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Add dirty check to playlist for efficiency of channel saving

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This commit is contained in:
Calvin Montgomery 2017-12-16 10:34:04 -08:00
parent a4e72a002a
commit 0c330a82ce
4 changed files with 73 additions and 16 deletions
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14
src/channel-storage/dbstore.js
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@ -10,10 +10,18 @@ const loadRowcount = new Counter({
name: 'cytube_channel_db_load_rows_total',
help: 'Total rows loaded from the channel_data table'
});
const loadCharcount = new Counter({
name: 'cytube_channel_db_load_chars_total',
help: 'Total characters (JSON length) loaded from the channel_data table'
});
const saveRowcount = new Counter({
name: 'cytube_channel_db_save_rows_total',
help: 'Total rows saved in the channel_data table'
});
const saveCharcount = new Counter({
name: 'cytube_channel_db_save_chars_total',
help: 'Total characters (JSON length) saved in the channel_data table'
});
function queryAsync(query, substitutions) {
return new Promise((resolve, reject) => {
@ -54,6 +62,7 @@ export class DatabaseStore {
rows.forEach(row => {
try {
data[row.key] = JSON.parse(row.value);
loadCharcount.inc(row.value.length);
} catch (e) {
LOGGER.error(`Channel data for channel "${channelName}", ` +
`key "${row.key}" is invalid: ${e}`);
@ -95,8 +104,6 @@ export class DatabaseStore {
return;
}
saveRowcount.inc(rowCount);
if (totalSize > SIZE_LIMIT) {
throw new ChannelStateSizeError(
'Channel state size is too large', {
@ -105,6 +112,9 @@ export class DatabaseStore {
});
}
saveRowcount.inc(rowCount);
saveCharcount.inc(totalSize);
return await queryAsync(buildUpdateQuery(rowCount), substitutions);
}
}