58 lines
1.8 KiB
JavaScript
58 lines
1.8 KiB
JavaScript
const { transformStatements, batchedDbUpdate } = require('./util');
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const { BYPASS_MU_AUTH_FOR_EXPENSIVE_QUERIES,
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DIRECT_DATABASE_ENDPOINT,
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MU_CALL_SCOPE_ID_INITIAL_SYNC,
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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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const endpoint = BYPASS_MU_AUTH_FOR_EXPENSIVE_QUERIES ? DIRECT_DATABASE_ENDPOINT : process.env.MU_SPARQL_ENDPOINT;
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/**
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* Dispatch the fetched information to a target graph.
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* @param { mu, muAuthSudo } lib - The provided libraries from the host service.
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* @param { termObjects } data - The fetched quad information, 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 { termObjects } = data;
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if (BYPASS_MU_AUTH_FOR_EXPENSIVE_QUERIES) {
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console.warn(`Service configured to skip MU_AUTH!`);
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}
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console.log(`Using ${endpoint} to insert triples`);
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if (termObjects.length) {
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originalInsertTriples = termObjects.map(o => `${o.subject} ${o.predicate} ${o.object}.`)
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const transformedStatementsToInsert = await transformStatements(fetch, originalInsertTriples);
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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': MU_CALL_SCOPE_ID_INITIAL_SYNC },
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endpoint,
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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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)
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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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