1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 | 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 | 'use strict'; var utils = require('../../utils'); var errors = require('../../deps/errors'); var preprocessAttachments = require('../../deps/docs/preprocessAttachments'); var isLocalId = require('../../deps/docs/isLocalId'); var processDocs = require('../../deps/docs/processDocs'); var websqlUtils = require('./utils'); var websqlConstants = require('./constants'); var DOC_STORE = websqlConstants.DOC_STORE; var BY_SEQ_STORE = websqlConstants.BY_SEQ_STORE; var ATTACH_STORE = websqlConstants.ATTACH_STORE; var ATTACH_AND_SEQ_STORE = websqlConstants.ATTACH_AND_SEQ_STORE; var select = websqlUtils.select; var stringifyDoc = websqlUtils.stringifyDoc; var compactRevs = websqlUtils.compactRevs; var unknownError = websqlUtils.unknownError; function websqlBulkDocs(req, opts, api, db, Changes, callback) { var newEdits = opts.new_edits; var userDocs = req.docs; // Parse the docs, give them a sequence number for the result var docInfos = userDocs.map(function (doc) { if (doc._id && isLocalId(doc._id)) { return doc; } var newDoc = utils.parseDoc(doc, newEdits); return newDoc; }); var docInfoErrors = docInfos.filter(function (docInfo) { return docInfo.error; }); if (docInfoErrors.length) { return callback(docInfoErrors[0]); } var tx; var results = new Array(docInfos.length); var fetchedDocs = new utils.Map(); var preconditionErrored; function complete() { if (preconditionErrored) { return callback(preconditionErrored); } Changes.notify(api._name); api._docCount = -1; // invalidate callback(null, results); } function verifyAttachment(digest, callback) { var sql = 'SELECT count(*) as cnt FROM ' + ATTACH_STORE + ' WHERE digest=?'; tx.executeSql(sql, [digest], function (tx, result) { if (result.rows.item(0).cnt === 0) { var err = errors.error(errors.MISSING_STUB, 'unknown stub attachment with digest ' + digest); callback(err); } else { callback(); } }); } function verifyAttachments(finish) { var digests = []; docInfos.forEach(function (docInfo) { if (docInfo.data && docInfo.data._attachments) { Object.keys(docInfo.data._attachments).forEach(function (filename) { var att = docInfo.data._attachments[filename]; if (att.stub) { digests.push(att.digest); } }); } }); if (!digests.length) { return finish(); } var numDone = 0; var err; function checkDone() { if (++numDone === digests.length) { finish(err); } } digests.forEach(function (digest) { verifyAttachment(digest, function (attErr) { if (attErr && !err) { err = attErr; } checkDone(); }); }); } function writeDoc(docInfo, winningRev, winningRevIsDeleted, newRevIsDeleted, isUpdate, delta, resultsIdx, callback) { function finish() { var data = docInfo.data; var deletedInt = newRevIsDeleted ? 1 : 0; var id = data._id; var rev = data._rev; var json = stringifyDoc(data); var sql = 'INSERT INTO ' + BY_SEQ_STORE + ' (doc_id, rev, json, deleted) VALUES (?, ?, ?, ?);'; var sqlArgs = [id, rev, json, deletedInt]; // map seqs to attachment digests, which // we will need later during compaction function insertAttachmentMappings(seq, callback) { var attsAdded = 0; var attsToAdd = Object.keys(data._attachments || {}); if (!attsToAdd.length) { return callback(); } function checkDone() { if (++attsAdded === attsToAdd.length) { callback(); } return false; // ack handling a constraint error } function add(att) { var sql = 'INSERT INTO ' + ATTACH_AND_SEQ_STORE + ' (digest, seq) VALUES (?,?)'; var sqlArgs = [data._attachments[att].digest, seq]; tx.executeSql(sql, sqlArgs, checkDone, checkDone); // second callback is for a constaint error, which we ignore // because this docid/rev has already been associated with // the digest (e.g. when new_edits == false) } for (var i = 0; i < attsToAdd.length; i++) { add(attsToAdd[i]); // do in parallel } } tx.executeSql(sql, sqlArgs, function (tx, result) { var seq = result.insertId; insertAttachmentMappings(seq, function () { dataWritten(tx, seq); }); }, function () { // constraint error, recover by updating instead (see #1638) var fetchSql = select('seq', BY_SEQ_STORE, null, 'doc_id=? AND rev=?'); tx.executeSql(fetchSql, [id, rev], function (tx, res) { var seq = res.rows.item(0).seq; var sql = 'UPDATE ' + BY_SEQ_STORE + ' SET json=?, deleted=? WHERE doc_id=? AND rev=?;'; var sqlArgs = [json, deletedInt, id, rev]; tx.executeSql(sql, sqlArgs, function (tx) { insertAttachmentMappings(seq, function () { dataWritten(tx, seq); }); }); }); return false; // ack that we've handled the error }); } function collectResults(attachmentErr) { if (!err) { if (attachmentErr) { err = attachmentErr; callback(err); } else if (recv === attachments.length) { finish(); } } } var err = null; var recv = 0; docInfo.data._id = docInfo.metadata.id; docInfo.data._rev = docInfo.metadata.rev; var attachments = Object.keys(docInfo.data._attachments || {}); if (newRevIsDeleted) { docInfo.data._deleted = true; } function attachmentSaved(err) { recv++; collectResults(err); } attachments.forEach(function (key) { var att = docInfo.data._attachments[key]; if (!att.stub) { var data = att.data; delete att.data; var digest = att.digest; saveAttachment(digest, data, attachmentSaved); } else { recv++; collectResults(); } }); if (!attachments.length) { finish(); } function autoCompact() { if (!isUpdate || !api.auto_compaction) { return; // nothing to do } var id = docInfo.metadata.id; var revsToDelete = utils.compactTree(docInfo.metadata); compactRevs(revsToDelete, id, tx); } function dataWritten(tx, seq) { autoCompact(); docInfo.metadata.seq = seq; delete docInfo.metadata.rev; var sql = isUpdate ? 'UPDATE ' + DOC_STORE + ' SET json=?, max_seq=?, winningseq=' + '(SELECT seq FROM ' + BY_SEQ_STORE + ' WHERE doc_id=' + DOC_STORE + '.id AND rev=?) WHERE id=?' : 'INSERT INTO ' + DOC_STORE + ' (id, winningseq, max_seq, json) VALUES (?,?,?,?);'; var metadataStr = utils.safeJsonStringify(docInfo.metadata); var id = docInfo.metadata.id; var params = isUpdate ? [metadataStr, seq, winningRev, id] : [id, seq, seq, metadataStr]; tx.executeSql(sql, params, function () { results[resultsIdx] = { ok: true, id: docInfo.metadata.id, rev: winningRev }; fetchedDocs.set(id, docInfo.metadata); callback(); }); } } function websqlProcessDocs() { processDocs(docInfos, api, fetchedDocs, tx, results, writeDoc, opts); } function fetchExistingDocs(callback) { if (!docInfos.length) { return callback(); } var numFetched = 0; function checkDone() { if (++numFetched === docInfos.length) { callback(); } } docInfos.forEach(function (docInfo) { if (docInfo._id && isLocalId(docInfo._id)) { return checkDone(); // skip local docs } var id = docInfo.metadata.id; tx.executeSql('SELECT json FROM ' + DOC_STORE + ' WHERE id = ?', [id], function (tx, result) { if (result.rows.length) { var metadata = utils.safeJsonParse(result.rows.item(0).json); fetchedDocs.set(id, metadata); } checkDone(); }); }); } function saveAttachment(digest, data, callback) { var sql = 'SELECT digest FROM ' + ATTACH_STORE + ' WHERE digest=?'; tx.executeSql(sql, [digest], function (tx, result) { if (result.rows.length) { // attachment already exists return callback(); } // we could just insert before selecting and catch the error, // but my hunch is that it's cheaper not to serialize the blob // from JS to C if we don't have to (TODO: confirm this) sql = 'INSERT INTO ' + ATTACH_STORE + ' (digest, body, escaped) VALUES (?,?,1)'; tx.executeSql(sql, [digest, websqlUtils.escapeBlob(data)], function () { callback(); }, function () { // ignore constaint errors, means it already exists callback(); return false; // ack we handled the error }); }); } preprocessAttachments(docInfos, 'binary', function (err) { if (err) { return callback(err); } db.transaction(function (txn) { tx = txn; verifyAttachments(function (err) { if (err) { preconditionErrored = err; } else { fetchExistingDocs(websqlProcessDocs); } }); }, unknownError(callback), complete); }); } module.exports = websqlBulkDocs; |