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Commit 26ecee61 authored by Tristan Cavelier's avatar Tristan Cavelier
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synchro prototypes files removed

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src/jio.storage/synchro.js deleted 100644 → 0
View file @ b43cb6f5
/*
Synchronisation prototype
*/
var that = {};
var priv = {};
var global = {};
var GLOBAL = global;
var RESPONSES = [];
var storage = {};
var functions = {};
var todo = function (string) {
global.todo = global.todo || {};
if (!global.todo[string]) {
global.todo[string] = true;
console.log('TODO: ' + string);
}
};
global.objectItems = function (object) {
var array_of_couple = [], k;
for (k in object) {
if (object.hasOwnProperty(k)) {
array_of_couple.push([k, object[k]])
}
}
return array_of_couple;
};
global.clone = function (object) {
var tmp = JSON.stringify(object);
if (tmp === undefined) {
return undefined;
}
return JSON.parse(tmp);
};
that.addJob = function (method, storage_spec, doc, option, success, error) {
var r = RESPONSES.shift();
setTimeout(function () {
// if (doc._id) {
// // storage[doc._id] = doc;
// success(r);
// } else {
// // var doc = storage[docid];
// // if (doc) {
// // for (var k in r) {
// // doc[k] = r[k];
// // }
// // success(doc);
// // }
// success(r);
// }
console.log(method + " " + JSON.stringify(storage_spec) + " " + JSON.stringify(doc) + " " + JSON.stringify(option));
if (r.status) {
error(r);
} else {
success(r);
}
}, 100);
};
that.error = function (err) {
console.log("ERROR: " + JSON.stringify(err));
};
that.success = function (response) {
console.log("SUCCESS: " + JSON.stringify(response));
};
priv.sendToAll = function (method, doc, option, callback) {
var i;
for (i = 0; i < priv.storage_list.length; i += 1) {
priv.send(method, i, doc, option, callback);
}
};
priv.storage_list = ['revision', 'revision', 'revision'];
////////////////////////////////////////////////////////////////////////////////
// TOOLS
////////////////////////////////////////////////////////////////////////////////
priv.emptyFunction = function () {};
priv.arrayFilter = function (array_list, array_value) {
var i, j, add, newlist = [];
for (i = 0; i < array_list.length; i += 1) {
add = true;
for (j = 0; j < array_value.length; j += 1) {
if (array_list[i] === array_value[j]) {
add = false;
break;
}
}
if (add === true) {
newlist.push(array_list[i]);
}
}
return newlist;
};
priv.makeArrayIndexes = function (length) {
var i, newlist = [];
for (i = 0; i < length; i += 1) {
newlist.push(i);
}
return newlist;
};
////////////////////////////////////////////////////////////////////////////////
// CHECK CONSISTENCY
////////////////////////////////////////////////////////////////////////////////
that.check = function (command) {
priv.check(
command.cloneDoc(),
command.cloneOption(),
that.success,
that.error
);
};
that.repair = function (command) {
priv.repair(
command.cloneDoc(),
command.cloneOption(),
true,
that.success,
that.error
);
};
priv.check = function (doc, option, success, error) {
priv.repair(doc, option, false, success, error);
};
// Check pass only if:
// - all the substorages answer the requests
// - they respond exactly the same thing
// - consistency is correct
// Consistency is correct if:
// - it has a correct revision
// If answers differ, the good answer is the first one which is more returned
priv.repair = function (doc, option, repair, success, error) {
var i, callback, callbackWrapper, responses = {
"count": 0,
"list": [],
"stats": {}
};
success = success || priv.emptyFunction;
error = error || priv.emptyFunction;
responses.list.length = priv.storage_list.length;
callbackWrapper = function () {
callback.apply(callback, arguments);
};
callback = function (method, index, err, response) {
var items, i, count;
if (err) {
if (err.status === 404) {
// do nothing
} else {
// get document failed
callback = priv.emptyFunction;
error({
"status": 40,
"statusText": "Check Failed",
"error": "check_failed",
"message": "An error occured on the sub storage",
"reason": err.reason
});
return;
}
}
responses.count += 1;
// success to get the document
// keep the response in memory
responses.list[index] = JSON.stringify(response || null);
if (responses.count !== responses.list.length) {
// this is not the last response
return;
}
// this is the last response
// create stats with all the responses
for (i = 0; i < responses.count; i += 1) {
if (responses.stats[responses.list[i]] === undefined) {
responses.stats[responses.list[i]] = [];
}
responses.stats[responses.list[i]].push(i);
}
items = global.objectItems(responses.stats);
if (items.length === 1) {
// there is no difference between the responses, all is ok
success({
"ok": true,
"id": doc.id,
"rev": responses.list[0] !== "null" ? JSON.parse(responses.list[0])._rev : undefined
});
return;
}
// the response are not the similar
if (repair === false) {
// do not repair
error({
"status": 41,
"statusText": "Check Not Ok",
"error": "check_not_ok",
"message": "Some documents are different in the sub storages",
"reason": "Responses are different"
});
return;
}
// repair
priv.synchronize(responses, option, success, error);
};
// get the documents to check
priv.sendToAll("get", doc.id, {
"conflicts": true,
"revs": true,
"revs_info": true,
"rev": doc.rev
}, callbackWrapper);
};
////////////////////////////////////////////////////////////////////////////////
// SYNCHRO METHOD
////////////////////////////////////////////////////////////////////////////////
priv.send = function (method, index, doc, option, callback) {
var wrapped_callback_success, wrapped_callback_error, cloned_doc;
callback = callback || priv.emptyFunction;
wrapped_callback_success = function (response) {
callback(method, index, undefined, response);
};
wrapped_callback_error = function (err) {
callback(method, index, err, undefined);
};
that.addJob(
method,
priv.storage_list[index],
doc,
option,
wrapped_callback_success,
wrapped_callback_error
);
};
// responses
// { count
// list []
// stats { responseA: []
// responseB: [] }
// }
priv.synchronize = function (responses, option, success, error) {
var response, storage_list_indexes, functions = {};
storage_list_indexes = priv.makeArrayIndexes(priv.storage_list.length);
functions.callback_count = 0;
functions.callback_max = 0;
functions.callback = function (err, response) {
functions.callback_count += 1;
if (err) {
error(err);
functions.callback = priv.emptyFunction;
return;
}
if (functions.callback_max === functions.callback_count) {
success(response);
}
};
functions.callbackWrapper = function () {
functions.callback.apply(functions.callback, arguments);
};
functions.syncSuccess = function (response) {
functions.callbackWrapper(
undefined,
{"ok": response.ok, "id": "truc", "rev": response.rev}
);
};
functions.syncError = function (err) {
err.status = 43;
err.statusText = "Repair Failed";
err.error = "repair_failed";
err.message = "Impossible to repair";
functions.callbackWrapper(err, undefined);
};
for (response in responses.stats) {
if (responses.stats.hasOwnProperty(response)) {
var filtered_indexes = priv.arrayFilter(
storage_list_indexes,
responses.stats[response]
);
functions.callback_max += filtered_indexes.length;
priv.synchronizeStorages(
JSON.parse(response),
option,
filtered_indexes,
functions.syncSuccess,
functions.syncError
);
}
}
};
priv.synchronizeStorages = function (doc, option, storage_index_list,
success, error) {
var i, callback = function (method, index, err, response) {
if (err) {
error(err);
return;
}
success(response);
};
if (doc === null) {
return;
}
success = success || priv.emptyFunction;
error = error || priv.emptyFunction;
if (doc._revs === undefined) {
error({
"status": 43,
"statusText": "Fail To Repair",
"error": "fail_to_repair",
"message": "Impossible to repair this storage",
"reason": "The response has no revision history"
});
return;
}
for (i = 0; i < storage_index_list.length; i += 1) {
priv.send("put", storage_index_list[i], doc, option, callback);
}
if (option.synchronize_conflicting_versions !== false && doc._conflicts) {
for (i = 0; i < doc._conflicts.length; i += 1) {
var option_clone = global.clone(option);
option_clone.synchronize_conflicting_versions = false;
priv.repair({"id": "truc", "rev": doc._conflicts[i]}, option_clone, true);
}
}
};
////////////////////////////////////////////////////////////////////////////////
// Tests
////////////////////////////////////////////////////////////////////////////////
// RESPONSES.push({"_id": "truc", "_rev": "1-a", "_revs": {"start": 1, "ids": ["a"]}});
// RESPONSES.push({"_id": "truc", "_rev": "1-a", "_revs": {"start": 1, "ids": ["a"]}});
// //RESPONSES.push({"_id": "truc", "_rev": "1-a", "_revs": {"start": 1, "ids": ["a"]}});
// RESPONSES.push({"_id": "truc", "title": "autretruc", "_rev": "2-b", "_revs": {"start": 2, "ids": ["b","a"]}, "_conflicts": ["2-c"]});
// RESPONSES.push({"ok": true, "id": "truc", "rev": "1-a"});
// RESPONSES.push({"ok": true, "id": "truc", "rev": "2-b"});
// RESPONSES.push({"ok": true, "id": "truc", "rev": "2-b"});
// //RESPONSES.push({"status": 409, "statusText": "conflicts", "reason": "blue"});
// priv.repair({"id": "truc"}, true, {}, function (response) {
// console.log('--- ok');
// console.log(response);
// }, function (err) {
// console.log('--- err');
// console.log(err);
// });
RESPONSES.push({"status": 404, "reason": "missing"});
RESPONSES.push({"status": 404, "reason": "missing"});
//RESPONSES.push({"status": 404, "reason": "missing"});
RESPONSES.push({"_id": "truc", "title": "autretruc", "_rev": "2-b", "_revs": {"start": 2, "ids": ["b","a"]}, "_conflicts": ["2-c"]});
// RESPONSES.push({"ok": true, "id": "truc", "rev": "1-a"});
RESPONSES.push({"ok": true, "id": "truc", "rev": "2-b"});
RESPONSES.push({"ok": true, "id": "truc", "rev": "2-b"});
RESPONSES.push({"status": 404, "reason": "missing"});
RESPONSES.push({"status": 404, "reason": "missing"});
//RESPONSES.push({"status": 404, "reason": "missing"});
RESPONSES.push({"_id": "truc", "title": "autretruc", "_rev": "2-c", "_revs": {"start": 2, "ids": ["c","a"]}, "_conflicts": ["2-b"]});
// RESPONSES.push({"ok": true, "id": "truc", "rev": "1-a"});
RESPONSES.push({"ok": true, "id": "truc", "rev": "2-c"});
RESPONSES.push({"ok": true, "id": "truc", "rev": "2-c"});
//RESPONSES.push({"status": 409, "statusText": "conflicts", "reason": "blue"});
priv.repair({"id": "truc", "rev": "2-b"}, {}, true, function (response) {
console.log('--- ok');
console.log(response);
}, function (err) {
console.log('--- err');
console.log(err);
});
// ////////////////////////////////////////////////////////////////////////////////
// // SYNCHRO METHOD
// ////////////////////////////////////////////////////////////////////////////////
// priv.send = function (method, index, doc, option, callback) {
// var wrapped_callback_success, wrapped_callback_error, cloned_doc;
// callback = callback || function () {};
// wrapped_callback_success = function (response) {
// callback(method, index, undefined, response);
// };
// wrapped_callback_error = function (err) {
// callback(method, index, err, undefined);
// };
// cloned_doc = global.clone(doc);
// delete cloned_doc._revs;
// delete cloned_doc._rev;
// delete cloned_doc._revs_info;
// delete cloned_doc._revisions;
// that.addJob(
// method,
// priv.storage_list[index],
// cloned_doc,
// option,
// wrapped_callback_success,
// wrapped_callback_error
// );
// };
// priv.storage_list = ['revision', 'revision', 'revision'];
// priv.createSynchronizeObject = function () {
// var o = {
// "storages_revisions": [], // [ rev, rev, rev ]
// "revs_info_array": [], // [ revs_info, revs_info ]
// "attachments_array": [], // [
// "responses": {}
// };
// o.storages_revisions.length = priv.storage_list.length;
// o.revs_info_array.length = priv.storage_list.length;
// return o;
// };
// priv.forEachResponseSynchronizeStorages = function (synchronize_object,
// method, index, err,
// response) {
// var i;
// todo('replaced, manage err');
// console.log('Received: ' + JSON.stringify(response));
// console.log('From: ' + index);
// for (i = 0; i < synchronize_object.revs_info_array.length; i += 1) {
// if (synchronize_object.revs_info_array[i] !== undefined) {
// priv.synchronizeStorages(
// synchronize_object,
// response._id,
// i,
// index,
// response._revs_info
// );
// todo("get conflicts and synchro again");
// }
// }
// synchronize_object.revs_info_array[index] = response._revs_info;
// };
// priv.synchronizeStorages = function (synchronize_object, docid, index_a,
// index_b, revs_info_b) {
// var revs_info_a = synchronize_object.revs_info_array[index_a];
// console.log('synchro ' + index_a + ' <-> ' + index_b);
// sync = function (revs_info_src, revs_info_dest,
// source, destination) {
// var functions = {};
// functions.begin = function () {
// if (revs_info_src.length == 0) {
// // there is no more revision to check, exit
// return;
// }
// rev_info_src = revs_info_src.shift();
// rev_info_dest = '';
// if (revs_info_dest.length > 0) {
// // there is no more revisions on the destination
// rev_info_dest = revs_info_dest[0];
// }
// if (rev_info_src.rev === rev_info_dest.rev) {
// // file already exists in destination
// console.log(' ' + source + ' --> ' + destination +
// ' exists ' + rev_info_dest.rev);
// revs_info_dest.shift();
// sync(revs_info_src, revs_info_dest, source, destination);
// return;
// }
// if (synchronize_object.responses[rev_info_src.rev]) {
// // document is already loaded but not in destination
// functions.synchroDocumentFromCache();
// return;
// }
// if (!synchronize_object.responses[rev_info_src.rev]) {
// // if document is not loaded
// functions.getAndSynchoDocument();
// return;
// }
// };
// functions.synchroDocumentFromCache = function () {
// console.log(' cache --> ' + destination + ' sending ' +
// rev_info_dest.rev);
// priv.send(
// "put",
// destination,
// synchronize_object.responses[rev_info_src.rev],
// function (method, index, err, response) {
// todo('manage err');
// if (err) {
// return;
// }
// revs_info_src.shift();
// sync(revs_info_src, revs_info_dest, source, destination);
// }
// );
// };
// functions.getAndSynchoDocument = function () {
// console.log(' get <-- ' + source + ' ' + rev_info_src.rev);
// priv.send("get", source, docid, {
// "revs": true,
// "revs_info": true,
// "conflicts": true,
// "rev": rev_info_src.rev
// }, function (method, index, err, response) {
// todo('manage err');
// if (err) {
// return;
// }
// synchronize_object.responses[response._rev] = global.clone(response);
// functions.synchroDocumentFromCache();
// });
// };
// functions.begin();
// };
// sync(
// global.clone(revs_info_a),
// global.clone(revs_info_b),
// index_a,
// index_b
// );
// sync(
// global.clone(revs_info_b),
// global.clone(revs_info_a),
// index_b,
// index_a
// );
// };
// ////////////////////////////////////////////////////////////////////////////////
// // INTERNAL FUNCTIONS
// ////////////////////////////////////////////////////////////////////////////////
// functions.forEachResponse = function (method, index, err, response) {
// var synchronize_object = priv.createSynchronizeObject();
// synchronize_object.revs_info_array[index] = response._revs_info;
// todo("manage err");
// if (err) {
// return;
// }
// synchronize_object.responses[response._rev] = global.clone(response);
// todo('manage options');
// // remove conflicts, revs, revs_info only if necessary
// that.success(response);
// functions.forEachResponse = function (method, index, err, response) {
// priv.forEachResponseSynchronizeStorages(
// synchronize_object,
// method,
// index,
// err,
// response
// );
// };
// };
// functions.forEachResponseWrapper = function () {
// functions.forEachResponse.apply(functions.forEachResponse, arguments);
// };
// ////////////////////////////////////////////////////////////////////////////////
// // TESTS
// ////////////////////////////////////////////////////////////////////////////////
// global.response_revision = '1-rh1';
// global.response_title = 'YES';
// global.response_revs_info = [{"rev": "1-rh1", "status": "available"}];
// priv.send("get", 0, "mydoc", {
// "conflict": true, // to add
// "revs": true, // to add
// "revs_info": true, // to add
// "max_retry": 3 // don't care
// }, functions.forEachResponseWrapper);
// global.response_revision = '1-rh1';
// global.response_title = 'YES';
// global.response_revs_info = [{"rev": "1-rh1", "status": "available"}];
// priv.send("get", 1, "mydoc", {
// "conflict": true, // to add
// "revs": true, // to add
// "revs_info": true, // to add
// "max_retry": 3 // don't care
// }, functions.forEachResponseWrapper);
// global.response_revision = '1-rh2';
// global.response_title = 'No';
// global.response_revs_info = [{"rev": "1-rh2", "status": "available"}];
// global.response_conflicts = ['1-rh1']; // try with ['1-rh1', '2-rh3']
// priv.send("get", 2, "mydoc", {
// "conflict": true, // to add
// "revs": true, // to add
// "revs_info": true, // to add
// "max_retry": 3 // don't care
// }, functions.forEachResponseWrapper);
src/jio.storage/synchro2.js deleted 100644 → 0
View file @ b43cb6f5
var that = {};
var priv = {};
var RESPONSES = {"put":[],"get":[]};
var todo = function (string) {
global.todo = global.todo || {};
if (!global.todo[string]) {
global.todo[string] = true;
console.log('TODO: ' + string);
}
};
priv.clone = function (object) {
var tmp = JSON.stringify(object);
if (tmp === undefined) {
return undefined;
}
return JSON.parse(tmp);
};
that.addJob = function (method, storage_spec, doc, option, success, error) {
console.log(method + " "+ JSON.stringify(storage_spec) +
" " + JSON.stringify(doc) + " " + JSON.stringify(option));
var r = RESPONSES[method].shift();
setTimeout(function () {
if (r.ok === true) {
success(r);
} else {
error(r);
}
}, Math.floor(Math.random() * 500)); // {0..500}
};
priv.send = function (method, index, doc, option, callback) {
console.log("send " + method + " " +
JSON.stringify(priv.storage_list[index]) + " " +
JSON.stringify(doc) + " " + JSON.stringify(option));
var wrapped_callback_success, wrapped_callback_error;
callback = callback || priv.emptyFunction;
wrapped_callback_success = function (response) {
callback(method, index, undefined, response);
};
wrapped_callback_error = function (err) {
callback(method, index, err, undefined);
};
that.addJob(
method,
priv.storage_list[index],
doc,
option,
wrapped_callback_success,
wrapped_callback_error
);
};
priv.sendToAll = function (method, doc, option, callback) {
console.log("sendToAll " + method + " " + JSON.stringify(doc) + " " +
JSON.stringify(option));
var i;
for (i = 0; i < priv.storage_list.length; i += 1) {
priv.send(method, i, doc, option, callback);
}
};
priv.emptyFunction = function () {};
////////////////////////////////////////////////////////////////////////////////
// NEW
priv.replicateRevToDistantRev = function (revision, storage_index) {
throw {"name": "NotImplementedError", "message": "replicateRevToDistantRev"};
};
// Check pass only if:
// - all the substorages answer the requests
// - they respond exactly the same thing
// - consistency is correct
// Consistency is correct if:
// - it has a correct revision
// If answers differ, the good answer is the first one which is more returned
that.check = function (command) {
priv.check(
command.cloneDoc(),
command.cloneOption(),
that.success,
that.error
);
};
that.repair = function (command) {
priv.repair(
command.cloneDoc(),
command.cloneOption(),
true,
that.success,
that.error
);
};
priv.check = function (doc, option, success, error) {
priv.repair(doc, option, false, success, error);
};
priv.repair = function (doc, option, repair, callback) {
callback = callback || priv.emptyFunction;
option = option || {};
var begin = function () {
var param = {
"doc": doc,
"option": option,
"repair": repair,
"responses": {
"count": 0,
"list": [
// 0: response0
// 1: response1
// 2: response2
],
"stats": {
// responseA: [0, 1]
// responseB: [2]
},
"stats_items": [
// 0: [responseA, [0, 1]]
// 1: [responseB, [2]]
]
}
};
getAllDocuments(param);
},
getAllDocuments = function (param) {
var i, doc = priv.clone(param.doc), option = priv.clone(param.option);
option.conflicts = true;
option.revs = true;
option.revs_info = true;
for (i = 0; i < priv.storage_list.length; i += 1) {
doc._rev = priv.replicateRevToDistantRev(doc._rev, i);
priv.send("get", i, doc, option, dealResults(param));
}
},
dealResults = function (param) {
var deal_result_state = "ok";
return function (method, index, err, response) {
if (deal_result_state !== "ok") {
// deal result is in a wrong state, exit
return;
}
if (err) {
if (err.status !== 404) {
// get document failed, exit
deal_result_state = "error";
callback({
"status": 40,
"statusText": "Check Failed",
"error": "check_failed",
"message": "An error occured on the sub storage",
"reason": err.reason
});
return;
}
}
// success to get the document
// add the response in memory
param.responses.count += 1;
param.responses.list[index] = response;
param.responses.revs[response._rev] = response;
if (param.responses.count !== param.responses.list.length) {
// this is not the last response, wait for the next response
return;
}
// this is now the last response
makeResponsesStats(param.responses);
if (param.responses.stats_items.length === 1) {
// the responses are equals!
callback(undefined, {
"ok": true,
"id": param.doc._id,
"rev": priv.distantRevToReplicateRev(
typeof param.responses.list[0] === "object" ?
param.responses.list[0]._rev : undefined
)
});
return;
}
// the responses are different
if (param.repair === false) {
// do not repair
callback({
"status": 41,
"statusText": "Check Not Ok",
"error": "check_not_ok",
"message": "Some documents are different in the sub storages",
"reason": "Storage contents differ"
});
return;
}
// repair
synchronizeAllSubStorage(param);
};
},
makeResponsesStats = function (responses) {
var i;
for (i = 0; i < responses.count; i += 1) {
var str_response = JSON.stringify(responses.list[i]);
if (responses.stats[str_response] === undefined) {
responses.stats[str_response] = [];
responses.stats_items.push(
str_response,
responses.stats[str_responses]
);
}
responses.stats[str_response].push(i);
}
},
synchronizeAllSubStorage = function (param) {
var i, j, len = param.responses.stats_items.length;
for (i = 0; i < len; i += 1) {
// browsing responses
for (j = 0; j < len; j += 1) {
// browsing storage list
if (i !== j) {
synchronizeAllSubStorage(
param,
param.responses.stats_items[i][0],
param.responses.stats_items[j][1]
);
}
}
}
},
synchronizeResponseToSubStorage = function (param, response, storage_list) {
throw {"name": "NotImplementedError", "message": "synchronizeResponseToSubStorage"};
};
begin();
};
////////////////////////////////////////////////////////////////////////////////
// TEST
RESPONSES.get.push({"_id": "doc1", "_rev": "2-222"});
priv.storage_list = ["revision1"];
priv.repair({"_id": "doc1", "_rev": "2-2"}, {}, function (err, response) {
console.log("END");
console.log(err || response);
});
// priv.storage_list = ["revision1", "revision2", "revision3"];
// priv.repair({"_id": "doc1", "_rev": "2-222"}, function (err, response) {
// console.log("END");
// console.log(err || response);
// });
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