packages/client/lib/commands/MEMORY_STATS.ts
export function transformArguments(): Array<string> {
return ['MEMORY', 'STATS'];
}
interface MemoryStatsReply {
peakAllocated: number;
totalAllocated: number;
startupAllocated: number;
replicationBacklog: number;
clientsReplicas: number;
clientsNormal: number;
aofBuffer: number;
luaCaches: number;
overheadTotal: number;
keysCount: number;
keysBytesPerKey: number;
datasetBytes: number;
datasetPercentage: number;
peakPercentage: number;
allocatorAllocated?: number,
allocatorActive?: number;
allocatorResident?: number;
allocatorFragmentationRatio?: number;
allocatorFragmentationBytes?: number;
allocatorRssRatio?: number;
allocatorRssBytes?: number;
rssOverheadRatio?: number;
rssOverheadBytes?: number;
fragmentation?: number;
fragmentationBytes: number;
db: {
[key: number]: {
overheadHashtableMain: number;
overheadHashtableExpires: number;
};
};
}
const FIELDS_MAPPING = {
'peak.allocated': 'peakAllocated',
'total.allocated': 'totalAllocated',
'startup.allocated': 'startupAllocated',
'replication.backlog': 'replicationBacklog',
'clients.slaves': 'clientsReplicas',
'clients.normal': 'clientsNormal',
'aof.buffer': 'aofBuffer',
'lua.caches': 'luaCaches',
'overhead.total': 'overheadTotal',
'keys.count': 'keysCount',
'keys.bytes-per-key': 'keysBytesPerKey',
'dataset.bytes': 'datasetBytes',
'dataset.percentage': 'datasetPercentage',
'peak.percentage': 'peakPercentage',
'allocator.allocated': 'allocatorAllocated',
'allocator.active': 'allocatorActive',
'allocator.resident': 'allocatorResident',
'allocator-fragmentation.ratio': 'allocatorFragmentationRatio',
'allocator-fragmentation.bytes': 'allocatorFragmentationBytes',
'allocator-rss.ratio': 'allocatorRssRatio',
'allocator-rss.bytes': 'allocatorRssBytes',
'rss-overhead.ratio': 'rssOverheadRatio',
'rss-overhead.bytes': 'rssOverheadBytes',
'fragmentation': 'fragmentation',
'fragmentation.bytes': 'fragmentationBytes'
},
DB_FIELDS_MAPPING = {
'overhead.hashtable.main': 'overheadHashtableMain',
'overhead.hashtable.expires': 'overheadHashtableExpires'
};
export function transformReply(rawReply: Array<string | number | Array<string | number>>): MemoryStatsReply {
const reply: any = {
db: {}
};
for (let i = 0; i < rawReply.length; i += 2) {
const key = rawReply[i] as string;
if (key.startsWith('db.')) {
const dbTuples = rawReply[i + 1] as Array<string | number>,
db: any = {};
for (let j = 0; j < dbTuples.length; j += 2) {
db[DB_FIELDS_MAPPING[dbTuples[j] as keyof typeof DB_FIELDS_MAPPING]] = dbTuples[j + 1];
}
reply.db[key.substring(3)] = db;
continue;
}
reply[FIELDS_MAPPING[key as keyof typeof FIELDS_MAPPING]] = Number(rawReply[i + 1]);
}
return reply as MemoryStatsReply;
}