azurite
Version:
An open source Azure Storage API compatible server
87 lines • 3.71 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
const tslib_1 = require("tslib");
const Logger_1 = require("../../common/Logger");
const NoLoggerStrategy_1 = tslib_1.__importDefault(require("../../common/NoLoggerStrategy"));
var State;
(function (State) {
State[State["LISTING_EXTENTS_IN_BLOBS"] = 0] = "LISTING_EXTENTS_IN_BLOBS";
State[State["LISTING_EXTENTS_IN_BLOCKS"] = 1] = "LISTING_EXTENTS_IN_BLOCKS";
State[State["DONE"] = 2] = "DONE";
})(State || (State = {}));
/**
* An async iterator which enumerates all extents being used.
*
* @export
* @class BlobReferredExtentsAsyncIterator
* @implements {AsyncIterator<string[]>}
*/
class BlobReferredExtentsAsyncIterator {
constructor(blobMetadataStore, logger = new Logger_1.Logger(new NoLoggerStrategy_1.default())) {
this.blobMetadataStore = blobMetadataStore;
this.logger = logger;
this.state = State.LISTING_EXTENTS_IN_BLOBS;
}
async next() {
if (this.state === State.LISTING_EXTENTS_IN_BLOBS) {
const [blobs, marker] = await this.blobMetadataStore.listAllBlobs(undefined, this.blobListingMarker, true, // includeSnapshots
true // includeUncommitedBlobs
);
this.blobListingMarker = marker;
if (marker === undefined) {
this.state = State.LISTING_EXTENTS_IN_BLOCKS;
}
const extents = [];
for (const blob of blobs) {
this.logger.debug(`BlobReferredExtentsAsyncIterator:next() Handle blob ${blob.accountName} ${blob.containerName} ${blob.name} ${blob.snapshot} Blocks: ${(blob.committedBlocksInOrder || []).length} PageRanges: ${(blob.pageRangesInOrder || []).length} Persistency: ${blob.persistency ? blob.persistency.id : ""}`);
// this._logger.debug(
// `BlobReferredExtentsAsyncIterator:next() committedBlocksInOrder:${JSON.stringify(
// blob.committedBlocksInOrder
// )}`
// );
// this._logger.debug(
// `BlobReferredExtentsAsyncIterator:next() pageRangesInOrder:${JSON.stringify(
// blob.pageRangesInOrder
// )}`
// );
for (const block of blob.committedBlocksInOrder || []) {
extents.push(block.persistency.id);
}
for (const range of blob.pageRangesInOrder || []) {
extents.push(range.persistency.id);
}
if (blob.persistency) {
extents.push(blob.persistency.id);
}
}
return {
done: false,
value: extents
};
}
else if (this.state === State.LISTING_EXTENTS_IN_BLOCKS) {
const [blocks, marker] = await this.blobMetadataStore.listUncommittedBlockPersistencyChunks(this.blockListingMarker);
this.blockListingMarker = marker;
if (marker === undefined) {
this.state = State.DONE;
}
// this._logger.debug(
// `BlobReferredExtentsAsyncIterator:next() Handle uncommitted blocks ${
// blocks.length
// } ${JSON.stringify(blocks)}`
// );
return {
done: false,
value: blocks.map(block => block.id)
};
}
else {
return {
done: true,
value: []
};
}
}
}
exports.default = BlobReferredExtentsAsyncIterator;
//# sourceMappingURL=BlobReferredExtentsAsyncIterator.js.map