@azure/cosmos
Version:
Microsoft Azure Cosmos DB Service Node.js SDK for NOSQL API
42 lines • 2.07 kB
JavaScript
// Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.
import { MetadataLookUpType } from "../CosmosDiagnostics.js";
import { getIdFromLink } from "../common/helper.js";
import { withMetadataDiagnostics } from "../utils/diagnostics.js";
import { createCompleteRoutingMap } from "./CollectionRoutingMapFactory.js";
/** @hidden */
export class PartitionKeyRangeCache {
constructor(clientContext) {
this.clientContext = clientContext;
this.collectionRoutingMapByCollectionId = {};
}
/**
* Finds or Instantiates the requested Collection Routing Map
* @param collectionLink - Requested collectionLink
* @hidden
*/
async onCollectionRoutingMap(collectionLink, diagnosticNode, forceRefresh = false) {
const collectionId = getIdFromLink(collectionLink);
if (this.collectionRoutingMapByCollectionId[collectionId] === undefined || forceRefresh) {
this.collectionRoutingMapByCollectionId[collectionId] = this.requestCollectionRoutingMap(collectionLink, diagnosticNode);
}
return this.collectionRoutingMapByCollectionId[collectionId];
}
/**
* Given the query ranges and a collection, invokes the callback on the list of overlapping partition key ranges
* @hidden
*/
async getOverlappingRanges(collectionLink, queryRange, diagnosticNode, forceRefresh = false) {
const crm = await this.onCollectionRoutingMap(collectionLink, diagnosticNode, forceRefresh);
return crm.getOverlappingRanges(queryRange);
}
async requestCollectionRoutingMap(collectionLink, diagnosticNode) {
const { resources } = await withMetadataDiagnostics(async (metadataDiagnostics) => {
return this.clientContext
.queryPartitionKeyRanges(collectionLink)
.fetchAllInternal(metadataDiagnostics);
}, diagnosticNode, MetadataLookUpType.PartitionKeyRangeLookUp);
return createCompleteRoutingMap(resources.map((r) => [r, true]));
}
}
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