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1× | 'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _fs = require('fs');
var _fs2 = _interopRequireDefault(_fs);
var _path = require('path');
var _path2 = _interopRequireDefault(_path);
var _isLocalId = require('./docs/isLocalId');
var _isLocalId2 = _interopRequireDefault(_isLocalId);
var _winningRev = require('../deps/merge/winningRev');
var _winningRev2 = _interopRequireDefault(_winningRev);
var _levelup = require('levelup');
var _levelup2 = _interopRequireDefault(_levelup);
var _through = require('through2');
var _levelWriteStream = require('level-write-stream');
var _levelWriteStream2 = _interopRequireDefault(_levelWriteStream);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
var stores = ['document-store', 'by-sequence', 'attach-store', 'attach-binary-store'];
function formatSeq(n) {
return ('0000000000000000' + n).slice(-16);
}
var UPDATE_SEQ_KEY = '_local_last_update_seq';
var DOC_COUNT_KEY = '_local_doc_count';
var UUID_KEY = '_local_uuid';
var toSublevel = function (name, db, callback) {
// local require to prevent crashing if leveldown isn't installed.
var leveldown = require("leveldown");
var base = _path2.default.resolve(name);
function move(store, index, cb) {
var storePath = _path2.default.join(base, store);
var opts;
if (index === 3) {
opts = {
valueEncoding: 'binary'
};
} else {
opts = {
valueEncoding: 'json'
};
}
var sub = db.sublevel(store, opts);
var orig = (0, _levelup2.default)(storePath, opts);
var from = orig.createReadStream();
var writeStream = new _levelWriteStream2.default(sub);
var to = writeStream();
from.on('end', function () {
orig.close(function (err) {
cb(err, storePath);
});
});
from.pipe(to);
}
_fs2.default.unlink(base + '.uuid', function (err) {
if (err) {
return callback();
}
var todo = 4;
var done = [];
stores.forEach(function (store, i) {
move(store, i, function (err, storePath) {
/* istanbul ignore if */
Iif (err) {
return callback(err);
}
done.push(storePath);
if (! --todo) {
done.forEach(function (item) {
leveldown.destroy(item, function () {
if (++todo === done.length) {
_fs2.default.rmdir(base, callback);
}
});
});
}
});
});
});
};
var localAndMetaStores = function (db, stores, callback) {
var batches = [];
stores.bySeqStore.get(UUID_KEY, function (err, value) {
if (err) {
// no uuid key, so don't need to migrate;
return callback();
}
batches.push({
key: UUID_KEY,
value: value,
prefix: stores.metaStore,
type: 'put',
valueEncoding: 'json'
});
batches.push({
key: UUID_KEY,
prefix: stores.bySeqStore,
type: 'del'
});
stores.bySeqStore.get(DOC_COUNT_KEY, function (err, value) {
Eif (value) {
// if no doc count key,
// just skip
// we can live with this
batches.push({
key: DOC_COUNT_KEY,
value: value,
prefix: stores.metaStore,
type: 'put',
valueEncoding: 'json'
});
batches.push({
key: DOC_COUNT_KEY,
prefix: stores.bySeqStore,
type: 'del'
});
}
stores.bySeqStore.get(UPDATE_SEQ_KEY, function (err, value) {
Eif (value) {
// if no UPDATE_SEQ_KEY
// just skip
// we've gone to far to stop.
batches.push({
key: UPDATE_SEQ_KEY,
value: value,
prefix: stores.metaStore,
type: 'put',
valueEncoding: 'json'
});
batches.push({
key: UPDATE_SEQ_KEY,
prefix: stores.bySeqStore,
type: 'del'
});
}
var deletedSeqs = {};
stores.docStore.createReadStream({
startKey: '_',
endKey: '_\xFF'
}).pipe((0, _through.obj)(function (ch, _, next) {
if (!(0, _isLocalId2.default)(ch.key)) {
return next();
}
batches.push({
key: ch.key,
prefix: stores.docStore,
type: 'del'
});
var winner = (0, _winningRev2.default)(ch.value);
Object.keys(ch.value.rev_map).forEach(function (key) {
Eif (key !== 'winner') {
this.push(formatSeq(ch.value.rev_map[key]));
}
}, this);
var winningSeq = ch.value.rev_map[winner];
stores.bySeqStore.get(formatSeq(winningSeq), function (err, value) {
Eif (!err) {
batches.push({
key: ch.key,
value: value,
prefix: stores.localStore,
type: 'put',
valueEncoding: 'json'
});
}
next();
});
})).pipe((0, _through.obj)(function (seq, _, next) {
/* istanbul ignore if */
Iif (deletedSeqs[seq]) {
return next();
}
deletedSeqs[seq] = true;
stores.bySeqStore.get(seq, function (err, resp) {
/* istanbul ignore if */
Iif (err || !(0, _isLocalId2.default)(resp._id)) {
return next();
}
batches.push({
key: seq,
prefix: stores.bySeqStore,
type: 'del'
});
next();
});
}, function (next) {
db.batch(batches, callback);
}));
});
});
});
};
exports.default = {
toSublevel: toSublevel,
localAndMetaStores: localAndMetaStores
};
module.exports = exports['default']; |