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Create processUncompressedUpdates method
This commit is contained in:
James Allen
parent
34d3847fe4
commit
f33a3bde3e
2 changed files with 105 additions and 70 deletions
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@ -1,4 +1,5 @@
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MongoManager = require "./MongoManager"
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RedisManager = require "./RedisManager"
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UpdateCompressor = require "./UpdateCompressor"
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logger = require "logger-sharelatex"
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@ -26,9 +27,15 @@ module.exports = HistoryManager =
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logger.log doc_id: doc_id, rawUpdatesLength: length, compressedUpdatesLength: compressedUpdates.length, "compressed doc updates"
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callback()
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REDIS_READ_BATCH_SIZE: 100
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processUncompressedUpdates: (doc_id, callback = (error) ->) ->
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# Get lock - here or elsewhere?
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# Get batch from Redis left hand side (oldest)
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# pass batch to compressAndSaveRawUpdates
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# Delete batch from redis
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# release lock
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RedisManager.getOldestRawUpdates doc_id, HistoryManager.REDIS_READ_BATCH_SIZE, (error, rawUpdates) ->
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return callback(error) if error?
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HistoryManager.compressAndSaveRawUpdates doc_id, rawUpdates, (error) ->
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return callback(error) if error?
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RedisManager.deleteOldestRawUpdates doc_id, HistoryManager.REDIS_READ_BATCH_SIZE, (error) ->
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return callback(error) if error?
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callback()
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processUncompressUpdatesWithLock: (doc_id, callback = (error) ->) ->
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@ -10,63 +10,33 @@ describe "HistoryManager", ->
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@HistoryManager = SandboxedModule.require modulePath, requires:
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"./UpdateCompressor": @UpdateCompressor = {}
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"./MongoManager" : @MongoManager = {}
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"./RedisManager" : @RedisManager = {}
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"logger-sharelatex": { log: sinon.stub() }
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@doc_id = "doc-id-123"
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@callback = sinon.stub()
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describe "when there are no raw ops", ->
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beforeEach ->
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@MongoManager.popLastCompressedUpdate = sinon.stub()
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@MongoManager.insertCompressedUpdates = sinon.stub()
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@HistoryManager.compressAndSaveRawUpdates @doc_id, [], @callback
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describe "compressAndSaveRawUpdates", ->
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describe "when there are no raw ops", ->
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beforeEach ->
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@MongoManager.popLastCompressedUpdate = sinon.stub()
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@MongoManager.insertCompressedUpdates = sinon.stub()
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@HistoryManager.compressAndSaveRawUpdates @doc_id, [], @callback
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it "should not need to access the database", ->
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@MongoManager.popLastCompressedUpdate.called.should.equal false
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@MongoManager.insertCompressedUpdates.called.should.equal false
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it "should not need to access the database", ->
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@MongoManager.popLastCompressedUpdate.called.should.equal false
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@MongoManager.insertCompressedUpdates.called.should.equal false
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it "should call the callback", ->
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@callback.called.should.equal true
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it "should call the callback", ->
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@callback.called.should.equal true
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describe "when there is no compressed history to begin with", ->
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beforeEach ->
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@rawUpdates = [{ v: 12, op: "mock-op-12" }, { v: 13, op: "mock-op-13" }]
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@compressedUpdates = { v: 13, op: "compressed-op-12" }
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@MongoManager.popLastCompressedUpdate = sinon.stub().callsArgWith(1, null, null)
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@MongoManager.insertCompressedUpdates = sinon.stub().callsArg(2)
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@UpdateCompressor.compressRawUpdates = sinon.stub().returns(@compressedUpdates)
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@HistoryManager.compressAndSaveRawUpdates @doc_id, @rawUpdates, @callback
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it "should try to pop the last compressed op", ->
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@MongoManager.popLastCompressedUpdate
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.calledWith(@doc_id)
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.should.equal true
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it "should compress the raw ops", ->
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@UpdateCompressor.compressRawUpdates
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.calledWith(null, @rawUpdates)
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.should.equal true
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it "should save the compressed ops", ->
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@MongoManager.insertCompressedUpdates
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.calledWith(@doc_id, @compressedUpdates)
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.should.equal true
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it "should call the callback", ->
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@callback.called.should.equal true
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describe "when the raw ops need appending to existing history", ->
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beforeEach ->
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@lastCompressedUpdate = { v: 11, op: "compressed-op-11" }
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@compressedUpdates = { v: 13, op: "compressed-op-12" }
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@MongoManager.popLastCompressedUpdate = sinon.stub().callsArgWith(1, null, @lastCompressedUpdate)
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@MongoManager.insertCompressedUpdates = sinon.stub().callsArg(2)
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@UpdateCompressor.compressRawUpdates = sinon.stub().returns(@compressedUpdates)
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describe "when the raw ops start where the existing history ends", ->
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describe "when there is no compressed history to begin with", ->
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beforeEach ->
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@rawUpdates = [{ v: 12, op: "mock-op-12" }, { v: 13, op: "mock-op-13" }]
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@compressedUpdates = { v: 13, op: "compressed-op-12" }
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@MongoManager.popLastCompressedUpdate = sinon.stub().callsArgWith(1, null, null)
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@MongoManager.insertCompressedUpdates = sinon.stub().callsArg(2)
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@UpdateCompressor.compressRawUpdates = sinon.stub().returns(@compressedUpdates)
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@HistoryManager.compressAndSaveRawUpdates @doc_id, @rawUpdates, @callback
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it "should try to pop the last compressed op", ->
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@ -74,9 +44,9 @@ describe "HistoryManager", ->
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.calledWith(@doc_id)
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.should.equal true
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it "should compress the last compressed op and the raw ops", ->
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it "should compress the raw ops", ->
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@UpdateCompressor.compressRawUpdates
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.calledWith(@lastCompressedUpdate, @rawUpdates)
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.calledWith(null, @rawUpdates)
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.should.equal true
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it "should save the compressed ops", ->
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@ -87,25 +57,83 @@ describe "HistoryManager", ->
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it "should call the callback", ->
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@callback.called.should.equal true
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describe "when some raw ops are passed that have already been compressed", ->
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describe "when the raw ops need appending to existing history", ->
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beforeEach ->
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@rawUpdates = [{ v: 10, op: "mock-op-10" }, { v: 11, op: "mock-op-11"}, { v: 12, op: "mock-op-12" }, { v: 13, op: "mock-op-13" }]
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@lastCompressedUpdate = { v: 11, op: "compressed-op-11" }
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@compressedUpdates = { v: 13, op: "compressed-op-12" }
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@HistoryManager.compressAndSaveRawUpdates @doc_id, @rawUpdates, @callback
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@MongoManager.popLastCompressedUpdate = sinon.stub().callsArgWith(1, null, @lastCompressedUpdate)
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@MongoManager.insertCompressedUpdates = sinon.stub().callsArg(2)
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@UpdateCompressor.compressRawUpdates = sinon.stub().returns(@compressedUpdates)
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it "should only compress the more recent raw ops", ->
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@UpdateCompressor.compressRawUpdates
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.calledWith(@lastCompressedUpdate, @rawUpdates.slice(-2))
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.should.equal true
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describe "when the raw ops start where the existing history ends", ->
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beforeEach ->
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@rawUpdates = [{ v: 12, op: "mock-op-12" }, { v: 13, op: "mock-op-13" }]
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@HistoryManager.compressAndSaveRawUpdates @doc_id, @rawUpdates, @callback
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describe "when the raw ops do not follow from the last compressed op version", ->
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beforeEach ->
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@rawUpdates = [{ v: 13, op: "mock-op-13" }]
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@HistoryManager.compressAndSaveRawUpdates @doc_id, @rawUpdates, @callback
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it "should try to pop the last compressed op", ->
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@MongoManager.popLastCompressedUpdate
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.calledWith(@doc_id)
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.should.equal true
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it "should compress the last compressed op and the raw ops", ->
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@UpdateCompressor.compressRawUpdates
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.calledWith(@lastCompressedUpdate, @rawUpdates)
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.should.equal true
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it "should save the compressed ops", ->
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@MongoManager.insertCompressedUpdates
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.calledWith(@doc_id, @compressedUpdates)
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.should.equal true
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it "should call the callback with an error", ->
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@callback
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.calledWith(new Error("Tried to apply raw op at version 13 to last compressed update with version 11"))
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.should.equal true
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it "should call the callback", ->
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@callback.called.should.equal true
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describe "when some raw ops are passed that have already been compressed", ->
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beforeEach ->
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@rawUpdates = [{ v: 10, op: "mock-op-10" }, { v: 11, op: "mock-op-11"}, { v: 12, op: "mock-op-12" }, { v: 13, op: "mock-op-13" }]
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@HistoryManager.compressAndSaveRawUpdates @doc_id, @rawUpdates, @callback
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it "should only compress the more recent raw ops", ->
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@UpdateCompressor.compressRawUpdates
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.calledWith(@lastCompressedUpdate, @rawUpdates.slice(-2))
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.should.equal true
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describe "when the raw ops do not follow from the last compressed op version", ->
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beforeEach ->
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@rawUpdates = [{ v: 13, op: "mock-op-13" }]
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@HistoryManager.compressAndSaveRawUpdates @doc_id, @rawUpdates, @callback
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it "should call the callback with an error", ->
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@callback
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.calledWith(new Error("Tried to apply raw op at version 13 to last compressed update with version 11"))
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.should.equal true
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describe "processUncompressedUpdates", ->
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beforeEach ->
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@updates = ["mock-update"]
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@RedisManager.getOldestRawUpdates = sinon.stub().callsArgWith(2, null, @updates)
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@HistoryManager.compressAndSaveRawUpdates = sinon.stub().callsArgWith(2)
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@RedisManager.deleteOldestRawUpdates = sinon.stub().callsArg(2)
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@HistoryManager.processUncompressedUpdates @doc_id, @callback
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it "should get the oldest updates", ->
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@RedisManager.getOldestRawUpdates
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.calledWith(@doc_id, @HistoryManager.REDIS_READ_BATCH_SIZE)
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.should.equal true
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it "should compress and save the updates", ->
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@HistoryManager.compressAndSaveRawUpdates
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.calledWith(@doc_id, @updates)
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.should.equal true
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it "should delete the batch of uncompressed updates that was just processed", ->
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@RedisManager.deleteOldestRawUpdates
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.calledWith(@doc_id, @HistoryManager.REDIS_READ_BATCH_SIZE)
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.should.equal true
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it "should call the callback", ->
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@callback.called.should.equal true
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