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Commit d177be73 authored by Romain Courteaud's avatar Romain Courteaud
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ReplicateStorage: respect configuration in all cases

parent ab653402
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Showing with 1028 additions and 84 deletions
src/jio.storage/replicatestorage.js
View file @ d177be73
...@@ -189,7 +189,104 @@ ...@@ -189,7 +189,104 @@
}); });
} }
function checkLocalDeletion(queue, destination, id, source) { function propagateDeletion(destination, id) {
return destination.remove(id)
.push(function () {
return context._signature_sub_storage.remove(id);
})
.push(function () {
skip_document_dict[id] = null;
});
}
function checkAndPropagate(status_hash, local_hash, doc,
source, destination, id,
conflict_force, conflict_revert,
conflict_ignore,
options) {
return destination.get(id)
.push(function (remote_doc) {
return [remote_doc, generateHash(stringify(remote_doc))];
}, function (error) {
if ((error instanceof jIO.util.jIOError) &&
(error.status_code === 404)) {
return [null, null];
}
throw error;
})
.push(function (remote_list) {
var remote_doc = remote_list[0],
remote_hash = remote_list[1];
if (local_hash === remote_hash) {
// Same modifications on both side
if (local_hash === null) {
// Deleted on both side, drop signature
return context._signature_sub_storage.remove(id)
.push(function () {
skip_document_dict[id] = null;
});
}
return context._signature_sub_storage.put(id, {
"hash": local_hash
})
.push(function () {
skip_document_dict[id] = null;
});
}
if ((remote_hash === status_hash) || (conflict_force === true)) {
// Modified only locally. No conflict or force
if (local_hash === null) {
// Deleted locally
return propagateDeletion(destination, id);
}
return propagateModification(source, destination, doc,
local_hash, id,
{use_post: ((options.use_post) &&
(remote_hash === null))});
}
// Conflict cases
if (conflict_ignore === true) {
return;
}
if ((conflict_revert === true) || (local_hash === null)) {
// Automatically resolve conflict or force revert
if (remote_hash === null) {
// Deleted remotely
return propagateDeletion(source, id);
}
return propagateModification(
destination,
source,
remote_doc,
remote_hash,
id,
{use_post: ((options.use_revert_post) &&
(local_hash === null))}
);
}
// Minimize conflict if it can be resolved
if (remote_hash === null) {
// Copy remote modification remotely
return propagateModification(source, destination, doc,
local_hash, id,
{use_post: options.use_post});
}
throw new jIO.util.jIOError("Conflict on '" + id + "': " +
stringify(doc || '') + " !== " +
stringify(remote_doc || ''),
409);
});
}
function checkLocalDeletion(queue, destination, id, source,
conflict_force, conflict_revert,
conflict_ignore, options) {
var status_hash; var status_hash;
queue queue
.push(function () { .push(function () {
...@@ -197,32 +294,11 @@ ...@@ -197,32 +294,11 @@
}) })
.push(function (result) { .push(function (result) {
status_hash = result.hash; status_hash = result.hash;
return destination.get(id) return checkAndPropagate(status_hash, null, null,
.push(function (doc) { source, destination, id,
var remote_hash = generateHash(stringify(doc)); conflict_force, conflict_revert,
if (remote_hash === status_hash) { conflict_ignore,
return destination.remove(id) options);
.push(function () {
return context._signature_sub_storage.remove(id);
})
.push(function () {
skip_document_dict[id] = null;
});
}
// Modifications on remote side
// Push them locally
return propagateModification(destination, source, doc,
remote_hash, id);
}, function (error) {
if ((error instanceof jIO.util.jIOError) &&
(error.status_code === 404)) {
return context._signature_sub_storage.remove(id)
.push(function () {
skip_document_dict[id] = null;
});
}
throw error;
});
}); });
} }
...@@ -237,7 +313,7 @@ ...@@ -237,7 +313,7 @@
if (is_creation === true) { if (is_creation === true) {
return RSVP.all([ return RSVP.all([
getMethod(id), getMethod(id),
{hash: undefined} {hash: null}
]); ]);
} }
if (is_modification === true) { if (is_modification === true) {
...@@ -256,57 +332,11 @@ ...@@ -256,57 +332,11 @@
status_hash = result_list[1].hash; status_hash = result_list[1].hash;
if (local_hash !== status_hash) { if (local_hash !== status_hash) {
// Local modifications return checkAndPropagate(status_hash, local_hash, doc,
return destination.get(id) source, destination, id,
.push(function (remote_doc) { conflict_force, conflict_revert,
var remote_hash = generateHash(stringify(remote_doc)); conflict_ignore,
if (remote_hash !== status_hash) { options);
// Modifications on both sides
if (local_hash === remote_hash) {
// Same modifications on both side \o/
return context._signature_sub_storage.put(id, {
"hash": local_hash
})
.push(function () {
skip_document_dict[id] = null;
});
}
if (conflict_ignore === true) {
return;
}
if (conflict_revert === true) {
return propagateModification(destination, source,
remote_doc,
remote_hash, id);
}
if (conflict_force === false) {
throw new jIO.util.jIOError("Conflict on '" + id + "': " +
stringify(doc) + " !== " +
stringify(remote_doc),
409);
}
}
return propagateModification(source, destination, doc,
local_hash, id);
}, function (error) {
var use_post;
if ((error instanceof jIO.util.jIOError) &&
(error.status_code === 404)) {
if (is_creation) {
// Remote document does not exists, create it following
// provided options
use_post = options.use_post;
} else {
// Remote document has been erased, put it to save
// modification
use_post = false;
}
return propagateModification(source, destination, doc,
local_hash, id,
{use_post: use_post});
}
throw error;
});
} }
}); });
} }
...@@ -350,6 +380,9 @@ ...@@ -350,6 +380,9 @@
if (!options.hasOwnProperty("use_post")) { if (!options.hasOwnProperty("use_post")) {
options.use_post = false; options.use_post = false;
} }
if (!options.hasOwnProperty("use_revert_post")) {
options.use_revert_post = false;
}
return queue return queue
.push(function () { .push(function () {
return RSVP.all([ return RSVP.all([
...@@ -412,7 +445,11 @@ ...@@ -412,7 +445,11 @@
for (key in signature_dict) { for (key in signature_dict) {
if (signature_dict.hasOwnProperty(key)) { if (signature_dict.hasOwnProperty(key)) {
if (!local_dict.hasOwnProperty(key)) { if (!local_dict.hasOwnProperty(key)) {
checkLocalDeletion(queue, destination, key, source); checkLocalDeletion(queue, destination, key, source,
options.conflict_force,
options.conflict_revert,
options.conflict_ignore,
options);
} }
} }
} }
...@@ -502,6 +539,7 @@ ...@@ -502,6 +539,7 @@
return pushStorage(context._remote_sub_storage, return pushStorage(context._remote_sub_storage,
context._local_sub_storage, { context._local_sub_storage, {
use_bulk_get: use_bulk_get, use_bulk_get: use_bulk_get,
use_revert_post: context._use_remote_post,
conflict_force: (context._conflict_handling === conflict_force: (context._conflict_handling ===
CONFLICT_KEEP_REMOTE), CONFLICT_KEEP_REMOTE),
conflict_revert: (context._conflict_handling === conflict_revert: (context._conflict_handling ===
......
test/jio.storage/replicatestorage.tests.js
View file @ d177be73
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