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* Lifecycle Manager Session
*
* Copyright 2016 Raising the Floor - International
*
* Licensed under the New BSD license. You may not use this file except in
* compliance with this License.
*
* You may obtain a copy of the License at
* https://github.com/GPII/universal/blob/master/LICENSE.txt
*/
"use strict";
var fluid = fluid || require("infusion");
var gpii = fluid.registerNamespace("gpii");
(function () {
/** Mediate between the dynamic collection of session components and the lifecycleManager by maintaining an index
* named "sessionIndex" mapping userTokens onto session member names
*/
fluid.defaults("gpii.lifecycleManager.sessionIndexer", {
gradeNames: "gpii.indexedDynamicComponent",
components: {
dynamicIndexTarget: "{gpii.lifecycleManager}"
},
dynamicIndexTargetPath: "sessionIndex",
dynamicIndexKeyPath: "options.userToken"
});
/** Mediate between updates to the session component's original snapshot and the external `onSessionSnapshotUpdate` fired by the
* LifecycleManager (principally to the journaller)
*/
fluid.defaults("gpii.lifecycleManager.sessionSnapshotUpdater", {
gradeNames: "fluid.component",
modelListeners: {
"originalSettings": {
excludeSource: "init",
func: "{gpii.lifecycleManager}.events.onSessionSnapshotUpdate.fire",
args: ["{gpii.lifecycleManager}", "{that}", "{change}.value"]
}
}
});
/** One dynamic component of this type is constructed for each active (local) session on the LifecycleManager.
* In practice we only support one of these at a time - in future we may support sessions bound to multiple users
* simultaneously or multiple simultaneous sessions.
*/
fluid.defaults("gpii.lifecycleManager.session", {
gradeNames: ["fluid.modelComponent", "gpii.lifecycleManager.sessionIndexer"],
model: {
actionResults: {},
originalSettings: {},
appliedSolutions: {}
},
members: {
createTime: "@expand:Date.now()",
// TODO: Refactor this into some more satisfactory future pattern - some kind of lightweight version of "transforming promise chain"
localFetcher: "@expand:gpii.lifecycleManager.computeLocalFetcher({that}, {that}.actionResultsFetcher)"
},
invokers: {
actionResultsFetcher: "gpii.lifecycleManager.actionResultsFetcher({that}, {arguments}.0)",
localResolver: "gpii.lifecycleManager.localResolver({gpii.lifecycleManager}, {that}, {arguments}.0)"
}
});
/** A standard session corresponding to a standard user logon
*/
fluid.defaults("gpii.lifecycleManager.userSession", {
gradeNames: ["gpii.lifecycleManager.session", "gpii.lifecycleManager.sessionSnapshotUpdater"]
});
/** A special session type corresponding to a "restore" action by the journaller
*/
fluid.defaults("gpii.lifecycleManager.restoreSession", {
gradeNames: "gpii.lifecycleManager.session"
});
gpii.lifecycleManager.actionResultsFetcher = function (session, parsed) {
var result = session.model.actionResults[parsed.context];
return fluid.get(result, parsed.path);
};
gpii.lifecycleManager.localResolver = function (lifecycleManager, session, material) {
return lifecycleManager.variableResolver.resolve(material, session.localFetcher);
};
gpii.lifecycleManager.computeLocalFetcher = function (session, actionResultsFetcher) {
// let the user's token as well as any named action results accumulated
// to date be resolvable for any future action
// TODO: This is an opportunistic hack based on the existing 2-arg gpii.combineFetchers. Needs to be
// generalised
return gpii.combineFetchers(
gpii.resolversToFetcher({userToken: session.options.userToken}),
actionResultsFetcher);
};
})();
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