mirror of
https://github.com/overleaf/overleaf.git
synced 2024-11-07 20:31:06 -05:00
combine the resource state and resource list
to prevent them getting out of sync
This commit is contained in:
parent
5b33129138
commit
3d1c3a1d27
4 changed files with 26 additions and 61 deletions
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@ -1,25 +0,0 @@
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Path = require "path"
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fs = require "fs"
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logger = require "logger-sharelatex"
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settings = require("settings-sharelatex")
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SafeReader = require "./SafeReader"
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module.exports = ResourceListManager =
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# This file is a list of the input files for the project, one per
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# line, used to identify output files (i.e. files not on this list)
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# when the incoming request is incremental.
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RESOURCE_LIST_FILE: ".project-resource-list"
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saveResourceList: (resources, basePath, callback = (error) ->) ->
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resourceListFile = Path.join(basePath, @RESOURCE_LIST_FILE)
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resourceList = (resource.path for resource in resources)
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fs.writeFile resourceListFile, resourceList.join("\n"), callback
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loadResourceList: (basePath, callback = (error) ->) ->
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resourceListFile = Path.join(basePath, @RESOURCE_LIST_FILE)
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# limit file to 128K, compile directory is user accessible
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SafeReader.readFile resourceListFile, 128*1024, 'utf8', (err, resourceList) ->
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return callback(err) if err?
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resources = ({path: path} for path in resourceList?.toString()?.split("\n") or [])
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callback(null, resources)
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@ -11,10 +11,11 @@ module.exports = ResourceStateManager =
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# incremental update to be allowed.
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#
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# The initial value is passed in and stored on a full
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# compile.
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# compile, along with the list of resources..
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#
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# Subsequent incremental compiles must come with the same value - if
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# not they will be rejected with a 409 Conflict response.
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# not they will be rejected with a 409 Conflict response. The
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# previous list of resources is returned.
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#
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# An incremental compile can only update existing files with new
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# content. The sync state identifier must change if any docs or
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@ -22,7 +23,7 @@ module.exports = ResourceStateManager =
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SYNC_STATE_FILE: ".project-sync-state"
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saveProjectStateHash: (state, basePath, callback) ->
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saveProjectStateHash: (state, resources, basePath, callback = (error) ->) ->
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stateFile = Path.join(basePath, @SYNC_STATE_FILE)
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if not state? # remove the file if no state passed in
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logger.log state:state, basePath:basePath, "clearing sync state"
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@ -33,14 +34,18 @@ module.exports = ResourceStateManager =
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return callback()
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else
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logger.log state:state, basePath:basePath, "writing sync state"
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fs.writeFile stateFile, state, {encoding: 'ascii'}, callback
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resourceList = (resource.path for resource in resources)
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fs.writeFile stateFile, [resourceList..., "stateHash:#{state}"].join("\n"), callback
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checkProjectStateHashMatches: (state, basePath, callback) ->
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checkProjectStateHashMatches: (state, basePath, callback = (error, resources) ->) ->
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stateFile = Path.join(basePath, @SYNC_STATE_FILE)
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SafeReader.readFile stateFile, 64, 'ascii', (err, oldState) ->
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SafeReader.readFile stateFile, 128*1024, 'utf8', (err, result) ->
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return callback(err) if err?
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logger.log state:state, oldState: oldState, basePath:basePath, stateMatches: !(state isnt oldState), "checking sync state"
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if state isnt oldState
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[resourceList..., oldState] = result?.toString()?.split("\n") or []
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newState = "stateHash:#{state}"
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logger.log state:state, oldState: oldState, basePath:basePath, stateMatches: (newState is oldState), "checking sync state"
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if newState isnt oldState
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return callback new Errors.FilesOutOfSyncError("invalid state for incremental update")
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else
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callback(null)
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resources = ({path: path} for path in resourceList)
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callback(null, resources)
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@ -5,7 +5,6 @@ async = require "async"
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mkdirp = require "mkdirp"
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OutputFileFinder = require "./OutputFileFinder"
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ResourceStateManager = require "./ResourceStateManager"
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ResourceListManager = require "./ResourceListManager"
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Metrics = require "./Metrics"
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logger = require "logger-sharelatex"
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settings = require("settings-sharelatex")
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@ -17,24 +16,20 @@ module.exports = ResourceWriter =
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syncResourcesToDisk: (request, basePath, callback = (error, resourceList) ->) ->
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if request.syncType is "incremental"
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logger.log project_id: request.project_id, user_id: request.user_id, "incremental sync"
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ResourceStateManager.checkProjectStateHashMatches request.syncState, basePath, (error) ->
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ResourceStateManager.checkProjectStateHashMatches request.syncState, basePath, (error, resourceList) ->
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return callback(error) if error?
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ResourceListManager.loadResourceList basePath, (error, resourceList) ->
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ResourceWriter._removeExtraneousFiles resourceList, basePath, (error) =>
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return callback(error) if error?
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ResourceWriter._removeExtraneousFiles resourceList, basePath, (error) =>
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ResourceWriter.saveIncrementalResourcesToDisk request.project_id, request.resources, basePath, (error) ->
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return callback(error) if error?
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ResourceWriter.saveIncrementalResourcesToDisk request.project_id, request.resources, basePath, (error) ->
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return callback(error) if error?
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callback(null, resourceList)
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callback(null, resourceList)
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else
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logger.log project_id: request.project_id, user_id: request.user_id, "full sync"
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@saveAllResourcesToDisk request.project_id, request.resources, basePath, (error) ->
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return callback(error) if error?
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ResourceStateManager.saveProjectStateHash request.syncState, basePath, (error) ->
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ResourceStateManager.saveProjectStateHash request.syncState, request.resources, basePath, (error) ->
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return callback(error) if error?
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ResourceListManager.saveResourceList request.resources, basePath, (error) =>
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return callback(error) if error?
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callback(null, request.resources)
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callback(null, request.resources)
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saveIncrementalResourcesToDisk: (project_id, resources, basePath, callback = (error) ->) ->
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@_createDirectory basePath, (error) =>
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@ -81,7 +76,7 @@ module.exports = ResourceWriter =
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should_delete = true
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if path.match(/^output\./) or path.match(/\.aux$/) or path.match(/^cache\//) # knitr cache
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should_delete = false
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if path in ['.project-resource-list', '.project-sync-state']
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if path == '.project-sync-state'
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should_delete = false
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if path == "output.pdf" or path == "output.dvi" or path == "output.log" or path == "output.xdv"
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should_delete = true
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@ -10,7 +10,6 @@ describe "ResourceWriter", ->
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"fs": @fs =
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mkdir: sinon.stub().callsArg(1)
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unlink: sinon.stub().callsArg(1)
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"./ResourceListManager": @ResourceListManager = {}
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"./ResourceStateManager": @ResourceStateManager = {}
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"wrench": @wrench = {}
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"./UrlCache" : @UrlCache = {}
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@ -34,9 +33,7 @@ describe "ResourceWriter", ->
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@ResourceWriter._writeResourceToDisk = sinon.stub().callsArg(3)
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@ResourceWriter._removeExtraneousFiles = sinon.stub().callsArg(2)
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@ResourceStateManager.checkProjectStateHashMatches = sinon.stub().callsArg(2)
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@ResourceStateManager.saveProjectStateHash = sinon.stub().callsArg(2)
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@ResourceListManager.saveResourceList = sinon.stub().callsArg(2)
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@ResourceListManager.loadResourceList = sinon.stub().callsArg(1)
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@ResourceStateManager.saveProjectStateHash = sinon.stub().callsArg(3)
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@ResourceWriter.syncResourcesToDisk({
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project_id: @project_id
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syncState: @syncState = "0123456789abcdef"
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@ -54,14 +51,9 @@ describe "ResourceWriter", ->
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.calledWith(@project_id, resource, @basePath)
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.should.equal true
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it "should store the sync state", ->
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it "should store the sync state and resource list", ->
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@ResourceStateManager.saveProjectStateHash
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.calledWith(@syncState, @basePath)
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.should.equal true
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it "should save the resource list", ->
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@ResourceListManager.saveResourceList
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.calledWith(@resources, @basePath)
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.calledWith(@syncState, @resources, @basePath)
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.should.equal true
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it "should call the callback", ->
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@ -74,10 +66,8 @@ describe "ResourceWriter", ->
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]
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@ResourceWriter._writeResourceToDisk = sinon.stub().callsArg(3)
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@ResourceWriter._removeExtraneousFiles = sinon.stub().callsArg(2)
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@ResourceStateManager.checkProjectStateHashMatches = sinon.stub().callsArg(2)
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@ResourceStateManager.saveProjectStateHash = sinon.stub().callsArg(2)
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@ResourceListManager.saveResourceList = sinon.stub().callsArg(2)
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@ResourceListManager.loadResourceList = sinon.stub().callsArgWith(1, null, @resources)
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@ResourceStateManager.checkProjectStateHashMatches = sinon.stub().callsArgWith(2, null, @resources)
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@ResourceStateManager.saveProjectStateHash = sinon.stub().callsArg(3)
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@ResourceWriter.syncResourcesToDisk({
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project_id: @project_id,
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syncType: "incremental",
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