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Document recommended sql queries

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This commit is contained in:
Jeremy Lakeman 2012-05-28 09:03:49 +09:30
parent 884e427fbb
commit 0e75cbdcad
1 changed files with 53 additions and 12 deletions
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65
rhizome_database.c
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@ -451,6 +451,18 @@ int rhizome_store_bundle(rhizome_manifest *m)
{
if (!m->finalised) return WHY("Manifest was not finalised");
if (m->haveSecret) {
/* We used to store the secret in the database, but we don't anymore, as we use
the BK field in the manifest. So nothing to do here. */
} else {
/* We don't have the secret for this manifest, so only allow updates if
the self-signature is valid */
if (!m->selfSigned) {
WHY("*** Insert into manifests failed (-2).");
return WHY("Manifest is not signed, and I don't have the key. Manifest might be forged or corrupt.");
}
}
char manifestid[RHIZOME_MANIFEST_ID_STRLEN + 1];
rhizome_manifest_get(m, "id", manifestid, sizeof manifestid);
str_toupper_inplace(manifestid);
@ -459,6 +471,47 @@ int rhizome_store_bundle(rhizome_manifest *m)
strncpy(filehash, m->fileHexHash, sizeof filehash);
str_toupper_inplace(filehash);
/* process should be;
BEGIN TRANSACTION;
try{
// insert new file contents, if not already there
// dont risk losing the old manifest if something fails
UPDATE MANIFESTS
SET manifest = ?,
version = ?,
insserttime = ?,
bar = ?
WHERE id = ?;
if (no rows updated){
INSERT INTO MANIFESTS (id,manifest,version,inserttime,bar)
VALUES (?,?,?,?,?);
}
// remove reference to any old file versions
DELETE FROM FILEMANIFESTS
WHERE manifestid=?
AND fileid != ?;
// remove unreferenced files
DELETE FROM FILES f
AND NOT EXISTS(
SELECT 1
FROM FILEMANIFESTS fm
AND fm.fileid = f.id
);
COMMIT;
}catch (){
// if one step fails, all fail.
ROLLBACK;
}
*/
/* remove any old version of the manifest */
if (sqlite_exec_int64("SELECT COUNT(*) FROM MANIFESTS WHERE id='%s';",manifestid)>0)
{
@ -485,18 +538,6 @@ int rhizome_store_bundle(rhizome_manifest *m)
"INSERT INTO MANIFESTS(id,manifest,version,inserttime,bar) VALUES('%s',?,%lld,%lld,?);",
manifestid, m->version, gettime_ms());
if (m->haveSecret) {
/* We used to store the secret in the database, but we don't anymore, as we use
the BK field in the manifest. So nothing to do here. */
} else {
/* We don't have the secret for this manifest, so only allow updates if
the self-signature is valid */
if (!m->selfSigned) {
WHY("*** Insert into manifests failed (-2).");
return WHY("Manifest is not signed, and I don't have the key. Manifest might be forged or corrupt.");
}
}
const char *cmdtail;
sqlite3_stmt *statement;
if (sqlite3_prepare_v2(rhizome_db,sqlcmd,strlen(sqlcmd)+1,&statement,&cmdtail) != SQLITE_OK) {