@sap/xsodata/lib/processor/processor.js

Expose data from a HANA database as OData V2 service with help of .xsodata files.

'use strict';

const odataUri = require('./../uri/oDataUriParser');

const serviceProcessor = require('./../serializer/serviceSerializer');
const metadataProcessor = require('./../serializer/metadataSerializer');
const batchProcessor = require('./../processor/batchProcessor');
const resourceProcessor = require('./resourceProcessor');
const batchRunState = require('./../utils/batch/batchConst').runState;

const Measurement = require('./../utils/measurement');

exports.processRequest = function (context, asyncDone) {
    try {
        context.logger.silly('processor', 'processRequest');

        const oData = context.oData;

        if (oData.kind === odataUri.URI_KIND_Service) {
            Measurement.measureWithCB(
                serviceProcessor.process,
                context,
                asyncDone,
                'serviceProcessor.process'
            );
        } else if (oData.kind === odataUri.URI_KIND_MetaData) {
            Measurement.measureWithCB(
                metadataProcessor.process,
                context,
                asyncDone,
                'metadataProcessor.process'
            );
        } else if (oData.kind === odataUri.URI_KIND_Batch) {
            Measurement.measureWithCB(
                batchProcessor.process,
                context,
                asyncDone,
                'batchProcessor.process'
            ); // $batch-request itself
        } else if (oData.kind === odataUri.URI_KIND_Resource) {
            if (!context.batchContext) {
                // regular request processing
                Measurement.measureWithCB(
                    resourceProcessor.process,
                    context,
                    asyncDone,
                    'resourceProcessor.process'
                );
            } else {
                const batchContext = context.batchContext; // $batch-request: operation processing (based on status)
                if (batchContext.status === batchRunState.createTables) {
                    // on batch changes: all temp. tables of all operations are generated at beginning batch
                    Measurement.measureWithCB(
                        resourceProcessor.processInBatchCreateTables,
                        context,
                        asyncDone,
                        'processInBatchCreateTables'
                    );
                } else if (batchContext.status === batchRunState.execution) {
                    Measurement.measureWithCB(
                        resourceProcessor.processInBatch,
                        context,
                        asyncDone,
                        'processInBatch'
                    );
                } else if (batchContext.status === batchRunState.preCommitRun) {
                    Measurement.measureWithCB(
                        resourceProcessor.processInBatchPreCommitRun,
                        context,
                        asyncDone,
                        'processInBatchPreCommitRun'
                    );
                } else if (
                    batchContext.status === batchRunState.postCommitRun
                ) {
                    Measurement.measureWithCB(
                        resourceProcessor.processInBatchPostCommitRun,
                        context,
                        asyncDone,
                        'processInBatchPostCommitRun'
                    );
                }
            }
        }
    } catch (ex) {
        return asyncDone(ex);
    }
};