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import { HttpMethods } from '@orchesty/nodejs-sdk/dist/lib/Transport/HttpMethods';
import BatchProcessDto from '@orchesty/nodejs-sdk/dist/lib/Utils/BatchProcessDto';
import ResultCode from '@orchesty/nodejs-sdk/dist/lib/Utils/ResultCode';
import { NAME as APPLICATION_NAME } from '../LokiApplication';
export const NAME = `${APPLICATION_NAME}-get-query-list-batch`;
enum Direction {
FORWARD = 'forward',
BACKWARD = 'backward',
}
export default class LokiGetQueryListBatch extends ABatchNode {
public getName(): string {
return NAME;
}
public async processAction(dto: BatchProcessDto<IInput>): Promise<BatchProcessDto> {
const boundaryTimestamp = dto.getBatchCursor();
const { query, limit, start, end, since, interval, step, direction } = dto.getJsonData();
const params = new URLSearchParams({ query });
Iif (start || (boundaryTimestamp && direction === Direction.FORWARD)) {
params.set('start', (direction === Direction.FORWARD ? boundaryTimestamp || String(start) : String(start)));
}
Iif (end || (boundaryTimestamp && direction !== Direction.FORWARD)) {
params.set('end', (direction === Direction.FORWARD ? String(end) : boundaryTimestamp || String(end)));
}
Iif (limit) params.set('limit', String(limit));
Iif (since) params.set('since', since);
Iif (interval) params.set('interval', String(interval));
Iif (step) params.set('step', String(step));
Iif (direction) params.set('direction', direction);
const requestDto = await this.getApplication().getRequestDto(
dto,
await this.getApplicationInstallFromProcess(dto),
HttpMethods.GET,
`/loki/api/v1/query_range?${params}`,
);
const responseDto = await this.getSender().send<IOutput>(requestDto);
const { status, data } = responseDto.getJsonBody();
Iif (status !== 'success') {
dto.setStopProcess(ResultCode.STOP_AND_FAILED, 'Unexpected error occurred during LogQL query execution');
return dto;
}
const items: string[] = [];
if (data.resultType === 'streams') {
const result = data.result.flatMap((item) => item.values);
result.sort((a, b) => (
direction === Direction.FORWARD
? Number(a[0]) - Number(b[0])
: Number(b[0]) - Number(a[0])
));
items.push(...result.map((item) => item[1]));
Iif (result.length === (limit ?? 100)) {
const timestamp = Number(result[result.length - 1][0]);
dto.setBatchCursor(String(timestamp + (direction === Direction.FORWARD ? 1 : -1)));
}
} else E{
const result = data.result.flatMap((item) => item.values);
result.sort((a, b) => (direction === Direction.FORWARD ? a[0] - b[0] : b[0] - a[0]));
items.push(...result.map((item) => item[1]));
}
return dto.setItemList(items);
}
}
type Duration = `${number}${'ns' | 'us' | 'µs' | 'ms' | 's' | 'm' | 'h'}`;
export interface IInput {
/** LogQL query to retrieve data */
query: string;
/**
* Applied only to `streams` (log lines) response type. Reduces amount of log entries to specified number.
*
* - This defaults to 100
*/
limit?: number;
/**
* The unix epoch timestamp in nanoseconds or unix epoch timestamp in seconds with fractions (for floating point numbers)
* or string in `RFC3339` format which represents timestamp.
*
* - This defaults to 1 hour ago
*/
start?: number | string;
/**
* The unix epoch timestamp in nanoseconds or unix epoch timestamp in seconds with fractions (for floating point numbers)
* or string in `RFC3339` format which represents timestamp.
*
* - This defaults now
*/
end?: number | string;
/**
* A duration used to calculate `start` relative to `end`. If `start` is specified, then this value is ignored.
* If `end` is not specified or targets to future timestamp, then the `start` is calculated relatively to now.
*
* - This defaults to 1h
*/
since?: Duration;
/**
* Applied only to `matrix` response type. Query resolution step width in `duration` format or float number of seconds.
* The `duration` refers to Prometheus duration strings of the form `[0-9]+[smhdwy]`.
*
* - Defaults to a dynamic value based on start and end
*/
step?: string | number;
/**
* Applied only to `streams` response type. This iterates through logs by specified interval and returns one log entry
* at time. That means it takes first log entry within `start` then omits other entries until `start` + `interval` boundary
* is reached. Then repeats the step until `end` of interval.
*/
interval?: Duration | number;
/**
* Determines the sort order of logs.
*
* - This defaults to `backward`
*/
direction?: Direction;
}
export interface IOutput {
status: string;
data: ({
resultType: 'matrix';
result: {
metric: Record<string, unknown>;
values: [number, string][]
}[];
} | {
resultType: 'streams';
result: {
stream: Record<string, unknown>;
values: [string, string][]
}[];
}) & { stats: Statistics };
}
interface Statistics {
summary: {
bytesProcessedPerSecond: number;
linesProcessedPerSecond: number;
totalBytesProcessed: number;
totalLinesProcessed: number;
execTime: number;
queueTime: number;
subqueries: number;
totalEntriesReturned: number;
splits: number;
shards: number;
totalPostFilterLines: number;
totalStructuredMetadataBytesProcessed: number;
};
querier: {
store: Store;
};
ingester: {
totalReached: number;
totalChunksMatched: number;
totalBatches: number;
totalLinesSent: number;
store: Store;
}
cache: {
chunk: CacheStatistic;
index: CacheStatistic;
result: CacheStatistic;
statsResult: CacheStatistic;
volumeResult: CacheStatistic;
seriesResult: CacheStatistic;
labelResult: CacheStatistic;
instantMetricResult: CacheStatistic;
};
index: {
totalChunks: number;
postFilterChunks: number;
shardsDuration: number;
usedBloomFilters: boolean;
};
}
interface Store {
totalChunksRef: number;
totalChunksDownloaded: number;
chunksDownloadTime: number;
queryReferencedStructuredMetadata: boolean;
queryUsedV2Engine: boolean;
chunk: {
headChunkBytes: number;
headChunkLines: number;
decompressedBytes: number;
decompressedLines: number;
compressedBytes: number;
totalDuplicates: number;
postFilterLines: number;
headChunkStructuredMetadataBytes: number;
decompressedStructuredMetadataBytes: number;
};
chunkRefsFetchTime: number;
congestionControlLatency: number;
pipelineWrapperFilteredLines: number;
dataobj: {
prePredicateDecompressedRows: number;
prePredicateDecompressedBytes: number;
prePredicateDecompressedStructuredMetadataBytes: number;
postPredicateRows: number;
postPredicateDecompressedBytes: number;
postPredicateStructuredMetadataBytes: number;
postFilterRows: number;
pagesScanned: number;
pagesDownloaded: number;
pagesDownloadedBytes: number;
pageBatches: number;
totalRowsAvailable: number;
totalPageDownloadTime: number;
};
}
interface CacheStatistic {
entriesFound: number;
entriesRequested: number;
entriesStored: number;
bytesReceived: number;
bytesSent: number;
requests: number;
downloadTime: number;
queryLengthServed: number;
}
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