Commit ef27c6fd authored by Romain Courteaud's avatar Romain Courteaud

[fallbackstorage] allow to support browser without IndexedDB

parent 117e9b18
...@@ -132,6 +132,7 @@ ${JIOVERSION}: ${EXTERNALDIR}/URI.js \ ...@@ -132,6 +132,7 @@ ${JIOVERSION}: ${EXTERNALDIR}/URI.js \
${SRCDIR}/jio.js \ ${SRCDIR}/jio.js \
${EXTERNALDIR}/rusha.js \ ${EXTERNALDIR}/rusha.js \
${SRCDIR}/jio.storage/replicatestorage.js \ ${SRCDIR}/jio.storage/replicatestorage.js \
${SRCDIR}/jio.storage/fallbackstorage.js \
${SRCDIR}/jio.storage/shastorage.js \ ${SRCDIR}/jio.storage/shastorage.js \
${SRCDIR}/jio.storage/uuidstorage.js \ ${SRCDIR}/jio.storage/uuidstorage.js \
${SRCDIR}/jio.storage/memorystorage.js \ ${SRCDIR}/jio.storage/memorystorage.js \
...@@ -179,6 +180,7 @@ ${JIONODEVERSION}: ${SRCDIR}/node/jio-start.js \ ...@@ -179,6 +180,7 @@ ${JIONODEVERSION}: ${SRCDIR}/node/jio-start.js \
${SRCDIR}/jio.js \ ${SRCDIR}/jio.js \
${SRCDIR}/node/jio.js \ ${SRCDIR}/node/jio.js \
${SRCDIR}/jio.storage/replicatestorage.js \ ${SRCDIR}/jio.storage/replicatestorage.js \
${SRCDIR}/jio.storage/fallbackstorage.js \
${SRCDIR}/jio.storage/shastorage.js \ ${SRCDIR}/jio.storage/shastorage.js \
${SRCDIR}/jio.storage/uuidstorage.js \ ${SRCDIR}/jio.storage/uuidstorage.js \
${SRCDIR}/jio.storage/memorystorage.js \ ${SRCDIR}/jio.storage/memorystorage.js \
......
/*
* JIO extension for resource replication.
* Copyright (C) 2021 Nexedi SA
*
* This program is free software: you can Use, Study, Modify and Redistribute
* it under the terms of the GNU General Public License version 3, or (at your
* option) any later version, as published by the Free Software Foundation.
*
* You can also Link and Combine this program with other software covered by
* the terms of any of the Free Software licenses or any of the Open Source
* Initiative approved licenses and Convey the resulting work. Corresponding
* source of such a combination shall include the source code for all other
* software used.
*
* This program is distributed WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* See COPYING file for full licensing terms.
* See https://www.nexedi.com/licensing for rationale and options.
*/
/*jslint nomen: true*/
/*global jIO*/
(function (jIO) {
"use strict";
function FallbackStorage(spec) {
this._sub_storage = this._current_storage = jIO.createJIO(spec.sub_storage);
if (spec.hasOwnProperty('fallback_storage')) {
this._fallback_storage = jIO.createJIO(spec.fallback_storage);
this._checked = false;
} else {
this._checked = true;
}
}
var method_name_list = [
'get',
'put',
'post',
'remove',
'buildQuery',
'getAttachment',
'putAttachment',
'allAttachments',
'repair'
],
i;
function methodFallback(method_name) {
return function () {
var storage = this,
queue = storage._current_storage[method_name].apply(
storage._current_storage,
arguments
),
argument_list = arguments;
if (!storage._checked) {
queue
.push(function (result) {
storage._checked = true;
return result;
}, function (error) {
storage._checked = true;
if ((error instanceof jIO.util.jIOError) &&
(error.status_code === 500)) {
// If storage is not working, use fallback instead
storage._current_storage = storage._fallback_storage;
return storage._current_storage[method_name].apply(
storage._current_storage,
argument_list
);
}
throw error;
});
}
return queue;
};
}
for (i = 0; i < method_name_list.length; i += 1) {
FallbackStorage.prototype[method_name_list[i]] =
methodFallback(method_name_list[i]);
}
FallbackStorage.prototype.hasCapacity = function hasCapacity(name) {
return (this._sub_storage.hasCapacity(name) &&
this._fallback_storage.hasCapacity(name));
};
jIO.addStorage('fallback', FallbackStorage);
}(jIO));
This diff is collapsed.
...@@ -64,6 +64,7 @@ See https://www.nexedi.com/licensing for rationale and options. ...@@ -64,6 +64,7 @@ See https://www.nexedi.com/licensing for rationale and options.
<script src="jio.storage/replicatestorage_repairattachment.tests.js"></script> <script src="jio.storage/replicatestorage_repairattachment.tests.js"></script>
<script src="jio.storage/replicatestorage_fastrepair.tests.js"></script> <script src="jio.storage/replicatestorage_fastrepair.tests.js"></script>
<script src="jio.storage/replicatestorage_fastrepairattachment.tests.js"></script> <script src="jio.storage/replicatestorage_fastrepairattachment.tests.js"></script>
<script src="jio.storage/fallbackstorage.tests.js"></script>
<script src="jio.storage/shastorage.tests.js"></script> <script src="jio.storage/shastorage.tests.js"></script>
<script src="jio.storage/parserstorage.tests.js"></script> <script src="jio.storage/parserstorage.tests.js"></script>
......
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