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[324] various fixes for SQLite3 schema

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- STRING => TEXT
- make sure the right side of LIKE is a placeholder for a string, not an
  expression (otherwise it doesn't use indices)
- introduce the "records_bytype_and_rname" index.  it's necessary to optimize
  the FIND_PREVIOUS query.
This commit is contained in:
JINMEI Tatuya
2012-03-05 00:22:55 -08:00
parent 2730ac6f20
commit b587cb1fb6
4 changed files with 75 additions and 54 deletions
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6
compatcheck/sqlite3-difftbl-check.py.in
View File

@@ -47,9 +47,9 @@ except sqlite3.OperationalError as ex:
'zone_id INTEGER NOT NULL, ' +
'version INTEGER NOT NULL, ' +
'operation INTEGER NOT NULL, ' +
'name STRING NOT NULL COLLATE NOCASE, ' +
'rrtype STRING NOT NULL COLLATE NOCASE, ' +
'ttl INTEGER NOT NULL, rdata STRING NOT NULL)')
'name TEXT NOT NULL COLLATE NOCASE, ' +
'rrtype TEXT NOT NULL COLLATE NOCASE, ' +
'ttl INTEGER NOT NULL, rdata TEXT NOT NULL)')
else:
sys.stdout.write('Found an older version of SQLite3 DB file: ' +
db_file + '\n' + "Perform '" + os.getcwd() +

33
src/lib/datasrc/sqlite3_accessor.cc
View File

@@ -245,31 +245,38 @@ const char* const SCHEMA_LIST[] = {
"CREATE TABLE schema_version (version INTEGER NOT NULL)",
"INSERT INTO schema_version VALUES (1)",
"CREATE TABLE zones (id INTEGER PRIMARY KEY, "
"name STRING NOT NULL COLLATE NOCASE, "
"rdclass STRING NOT NULL COLLATE NOCASE DEFAULT 'IN', "
"name TEXT NOT NULL COLLATE NOCASE, "
"rdclass TEXT NOT NULL COLLATE NOCASE DEFAULT 'IN', "
"dnssec BOOLEAN NOT NULL DEFAULT 0)",
"CREATE INDEX zones_byname ON zones (name)",
"CREATE TABLE records (id INTEGER PRIMARY KEY, "
"zone_id INTEGER NOT NULL, name STRING NOT NULL COLLATE NOCASE, "
"rname STRING NOT NULL COLLATE NOCASE, ttl INTEGER NOT NULL, "
"rdtype STRING NOT NULL COLLATE NOCASE, sigtype STRING COLLATE NOCASE, "
"rdata STRING NOT NULL)",
"zone_id INTEGER NOT NULL, name TEXT NOT NULL COLLATE NOCASE, "
"rname TEXT NOT NULL COLLATE NOCASE, ttl INTEGER NOT NULL, "
"rdtype TEXT NOT NULL COLLATE NOCASE, sigtype TEXT COLLATE NOCASE, "
"rdata TEXT NOT NULL)",
"CREATE INDEX records_byname ON records (name)",
"CREATE INDEX records_byrname ON records (rname)",
// The next index is a tricky one. It's necessary for
// FIND_PREVIOUS to use the index efficiently; since there's an
// "inequality", the rname column must be placed later. records_byrname
// may not be sufficient especially when the zone is not signed (and
// defining a separate index for rdtype only doesn't work either; SQLite3
// would then create a temporary B-tree for "ORDER BY").
"CREATE INDEX records_bytype_and_rname ON records (rdtype, rname)",
"CREATE TABLE nsec3 (id INTEGER PRIMARY KEY, zone_id INTEGER NOT NULL, "
"hash STRING NOT NULL COLLATE NOCASE, "
"owner STRING NOT NULL COLLATE NOCASE, "
"ttl INTEGER NOT NULL, rdtype STRING NOT NULL COLLATE NOCASE, "
"rdata STRING NOT NULL)",
"hash TEXT NOT NULL COLLATE NOCASE, "
"owner TEXT NOT NULL COLLATE NOCASE, "
"ttl INTEGER NOT NULL, rdtype TEXT NOT NULL COLLATE NOCASE, "
"rdata TEXT NOT NULL)",
"CREATE INDEX nsec3_byhash ON nsec3 (hash)",
"CREATE TABLE diffs (id INTEGER PRIMARY KEY, "
"zone_id INTEGER NOT NULL, "
"version INTEGER NOT NULL, "
"operation INTEGER NOT NULL, "
"name STRING NOT NULL COLLATE NOCASE, "
"rrtype STRING NOT NULL COLLATE NOCASE, "
"name TEXT NOT NULL COLLATE NOCASE, "
"rrtype TEXT NOT NULL COLLATE NOCASE, "
"ttl INTEGER NOT NULL, "
"rdata STRING NOT NULL)",
"rdata TEXT NOT NULL)",
NULL
};

46
src/lib/datasrc/sqlite3_datasrc.cc
View File

@@ -26,7 +26,7 @@
#include <dns/rrset.h>
#include <dns/rrsetlist.h>
#define SQLITE_SCHEMA_VERSION 1
#define SQLITE_SCHEMA_VERSION 2
using namespace std;
using namespace isc::dns;
@@ -57,33 +57,34 @@ struct Sqlite3Parameters {
namespace {
const char* const SCHEMA_LIST[] = {
"CREATE TABLE schema_version (version INTEGER NOT NULL)",
"INSERT INTO schema_version VALUES (1)",
"INSERT INTO schema_version VALUES (2)",
"CREATE TABLE zones (id INTEGER PRIMARY KEY, "
"name STRING NOT NULL COLLATE NOCASE, "
"rdclass STRING NOT NULL COLLATE NOCASE DEFAULT 'IN', "
"name TEXT NOT NULL COLLATE NOCASE, "
"rdclass TEXT NOT NULL COLLATE NOCASE DEFAULT 'IN', "
"dnssec BOOLEAN NOT NULL DEFAULT 0)",
"CREATE INDEX zones_byname ON zones (name)",
"CREATE TABLE records (id INTEGER PRIMARY KEY, "
"zone_id INTEGER NOT NULL, name STRING NOT NULL COLLATE NOCASE, "
"rname STRING NOT NULL COLLATE NOCASE, ttl INTEGER NOT NULL, "
"rdtype STRING NOT NULL COLLATE NOCASE, sigtype STRING COLLATE NOCASE, "
"rdata STRING NOT NULL)",
"zone_id INTEGER NOT NULL, name TEXT NOT NULL COLLATE NOCASE, "
"rname TEXT NOT NULL COLLATE NOCASE, ttl INTEGER NOT NULL, "
"rdtype TEXT NOT NULL COLLATE NOCASE, sigtype TEXT COLLATE NOCASE, "
"rdata TEXT NOT NULL)",
"CREATE INDEX records_byname ON records (name)",
"CREATE INDEX records_byrname ON records (rname)",
"CREATE INDEX records_bytype_and_rname ON records (rdtype, rname)",
"CREATE TABLE nsec3 (id INTEGER PRIMARY KEY, zone_id INTEGER NOT NULL, "
"hash STRING NOT NULL COLLATE NOCASE, "
"owner STRING NOT NULL COLLATE NOCASE, "
"ttl INTEGER NOT NULL, rdtype STRING NOT NULL COLLATE NOCASE, "
"rdata STRING NOT NULL)",
"hash TEXT NOT NULL COLLATE NOCASE, "
"owner TEXT NOT NULL COLLATE NOCASE, "
"ttl INTEGER NOT NULL, rdtype TEXT NOT NULL COLLATE NOCASE, "
"rdata TEXT NOT NULL)",
"CREATE INDEX nsec3_byhash ON nsec3 (hash)",
"CREATE TABLE diffs (id INTEGER PRIMARY KEY, "
"zone_id INTEGER NOT NULL, "
"version INTEGER NOT NULL, "
"operation INTEGER NOT NULL, "
"name STRING NOT NULL COLLATE NOCASE, "
"rrtype STRING NOT NULL COLLATE NOCASE, "
"name TEXT NOT NULL COLLATE NOCASE, "
"rrtype TEXT NOT NULL COLLATE NOCASE, "
"ttl INTEGER NOT NULL, "
"rdata STRING NOT NULL)",
"rdata TEXT NOT NULL)",
NULL
};
@@ -109,12 +110,16 @@ const char* const q_referral_str = "SELECT rdtype, ttl, sigtype, rdata FROM "
const char* const q_any_str = "SELECT rdtype, ttl, sigtype, rdata "
"FROM records WHERE zone_id=?1 AND name=?2";
// Note: the wildcard symbol '%' is expected to be added to the text
// for the placeholder for LIKE given via sqlite3_bind_text(). We don't
// use the expression such as (?2 || '%') because it would disable the use
// of indices and could result in terrible performance.
const char* const q_count_str = "SELECT COUNT(*) FROM records "
"WHERE zone_id=?1 AND rname LIKE (?2 || '%');";
"WHERE zone_id=?1 AND rname LIKE ?2;";
const char* const q_previous_str = "SELECT name FROM records "
"WHERE zone_id=?1 AND rdtype = 'NSEC' AND "
"rname < $2 ORDER BY rname DESC LIMIT 1";
"WHERE rname < ?2 AND zone_id=?1 AND rdtype = 'NSEC' "
"ORDER BY rname DESC LIMIT 1";
const char* const q_nsec3_str = "SELECT rdtype, ttl, rdata FROM nsec3 "
"WHERE zone_id = ?1 AND hash = $2";
@@ -314,8 +319,9 @@ Sqlite3DataSrc::findRecords(const Name& name, const RRType& rdtype,
" to SQL statement (qcount)");
}
const string revname_text = name.reverse().toText();
rc = sqlite3_bind_text(dbparameters->q_count_, 2, revname_text.c_str(),
const string revname_text = name.reverse().toText() + "%";
rc = sqlite3_bind_text(dbparameters->q_count_, 2,
revname_text.c_str(),
-1, SQLITE_STATIC);
if (rc != SQLITE_OK) {
isc_throw(Sqlite3Error, "Could not bind name " << name.reverse() <<

44
src/lib/python/isc/datasrc/sqlite3_ds.py
View File

@@ -23,6 +23,9 @@ RR_NAME_INDEX = 2
RR_TTL_INDEX = 4
RR_RDATA_INDEX = 7
# Current version of schema (maybe we need a minor version, too)
SCHEMA_VERSION = 2
class Sqlite3DSError(Exception):
""" Define exceptions."""
pass
@@ -48,39 +51,43 @@ def create(cur):
row = cur.fetchone()
except sqlite3.OperationalError:
cur.execute("CREATE TABLE schema_version (version INTEGER NOT NULL)")
cur.execute("INSERT INTO schema_version VALUES (1)")
cur.execute("INSERT INTO schema_version VALUES (" +
str(SCHEMA_VERSION) + ")")
cur.execute("""CREATE TABLE zones (id INTEGER PRIMARY KEY,
name STRING NOT NULL COLLATE NOCASE,
rdclass STRING NOT NULL COLLATE NOCASE DEFAULT 'IN',
name TEXT NOT NULL COLLATE NOCASE,
rdclass TEXT NOT NULL COLLATE NOCASE DEFAULT 'IN',
dnssec BOOLEAN NOT NULL DEFAULT 0)""")
cur.execute("CREATE INDEX zones_byname ON zones (name)")
cur.execute("""CREATE TABLE records (id INTEGER PRIMARY KEY,
zone_id INTEGER NOT NULL,
name STRING NOT NULL COLLATE NOCASE,
rname STRING NOT NULL COLLATE NOCASE,
name TEXT NOT NULL COLLATE NOCASE,
rname TEXT NOT NULL COLLATE NOCASE,
ttl INTEGER NOT NULL,
rdtype STRING NOT NULL COLLATE NOCASE,
sigtype STRING COLLATE NOCASE,
rdata STRING NOT NULL)""")
rdtype TEXT NOT NULL COLLATE NOCASE,
sigtype TEXT COLLATE NOCASE,
rdata TEXT NOT NULL)""")
cur.execute("CREATE INDEX records_byname ON records (name)")
cur.execute("CREATE INDEX records_byrname ON records (rname)")
cur.execute("""CREATE INDEX records_bytype_and_rname ON records
(rdtype, rname)""")
cur.execute("""CREATE TABLE nsec3 (id INTEGER PRIMARY KEY,
zone_id INTEGER NOT NULL,
hash STRING NOT NULL COLLATE NOCASE,
owner STRING NOT NULL COLLATE NOCASE,
hash TEXT NOT NULL COLLATE NOCASE,
owner TEXT NOT NULL COLLATE NOCASE,
ttl INTEGER NOT NULL,
rdtype STRING NOT NULL COLLATE NOCASE,
rdata STRING NOT NULL)""")
rdtype TEXT NOT NULL COLLATE NOCASE,
rdata TEXT NOT NULL)""")
cur.execute("CREATE INDEX nsec3_byhash ON nsec3 (hash)")
cur.execute("""CREATE TABLE diffs (id INTEGER PRIMARY KEY,
zone_id INTEGER NOT NULL,
version INTEGER NOT NULL,
operation INTEGER NOT NULL,
name STRING NOT NULL COLLATE NOCASE,
rrtype STRING NOT NULL COLLATE NOCASE,
name TEXT NOT NULL COLLATE NOCASE,
rrtype TEXT NOT NULL COLLATE NOCASE,
ttl INTEGER NOT NULL,
rdata STRING NOT NULL)""")
row = [1]
rdata TEXT NOT NULL)""")
cur.execute("SELECT version FROM schema_version")
row = cur.fetchone()
cur.execute("COMMIT TRANSACTION")
return row
@@ -115,8 +122,9 @@ def open(dbfile, connect_timeout=5.0):
row = create(cur)
conn.isolation_level = iso_lvl
if row == None or row[0] != 1:
raise Sqlite3DSError("Bad database schema version")
if row == None or row[0] != SCHEMA_VERSION:
bad_version = "(unknown)" if row is None else str(row[0])
raise Sqlite3DSError("Bad database schema version: " + bad_version)
return conn, cur