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* Implement more stuff.

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This commit is contained in:
Eelco Dolstra 2010-02-19 16:43:25 +00:00
parent 762cee72cc
commit 9c9a88e9e2
2 changed files with 50 additions and 52 deletions
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97
src/libstore/local-store.cc
View file

@ -60,6 +60,7 @@ void SQLiteStmt::reset()
assert(stmt);
if (sqlite3_reset(stmt) != SQLITE_OK)
throw SQLiteError(db, "resetting statement");
curArg = 1;
}
@ -74,6 +75,27 @@ SQLiteStmt::~SQLiteStmt()
}
void SQLiteStmt::bind(const string & value)
{
if (sqlite3_bind_text(stmt, curArg++, value.c_str(), -1, SQLITE_TRANSIENT) != SQLITE_OK)
throw SQLiteError(db, "binding argument");
}
void SQLiteStmt::bind(int value)
{
if (sqlite3_bind_int(stmt, curArg++, value) != SQLITE_OK)
throw SQLiteError(db, "binding argument");
}
void SQLiteStmt::bind()
{
if (sqlite3_bind_null(stmt, curArg++) != SQLITE_OK)
throw SQLiteError(db, "binding argument");
}
/* Helper class to ensure that prepared statements are reset when
leaving the scope that uses them. Unfinished prepared statements
prevent transactions from being aborted, and can cause locks to be
@ -264,6 +286,8 @@ void LocalStore::prepareStatements()
"select path from Refs join ValidPaths on reference = id where referrer = ?;");
stmtQueryReferrers.create(db,
"select path from Refs join ValidPaths on referrer = id where reference = (select id from ValidPaths where path = ?);");
stmtInvalidatePath.create(db,
"delete from ValidPaths where path = ?;");
}
@ -357,20 +381,13 @@ void LocalStore::registerValidPath(const Path & path,
unsigned long long LocalStore::addValidPath(const ValidPathInfo & info)
{
SQLiteStmtUse use(stmtRegisterValidPath);
if (sqlite3_bind_text(stmtRegisterValidPath, 1, info.path.c_str(), -1, SQLITE_TRANSIENT) != SQLITE_OK)
throw SQLiteError(db, "binding argument");
string h = "sha256:" + printHash(info.hash);
if (sqlite3_bind_text(stmtRegisterValidPath, 2, h.c_str(), -1, SQLITE_TRANSIENT) != SQLITE_OK)
throw SQLiteError(db, "binding argument");
if (sqlite3_bind_int(stmtRegisterValidPath, 3, info.registrationTime) != SQLITE_OK)
throw SQLiteError(db, "binding argument");
if (info.deriver != "") {
if (sqlite3_bind_text(stmtRegisterValidPath, 4, info.deriver.c_str(), -1, SQLITE_TRANSIENT) != SQLITE_OK)
throw SQLiteError(db, "binding argument");
} else {
if (sqlite3_bind_null(stmtRegisterValidPath, 4) != SQLITE_OK)
throw SQLiteError(db, "binding argument");
}
stmtRegisterValidPath.bind(info.path);
stmtRegisterValidPath.bind("sha256:" + printHash(info.hash));
stmtRegisterValidPath.bind(info.registrationTime);
if (info.deriver != "")
stmtRegisterValidPath.bind(info.deriver);
else
stmtRegisterValidPath.bind(); // null
if (sqlite3_step(stmtRegisterValidPath) != SQLITE_DONE)
throw SQLiteError(db, format("registering valid path `%1%' in database") % info.path);
return sqlite3_last_insert_rowid(db);
@ -380,10 +397,8 @@ unsigned long long LocalStore::addValidPath(const ValidPathInfo & info)
void LocalStore::addReference(unsigned long long referrer, unsigned long long reference)
{
SQLiteStmtUse use(stmtAddReference);
if (sqlite3_bind_int(stmtAddReference, 1, referrer) != SQLITE_OK)
throw SQLiteError(db, "binding argument");
if (sqlite3_bind_int(stmtAddReference, 2, reference) != SQLITE_OK)
throw SQLiteError(db, "binding argument");
stmtAddReference.bind(referrer);
stmtAddReference.bind(reference);
if (sqlite3_step(stmtAddReference) != SQLITE_DONE)
throw SQLiteError(db, "adding reference to database");
}
@ -443,9 +458,8 @@ ValidPathInfo LocalStore::queryPathInfo(const Path & path)
/* Get the path info. */
SQLiteStmtUse use1(stmtQueryPathInfo);
if (sqlite3_bind_text(stmtQueryPathInfo, 1, path.c_str(), -1, SQLITE_TRANSIENT) != SQLITE_OK)
throw SQLiteError(db, "binding argument");
stmtQueryPathInfo.bind(path);
int r = sqlite3_step(stmtQueryPathInfo);
if (r == SQLITE_DONE) throw Error(format("path `%1%' is not valid") % path);
@ -465,8 +479,7 @@ ValidPathInfo LocalStore::queryPathInfo(const Path & path)
/* Get the references. */
SQLiteStmtUse use2(stmtQueryReferences);
if (sqlite3_bind_int(stmtQueryReferences, 1, info.id) != SQLITE_OK)
throw SQLiteError(db, "binding argument");
stmtQueryReferences.bind(info.id);
while ((r = sqlite3_step(stmtQueryReferences)) == SQLITE_ROW) {
s = (const char *) sqlite3_column_text(stmtQueryReferences, 0);
@ -484,8 +497,7 @@ ValidPathInfo LocalStore::queryPathInfo(const Path & path)
bool LocalStore::isValidPath(const Path & path)
{
SQLiteStmtUse use(stmtQueryPathInfo);
if (sqlite3_bind_text(stmtQueryPathInfo, 1, path.c_str(), -1, SQLITE_TRANSIENT) != SQLITE_OK)
throw SQLiteError(db, "binding argument");
stmtQueryPathInfo.bind(path);
int res = sqlite3_step(stmtQueryPathInfo);
if (res != SQLITE_DONE && res != SQLITE_ROW)
throw SQLiteError(db, "querying path in database");
@ -528,8 +540,7 @@ void LocalStore::queryReferrers(const Path & path, PathSet & referrers)
SQLiteStmtUse use(stmtQueryReferrers);
if (sqlite3_bind_text(stmtQueryReferrers, 1, path.c_str(), -1, SQLITE_TRANSIENT) != SQLITE_OK)
throw SQLiteError(db, "binding argument");
stmtQueryReferrers.bind(path);
int r;
while ((r = sqlite3_step(stmtQueryReferrers)) == SQLITE_ROW) {
@ -699,26 +710,17 @@ void LocalStore::registerValidPaths(const ValidPathInfos & infos)
there are no referrers. */
void LocalStore::invalidatePath(const Path & path)
{
throw Error("not implemented");
#if 0
debug(format("invalidating path `%1%'") % path);
SQLiteStmtUse use(stmtInvalidatePath);
ValidPathInfo info;
stmtInvalidatePath.bind(path);
if (pathExists(infoFileFor(path))) {
info = queryPathInfo(path);
if (sqlite3_step(stmtInvalidatePath) != SQLITE_DONE)
throw SQLiteError(db, format("invalidating path `%1%' in database") % path);
/* Remove the info file. */
Path p = infoFileFor(path);
if (unlink(p.c_str()) == -1)
throw SysError(format("unlinking `%1%'") % p);
}
/* Remove the referrers file for `path'. */
Path p = referrersFileFor(path);
if (pathExists(p) && unlink(p.c_str()) == -1)
throw SysError(format("unlinking `%1%'") % p);
#endif
/* Note that the foreign key constraints on the Refs table take
care of deleting the references entries for `path'. */
}
@ -1022,19 +1024,11 @@ Path LocalStore::importPath(bool requireSignature, Source & source)
void LocalStore::deleteFromStore(const Path & path, unsigned long long & bytesFreed,
unsigned long long & blocksFreed)
{
throw Error("not implemented");
#if 0
bytesFreed = 0;
assertStorePath(path);
if (isValidPath(path)) {
/* Acquire a lock on the referrers file to prevent new
referrers to this path from appearing while we're deleting
it. */
PathLocks referrersLock(singleton<PathSet, Path>(referrersFileFor(path)));
referrersLock.setDeletion(true);
PathSet referrers; queryReferrers(path, referrers);
referrers.erase(path); /* ignore self-references */
if (!referrers.empty())
@ -1044,7 +1038,6 @@ void LocalStore::deleteFromStore(const Path & path, unsigned long long & bytesFr
}
deletePathWrapped(path, bytesFreed, blocksFreed);
#endif
}

5
src/libstore/local-store.hh
View file

@ -61,11 +61,15 @@ struct SQLiteStmt
{
sqlite3 * db;
sqlite3_stmt * stmt;
unsigned int curArg;
SQLiteStmt() { stmt = 0; }
void create(sqlite3 * db, const string & s);
void reset();
~SQLiteStmt();
operator sqlite3_stmt * () { return stmt; }
void bind(const string & value);
void bind(int value);
void bind();
};
@ -191,6 +195,7 @@ private:
SQLiteStmt stmtQueryPathInfo;
SQLiteStmt stmtQueryReferences;
SQLiteStmt stmtQueryReferrers;
SQLiteStmt stmtInvalidatePath;
int getSchema();