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Merge pull request #85 from rdf-connect/v0.1.1
v0.1.1
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,123 @@ | ||
| import { getLoggerFor } from "./utils/logUtil"; | ||
| import { replicateLDES } from "./client"; | ||
| import { enhanced_fetch, processConditionFile } from "./utils"; | ||
| import { DataFactory } from "rdf-data-factory"; | ||
| import { SDS } from "@treecg/types"; | ||
| import { Writer as NWriter } from "n3"; | ||
|
|
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| import type { Writer } from "@rdfc/js-runner"; | ||
| import type { Quad_Object } from "@rdfjs/types"; | ||
| import type { Ordered } from "./client"; | ||
|
|
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| const df = new DataFactory(); | ||
|
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| export async function processor( | ||
| writer: Writer<string>, | ||
| url: string, | ||
| before?: Date, | ||
| after?: Date, | ||
| ordered?: string, | ||
| follow?: boolean, | ||
| pollInterval?: number, | ||
| shape?: string, | ||
| noShape?: boolean, | ||
| save?: string, | ||
| loose?: boolean, | ||
| urlIsView?: boolean, | ||
| fetch_config?: { | ||
| auth?: { | ||
| type: "basic"; | ||
| auth: string; | ||
| host: string; | ||
| }; | ||
| concurrent?: number; | ||
| retry?: { | ||
| codes: number[]; | ||
| maxRetries: number; | ||
| }; | ||
| }, | ||
| condition?: string, | ||
| materialize?: boolean, | ||
| lastVersionOnly?: boolean, | ||
| streamId?: string, | ||
| ) { | ||
| const logger = getLoggerFor("processor"); | ||
|
|
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| if (fetch_config?.auth) { | ||
| fetch_config.auth.host = new URL(url).host; | ||
| } | ||
|
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| const client = replicateLDES( | ||
| { | ||
| loose, | ||
| noShape, | ||
| shapeFile: shape, | ||
| polling: follow, | ||
| url: url, | ||
| stateFile: save, | ||
| pollInterval: pollInterval, | ||
| urlIsView, | ||
| after, | ||
| before, | ||
| fetch: fetch_config ? enhanced_fetch(fetch_config) : fetch, | ||
| materialize, | ||
| lastVersionOnly, | ||
| condition: await processConditionFile(condition), | ||
| }, | ||
| <Ordered>ordered || "none", | ||
| undefined, | ||
| streamId ? df.namedNode(streamId) : undefined, | ||
| ); | ||
|
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| client.on("fragment", () => logger.verbose("Fragment!")); | ||
|
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| const reader = client.stream({ highWaterMark: 10 }).getReader(); | ||
|
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| writer.on("end", async () => { | ||
| await reader.cancel(); | ||
| logger.info("Writer closed, so closing reader as well."); | ||
| }); | ||
|
|
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| return async () => { | ||
| let el = await reader.read(); | ||
| const seen = new Set(); | ||
| while (el) { | ||
| if (el.value) { | ||
| seen.add(el.value.id); | ||
|
|
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| if (seen.size % 100 == 1) { | ||
| logger.verbose( | ||
| `Got member ${seen.size} with ${el.value.quads.length} quads`, | ||
| ); | ||
| } | ||
|
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| const blank = df.blankNode(); | ||
| const quads = el.value.quads.slice(); | ||
| quads.push( | ||
| df.quad( | ||
| blank, | ||
| SDS.terms.stream, | ||
| <Quad_Object>client.streamId!, | ||
| SDS.terms.custom("DataDescription"), | ||
| ), | ||
| df.quad( | ||
| blank, | ||
| SDS.terms.payload, | ||
| <Quad_Object>el.value.id!, | ||
| SDS.terms.custom("DataDescription"), | ||
| ), | ||
| ); | ||
|
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| await writer.push(new NWriter().quadsToString(quads)); | ||
| } | ||
|
|
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| if (el.done) { | ||
| break; | ||
| } | ||
|
|
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| el = await reader.read(); | ||
| } | ||
|
|
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| logger.verbose(`Found ${seen.size} members`); | ||
| }; | ||
| } |
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