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send projection information to the readSnapshot middleware #1

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send projection information to the readSnapshot middleware #1

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8fe01fc
send projection information to the readSnapshot middleware
dcharbonnier Aug 1, 2018
0513186
fix projectsSnapshots condition
dcharbonnier Aug 1, 2018
3d0859c
remove duplicate object key
dcharbonnier Aug 1, 2018
c7913bb
merge
dcharbonnier Nov 22, 2018
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30 changes: 15 additions & 15 deletions lib/backend.js
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Original file line number Diff line number Diff line change
Expand Up @@ -82,6 +82,9 @@ Backend.prototype._shimDocAction = function() {
this.use(this.MIDDLEWARE_ACTIONS.readSnapshots, function(request, callback) {
async.each(request.snapshots, function(snapshot, eachCb) {
var docRequest = {collection: request.collection, id: snapshot.id, snapshot: snapshot};
if(request.projection) {
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sharedb-access expect an index property and use the deprecated doc middleware

docRequest.index = request.projection.index;
}
backend.trigger(backend.MIDDLEWARE_ACTIONS.doc, request.agent, docRequest, eachCb);
}, callback);
});
Expand Down Expand Up @@ -166,6 +169,7 @@ Backend.prototype.addProjection = function(name, collection, fields) {
}

this.projections[name] = {
index: name,
target: collection,
fields: fields
};
Expand Down Expand Up @@ -259,22 +263,18 @@ Backend.prototype._sanitizeOpsBulk = function(agent, projection, collection, ops
}, callback);
};

Backend.prototype._sanitizeSnapshots = function(agent, projection, collection, snapshots, callback) {
if (projection) {
Backend.prototype._sanitizeSnapshots = function(agent, projectSnapshots, projection, collection, snapshots, callback) {
if (projectSnapshots && projection) {
try {
projections.projectSnapshots(projection.fields, snapshots);
} catch (err) {
return callback(err);
}
}
var request = {collection: collection, snapshots: snapshots};
var request = {collection: collection, snapshots: snapshots, projection: projection};
this.trigger(this.MIDDLEWARE_ACTIONS.readSnapshots, agent, request, callback);
};

Backend.prototype._getSnapshotProjection = function(db, projection) {
return (db.projectsSnapshots) ? null : projection;
};

Backend.prototype._getSnapshotsFromMap = function(ids, snapshotMap) {
var snapshots = new Array(ids.length);
for (var i = 0; i < ids.length; i++) {
Expand Down Expand Up @@ -345,9 +345,9 @@ Backend.prototype.fetch = function(agent, index, id, callback) {
};
backend.db.getSnapshot(collection, id, fields, null, function(err, snapshot) {
if (err) return callback(err);
var snapshotProjection = backend._getSnapshotProjection(backend.db, projection);
var projectsSnapshots = backend.db.projectsSnapshots;
var snapshots = [snapshot];
backend._sanitizeSnapshots(agent, snapshotProjection, collection, snapshots, function(err) {
backend._sanitizeSnapshots(agent, projectsSnapshots, projection, collection, snapshots, function(err) {
if (err) return callback(err);
backend.emit('timing', 'fetch', Date.now() - start, request);
callback(null, snapshot);
Expand All @@ -369,9 +369,9 @@ Backend.prototype.fetchBulk = function(agent, index, ids, callback) {
};
backend.db.getSnapshotBulk(collection, ids, fields, null, function(err, snapshotMap) {
if (err) return callback(err);
var snapshotProjection = backend._getSnapshotProjection(backend.db, projection);
var projectsSnapshots = backend.db.projectsSnapshots;
var snapshots = backend._getSnapshotsFromMap(ids, snapshotMap);
backend._sanitizeSnapshots(agent, snapshotProjection, collection, snapshots, function(err) {
backend._sanitizeSnapshots(agent, projectsSnapshots, projection, collection, snapshots, function(err) {
if (err) return callback(err);
backend.emit('timing', 'fetchBulk', Date.now() - start, request);
callback(null, snapshotMap);
Expand Down Expand Up @@ -541,7 +541,7 @@ Backend.prototype._triggerQuery = function(agent, index, query, options, callbac
query: query,
options: options,
db: null,
snapshotProjection: null,
projectsSnapshots: false,
};
var backend = this;
backend.trigger(backend.MIDDLEWARE_ACTIONS.query, agent, request, function(err) {
Expand All @@ -550,7 +550,7 @@ Backend.prototype._triggerQuery = function(agent, index, query, options, callbac
// that the db option can be changed in middleware
request.db = (options.db) ? backend.extraDbs[options.db] : backend.db;
if (!request.db) return callback({code: 4003, message: 'DB not found'});
request.snapshotProjection = backend._getSnapshotProjection(request.db, projection);
request.projectsSnapshots = backend.db.projectsSnapshots;
callback(null, request);
});
};
Expand All @@ -559,7 +559,7 @@ Backend.prototype._query = function(agent, request, callback) {
var backend = this;
request.db.query(request.collection, request.query, request.fields, request.options, function(err, snapshots, extra) {
if (err) return callback(err);
backend._sanitizeSnapshots(agent, request.snapshotProjection, request.collection, snapshots, function(err) {
backend._sanitizeSnapshots(agent, request.projectsSnapshots, request.projection, request.collection, snapshots, function(err) {
callback(err, snapshots, extra);
});
});
Expand Down Expand Up @@ -591,4 +591,4 @@ function pluckIds(snapshots) {
ids.push(snapshots[i].id);
}
return ids;
}
}
7 changes: 4 additions & 3 deletions lib/query-emitter.js
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Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,8 @@ function QueryEmitter(request, stream, ids, extra) {
this.collection = request.collection;
this.fields = request.fields;
this.options = request.options;
this.snapshotProjection = request.snapshotProjection;
this.projectSnapshots = request.projectSnapshots;
this.projection = request.projection;
this.stream = stream;
this.ids = ids;
this.extra = extra;
Expand Down Expand Up @@ -186,7 +187,7 @@ QueryEmitter.prototype.queryPoll = function(callback) {
emitter.db.getSnapshotBulk(emitter.collection, inserted, emitter.fields, null, function(err, snapshotMap) {
if (err) return emitter._finishPoll(err, callback, pending);
var snapshots = emitter.backend._getSnapshotsFromMap(inserted, snapshotMap);
emitter.backend._sanitizeSnapshots(emitter.agent, emitter.snapshotProjection, emitter.collection, snapshots, function(err) {
emitter.backend._sanitizeSnapshots(emitter.agent, emitter.projectSnapshots, emitter.projection, emitter.collection, snapshots, function(err) {
if (err) return emitter._finishPoll(err, callback, pending);
emitter._emitTiming('queryEmitter.pollGetSnapshotBulk', start);
var diff = mapDiff(idsDiff, snapshotMap);
Expand Down Expand Up @@ -234,7 +235,7 @@ QueryEmitter.prototype.queryPollDoc = function(id, callback) {
emitter.db.getSnapshot(emitter.collection, id, emitter.fields, null, function(err, snapshot) {
if (err) return callback(err);
var snapshots = [snapshot];
emitter.backend._sanitizeSnapshots(emitter.agent, emitter.snapshotProjection, emitter.collection, snapshots, function(err) {
emitter.backend._sanitizeSnapshots(emitter.agent, emitter.projectSnapshots, emitter.projection, emitter.collection, snapshots, function(err) {
if (err) return callback(err);
emitter.onDiff([new arraydiff.InsertDiff(index, snapshots)]);
emitter._emitTiming('queryEmitter.pollDocGetSnapshot', start);
Expand Down