDB_txn **mdb_txn) {
int lmdb_datastore_create_transaction(MDB_env *mdb_env, MDB_txn **mdb_txn) {
// open transaction
if (mdb_txn_begin(mdb_env, NULL, 0, mdb_txn) != 0)
return 0;
if (mdb_dbi_open(*mdb_txn, "DATASTORE", MDB_DUPSORT | MDB_CREATE, mdb_dbi) != 0) {
mdb_txn_commit(*mdb_txn);
return 1;
}
int lmdb_datastore_open_databases(MDB_env *mdb_env, MDB_txn *mdb_txn, MDB_dbi *datastore_table, MDB_dbi* journalstore_table) {
if (mdb_env == NULL) {
libp2p_logger_error("lmdb_datastore", "open_databases: environment not set.\n");
return 0;
}
if (mdb_txn == NULL) {
libp2p_logger_error("lmdb_datastore", "open_database: transaction does not exist.\n");
return 0;
}
if (mdb_dbi_open(mdb_txn, "DATASTORE", MDB_DUPSORT | MDB_CREATE, datastore_table) != 0) {
libp2p_logger_error("lmdb_datastore", "open_database: Unable to open datastore.\n");
return 0;
}
if (mdb_dbi_open(mdb_txn, "JOURNALSTORE", MDB_DUPSORT | MDB_CREATE, journalstore_table) != 0) {
libp2p_logger_error("lmdb_datastore", "open_database: Unable to open journalstore.\n");
return 0;
}
return 1;
@ -182,6 +198,7 @@ int repo_fsrepo_lmdb_put(unsigned const char* key, size_t key_size, unsigned cha
int retVal;
MDB_txn *datastore_txn;
MDB_dbi datastore_table;
MDB_dbi journalstore_table;
struct MDB_val datastore_key;
struct MDB_val datastore_value;
struct DatastoreRecord *datastore_record = NULL;
@ -195,7 +212,13 @@ int repo_fsrepo_lmdb_put(unsigned const char* key, size_t key_size, unsigned cha
}
// open a transaction to the databases
if (!lmdb_datastore_create_transaction(mdb_env, &datastore_table, &datastore_txn)) {
if (!lmdb_datastore_create_transaction(mdb_env, &datastore_txn)) {
libp2p_logger_error("lmdb_datastore", "put: Unable to create db transaction.\n");
return 0;
}
if (!lmdb_datastore_open_databases(mdb_env, datastore_txn, &datastore_table, &journalstore_table)) {
libp2p_logger_error("lmdb_datastore", "put: Unable to open database tables.\n");
return 0;
}
@ -207,6 +230,7 @@ int repo_fsrepo_lmdb_put(unsigned const char* key, size_t key_size, unsigned cha
}
journalstore_cursor->environment = mdb_env;
journalstore_cursor->parent_transaction = datastore_txn;
journalstore_cursor->database = &journalstore_table;
// see if what we want is already in the datastore
repo_fsrepo_lmdb_get_with_transaction(key, key_size, &datastore_record, datastore_txn, &datastore_table);
@ -283,7 +307,7 @@ int repo_fsrepo_lmdb_put(unsigned const char* key, size_t key_size, unsigned cha
if (!lmdb_journalstore_journal_add(journalstore_cursor, journalstore_record)) {
libp2p_logger_error("lmdb_datastore", "Datastore record was added, but problem adding Journalstore record. Continuing.\n");
}
lmdb_journalstore_cursor_close(journalstore_cursor);
//lmdb_journalstore_cursor_close(journalstore_cursor);
lmdb_journal_record_free(journalstore_record);
retVal = 1;
}

18
repo/fsrepo/lmdb_journalstore.c
View file

@ -118,6 +118,7 @@ int lmdb_journalstore_journal_add(struct lmdb_trans_cursor *journalstore_cursor,
MDB_val journalstore_key;
MDB_val journalstore_value;
int createdTransaction = 0;
if (!lmdb_journalstore_build_key_value_pair(journalstore_record, &journalstore_key, &journalstore_value)) {
libp2p_logger_error("lmdbd_journalstore", "add: Unable to convert journalstore record to key/value.\n");
@ -127,6 +128,7 @@ int lmdb_journalstore_journal_add(struct lmdb_trans_cursor *journalstore_cursor,
// create transaction if necessary
if (journalstore_cursor->transaction == NULL) {
mdb_txn_begin(journalstore_cursor->environment, journalstore_cursor->parent_transaction, 0, &journalstore_cursor->transaction);
createdTransaction = 1;
}
if (journalstore_cursor->database == NULL) {
@ -138,11 +140,21 @@ int lmdb_journalstore_journal_add(struct lmdb_trans_cursor *journalstore_cursor,
}
}
// for debuggin
MDB_txn *tx = journalstore_cursor->transaction;
MDB_dbi dbi = *journalstore_cursor->database;
if (mdb_put(journalstore_cursor->transaction, *journalstore_cursor->database, &journalstore_key, &journalstore_value, 0) != 0) {
libp2p_logger_error("lmdb_journalstore", "Unable to add to JOURNALSTORE database.\n");
return 0;
}
if (createdTransaction) {
if (mdb_txn_commit(journalstore_cursor->transaction) != 0) {
libp2p_logger_error("lmdb_journalstore", "Unable to commit JOURNALSTORE transaction.\n");
return 0;
}
}
return 1;
}
@ -164,7 +176,7 @@ int lmdb_journalstore_get_record(void* handle, struct lmdb_trans_cursor *journal
// create a new transaction if necessary
if (journalstore_cursor->transaction == NULL) {
if (mdb_txn_begin(mdb_env, NULL, 0, &journalstore_cursor->transaction) != 0) {
if (mdb_txn_begin(mdb_env, journalstore_cursor->parent_transaction, 0, &journalstore_cursor->transaction) != 0) {
libp2p_logger_error("lmdb_journanstore", "get_record: Attempt to begin transaction failed.\n");
return 0;
}
@ -373,12 +385,12 @@ int lmdb_journalstore_cursor_close(struct lmdb_trans_cursor *cursor) {
if (cursor != NULL) {
if (cursor->cursor != NULL) {
mdb_cursor_close(cursor->cursor);
cursor->cursor = NULL;
}
if (cursor->transaction != NULL) {
mdb_txn_commit(cursor->transaction);
cursor->transaction = NULL;
}
cursor->cursor = NULL;
cursor->transaction = NULL;
}
return 1;
}

85
test/journal/test_journal.h
View file

@ -120,6 +120,7 @@ int test_journal_server_1() {
ipfs_node_offline_new(ipfs_path, &local_node);
ipfs_import_file(NULL, filename, &node, local_node, &bytes_written, 0);
ipfs_node_free(local_node);
ipfs_hashtable_node_free(node);
libp2p_logger_debug("test_journal", "*** Firing up daemon for server 1 ***\n");
@ -191,3 +192,87 @@ int test_journal_server_2() {
pthread_join(daemon_thread, NULL);
return retVal;
}
#include "lmdb.h"
// test the lightning db process
int test_journal_db() {
MDB_env *mdb_env = NULL;
MDB_txn *mdb_txn = NULL;
MDB_dbi datastore_db;
MDB_dbi journalstore_db;
MDB_val datastore_key;
MDB_val datastore_value;
MDB_val *journalstore_key;
MDB_val *journalstore_value;
MDB_val returned_value;
// set up records
char* key = "ABC123";
char* value = "Hello, world!";
datastore_key.mv_size = strlen(key);
datastore_key.mv_data = (void*)key;
datastore_value.mv_size = strlen(value);
datastore_value.mv_data = (void*)value;
journalstore_key = (MDB_val*) malloc(sizeof(MDB_val));
journalstore_key->mv_size = strlen(key);
journalstore_key->mv_data = (void*)key;
journalstore_value = (MDB_val*) malloc(sizeof(MDB_val));
journalstore_value->mv_size = strlen(value);
journalstore_value->mv_data = (void*)value;
// clean up the old stuff
unlink ("/tmp/lock.mdb");
unlink ("/tmp/data.mdb");
// create environment
if (mdb_env_create(&mdb_env) != 0)
return 0;
if (mdb_env_set_maxdbs(mdb_env, (MDB_dbi)2) != 0)
return 0;
if (mdb_env_open(mdb_env, "/tmp", 0, S_IRWXU) != 0) {
fprintf(stderr, "Unable to open environment.\n");
return 0;
}
// create a transaction
if (mdb_txn_begin(mdb_env, NULL, 0, &mdb_txn) != 0) {
fprintf(stderr, "Unable to open transaction.\n");
return 0;
}
// open databases
if (mdb_dbi_open(mdb_txn, "DATASTORE", MDB_DUPSORT | MDB_CREATE, &datastore_db) != 0)
return 0;
if (mdb_dbi_open(mdb_txn, "JOURNALSTORE", MDB_DUPSORT | MDB_CREATE, &journalstore_db) != 0)
return 0;
// search for a record in the datastore
if (mdb_get(mdb_txn, datastore_db, &datastore_key, &returned_value) != MDB_NOTFOUND) {
return 0;
}
// add record to datastore
if (mdb_put(mdb_txn, datastore_db, &datastore_key, &datastore_value, 0) != 0)
return 0;
// add record to journalstore
if (mdb_put(mdb_txn, journalstore_db, journalstore_key, journalstore_value, 0) != 0)
return 0;
// get rid of MDB_val values from journalstore to see if commit still works
free(journalstore_key);
free(journalstore_value);
journalstore_key = NULL;
journalstore_value = NULL;
// close everything up
if (mdb_txn_commit(mdb_txn) != 0)
return 0;
mdb_env_close(mdb_env);
return 1;
}

2
test/testit.c
View file

@ -47,6 +47,7 @@ const char* names[] = {
"test_cid_protobuf_encode_decode",
"test_daemon_startup_shutdown",
"test_datastore_list_journal",
"test_journal_db",
"test_journal_encode_decode",
"test_journal_server_1",
"test_journal_server_2",
@ -107,6 +108,7 @@ int (*funcs[])(void) = {
test_cid_protobuf_encode_decode,
test_daemon_startup_shutdown,
test_datastore_list_journal,
test_journal_db,
test_journal_encode_decode,
test_journal_server_1,
test_journal_server_2,