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https://github.com/Foundry376/Mailspring.git
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a14a5212ac
Summary:
Until now, we've been hiding transactions beneath the surface. When you call persistModel, you're implicitly creating a transaction.
You could explicitly create them with `atomically`..., but there were several critical problems that are fixed in this diff:
- Calling persistModel / unpersistModel within a transaction could cause the DatabaseStore to trigger. This could result in other parts of the app making queries /during/
the transaction, potentially before the COMMIT occurred and saved the changes. The new, explicit inTransaction syntax holds all changes until after COMMIT and then triggers.
- Calling atomically and then calling persistModel inside that resulted in us having to check whether a transaction was present and was gross.
- Many parts of the code ran extensive logic inside a promise chained within `atomically`:
BAD:
```
DatabaseStore.atomically =>
DatabaseStore.persistModel(draft) =>
GoMakeANetworkRequestThatReturnsAPromise
```
OVERWHELMINGLY BETTER:
```
DatabaseStore.inTransaction (t) =>
t.persistModel(draft)
.then =>
GoMakeANetworkRequestThatReturnsAPromise
```
Having explicit transactions also puts us on equal footing with Sequelize and other ORMs. Note that you /have/ to call DatabaseStore.inTransaction (t) =>. There is no other way to access the methods that let you alter the database. :-)
Other changes:
- This diff removes Message.labels and the Message-Labels table. We weren't using Message-level labels anywhere, and the table could grow very large.
- This diff changes the page size during initial sync from 250 => 200 in an effort to make transactions a bit faster.
Test Plan: Run tests!
Reviewers: juan, evan
Reviewed By: juan, evan
Differential Revision: https://phab.nylas.com/D2353
95 lines
3 KiB
CoffeeScript
95 lines
3 KiB
CoffeeScript
_ = require 'underscore'
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{NylasAPI,
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Event,
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Actions,
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APIError,
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EventRSVPTask,
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DatabaseStore,
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DatabaseTransaction,
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AccountStore} = require 'nylas-exports'
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describe "EventRSVPTask", ->
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beforeEach ->
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spyOn(DatabaseStore, 'find').andCallFake => Promise.resolve(@event)
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spyOn(DatabaseTransaction.prototype, '_query').andCallFake -> Promise.resolve([])
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spyOn(DatabaseTransaction.prototype, 'persistModel').andCallFake -> Promise.resolve()
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@myName = "Ben Tester"
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@myEmail = "tester@nylas.com"
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@event = new Event
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id: '12233AEDF5'
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accountId: TEST_ACCOUNT_ID
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title: 'Meeting with Ben Bitdiddle'
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description: ''
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location: ''
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when:
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end_time: 1408123800
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start_time: 1408120200
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start: 1408120200
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end: 1408123800
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participants: [
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{"name": "Ben Bitdiddle",
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"email": "ben@bitdiddle.com",
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"status": "yes"},
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{"name": @myName,
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"email": @myEmail,
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"status": 'noreply'}
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]
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@task = new EventRSVPTask(@event, "no")
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describe "performLocal", ->
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it "should mark our status as no", ->
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@task.performLocal()
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advanceClock()
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expect(@event.participants[1].status).toBe "no"
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it "should trigger an action to persist the change", ->
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@task.performLocal()
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advanceClock()
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expect(DatabaseTransaction.prototype.persistModel).toHaveBeenCalled()
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describe "performRemote", ->
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it "should make the POST request to the message endpoint", ->
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spyOn(NylasAPI, 'makeRequest').andCallFake => new Promise (resolve,reject) ->
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@task.performRemote()
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options = NylasAPI.makeRequest.mostRecentCall.args[0]
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expect(options.path).toBe("/send-rsvp")
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expect(options.method).toBe('POST')
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expect(options.accountId).toBe(@event.accountId)
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expect(options.body.event_id).toBe(@event.id)
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expect(options.body.status).toBe("no")
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describe "when the remote API request fails", ->
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beforeEach ->
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spyOn(NylasAPI, 'makeRequest').andCallFake -> Promise.reject(new APIError(body: '', statusCode: 400))
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it "should not be marked with the status", ->
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@event = new Event
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id: '12233AEDF5'
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title: 'Meeting with Ben Bitdiddle'
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description: ''
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location: ''
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when:
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end_time: 1408123800
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start_time: 1408120200
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start: 1408120200
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end: 1408123800
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participants: [
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{"name": "Ben Bitdiddle",
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"email": "ben@bitdiddle.com",
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"status": "yes"},
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{"name": @myName,
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"email": @myEmail,
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"status": 'noreply'}
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]
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@task = new EventRSVPTask(@event, "no")
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@task.performLocal()
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@task.performRemote()
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advanceClock()
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expect(@event.participants[1].status).toBe "noreply"
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it "should trigger an action to persist the change", ->
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@task.performLocal()
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@task.performRemote()
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advanceClock()
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expect(DatabaseTransaction.prototype.persistModel).toHaveBeenCalled()
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