71 lines
2.5 KiB
JavaScript
71 lines
2.5 KiB
JavaScript
const { transformStatements, batchedDbUpdate, deleteFromAllGraphs } = require('./util');
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const {
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BATCH_SIZE,
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MAX_DB_RETRY_ATTEMPTS,
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SLEEP_BETWEEN_BATCHES,
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SLEEP_TIME_AFTER_FAILED_DB_OPERATION,
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INGEST_GRAPH
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} = require('./config');
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/**
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* Dispatch the fetched information to a target graph.
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* Note: <share://file/data> will be ADDED to it's own graph.
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* We take only care of adding them, not updating triples, this is a TODO
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* @param { mu, muAuthSudo } lib - The provided libraries from the host service.
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* @param { termObjectChangeSets: { deletes, inserts } } data - The fetched changes sets, which objects of serialized Terms
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* [ {
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* graph: "<http://foo>",
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* subject: "<http://bar>",
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* predicate: "<http://baz>",
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* object: "<http://boom>^^<http://datatype>"
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* }
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* ]
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* @return {void} Nothing
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*/
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async function dispatch(lib, data) {
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const { mu, muAuthSudo, fetch } = lib;
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const { termObjectChangeSets } = data;
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for (let { deletes, inserts } of termObjectChangeSets) {
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const deleteStatements = deletes.map(o => `${o.subject} ${o.predicate} ${o.object}.`);
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const insertStatements = inserts.map(o => `${o.subject} ${o.predicate} ${o.object}.`);
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if (deleteStatements.length) {
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const transformedStatementsToDelete = await transformStatements(fetch, deleteStatements);
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if (transformedStatementsToDelete.length) {
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await deleteFromAllGraphs(
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muAuthSudo.updateSudo,
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transformedStatementsToDelete,
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{ 'mu-call-scope-id': 'http://redpencil.data.gift/id/concept/muScope/deltas/write-for-dispatch' },
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process.env.MU_SPARQL_ENDPOINT, //Note: this is the default endpoint through auth
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MAX_DB_RETRY_ATTEMPTS,
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SLEEP_BETWEEN_BATCHES,
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SLEEP_TIME_AFTER_FAILED_DB_OPERATION,
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);
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}
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}
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if (insertStatements.length) {
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const transformedStatementsToInsert = await transformStatements(fetch, insertStatements);
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if (transformedStatementsToInsert.length) {
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await batchedDbUpdate(
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muAuthSudo.updateSudo,
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INGEST_GRAPH,
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transformedStatementsToInsert,
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{ 'mu-call-scope-id': 'http://redpencil.data.gift/id/concept/muScope/deltas/write-for-dispatch' },
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process.env.MU_SPARQL_ENDPOINT, //Note: this is the default endpoint through auth
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BATCH_SIZE,
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MAX_DB_RETRY_ATTEMPTS,
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SLEEP_BETWEEN_BATCHES,
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SLEEP_TIME_AFTER_FAILED_DB_OPERATION,
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"INSERT"
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);
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}
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}
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}
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}
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module.exports = {
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dispatch
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};
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