forked from rojo-rbx/rojo
Start rewriting plugin on top of new sync protocol
This commit is contained in:
Lucien Greathouse
@@ -1,152 +1,133 @@
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local Promise = require(script.Parent.Parent.Promise)
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local Http = require(script.Parent.Parent.Http)
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local Promise = require(script.Parent.Parent.Promise)
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local Config = require(script.Parent.Config)
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local Version = require(script.Parent.Version)
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local Types = require(script.Parent.Types)
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local Version = require(script.Parent.Version)
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local validateApiInfo = Types.ifEnabled(Types.ApiInfoResponse)
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local validateApiRead = Types.ifEnabled(Types.ApiReadResponse)
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local validateApiSubscribe = Types.ifEnabled(Types.ApiSubscribeResponse)
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local ApiContext = {}
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ApiContext.__index = ApiContext
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-- TODO: Audit cases of errors and create enum values for each of them.
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ApiContext.Error = {
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ServerIdMismatch = "ServerIdMismatch",
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-- The server gave an unexpected 400-category error, which may be the
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-- client's fault.
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ClientError = "ClientError",
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-- The server gave an unexpected 500-category error, which may be the
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-- server's fault.
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ServerError = "ServerError",
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}
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setmetatable(ApiContext.Error, {
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__index = function(_, key)
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error("Invalid ApiContext.Error name " .. key, 2)
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end
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})
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local function rejectFailedRequests(response)
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if response.code >= 400 then
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if response.code < 500 then
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return Promise.reject(ApiContext.Error.ClientError)
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else
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return Promise.reject(ApiContext.Error.ServerError)
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end
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-- TODO: Nicer error types for responses, using response JSON if valid.
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return Promise.reject(tostring(response.code))
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end
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return response
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end
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local function rejectWrongProtocolVersion(infoResponseBody)
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if infoResponseBody.protocolVersion ~= Config.protocolVersion then
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local message = (
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"Found a Rojo dev server, but it's using a different protocol version, and is incompatible." ..
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"\nMake sure you have matching versions of both the Rojo plugin and server!" ..
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"\n\nYour client is version %s, with protocol version %s. It expects server version %s." ..
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"\nYour server is version %s, with protocol version %s." ..
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"\n\nGo to https://github.com/rojo-rbx/rojo for more details."
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):format(
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Version.display(Config.version), Config.protocolVersion,
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Config.expectedServerVersionString,
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infoResponseBody.serverVersion, infoResponseBody.protocolVersion
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)
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return Promise.reject(message)
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end
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return Promise.resolve(infoResponseBody)
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end
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local function rejectWrongPlaceId(infoResponseBody)
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if infoResponseBody.expectedPlaceIds ~= nil then
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local foundId = false
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for _, id in ipairs(infoResponseBody.expectedPlaceIds) do
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if id == game.PlaceId then
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foundId = true
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break
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end
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end
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if not foundId then
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local idList = {}
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for _, id in ipairs(infoResponseBody.expectedPlaceIds) do
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table.insert(idList, "- " .. tostring(id))
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end
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local message = (
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"Found a Rojo server, but its project is set to only be used with a specific list of places." ..
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"\nYour place ID is %s, but needs to be one of these:" ..
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"\n%s" ..
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"\n\nTo change this list, edit 'servePlaceIds' in your .project.json file."
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):format(
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tostring(game.PlaceId),
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table.concat(idList, "\n")
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)
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return Promise.reject(message)
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end
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end
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return Promise.resolve(infoResponseBody)
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end
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local ApiContext = {}
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ApiContext.__index = ApiContext
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function ApiContext.new(baseUrl)
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assert(type(baseUrl) == "string")
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local self = {
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baseUrl = baseUrl,
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serverId = nil,
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rootInstanceId = nil,
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messageCursor = -1,
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partitionRoutes = nil,
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__baseUrl = baseUrl,
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__serverId = nil,
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__messageCursor = -1,
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}
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setmetatable(self, ApiContext)
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return self
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end
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function ApiContext:onMessage(callback)
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self.onMessageCallback = callback
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return setmetatable(self, ApiContext)
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end
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function ApiContext:connect()
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local url = ("%s/api/rojo"):format(self.baseUrl)
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local url = ("%s/api/rojo"):format(self.__baseUrl)
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return Http.get(url)
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:andThen(rejectFailedRequests)
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:andThen(function(response)
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local body = response:json()
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if body.protocolVersion ~= Config.protocolVersion then
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local message = (
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"Found a Rojo dev server, but it's using a different protocol version, and is incompatible." ..
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"\nMake sure you have matching versions of both the Rojo plugin and server!" ..
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"\n\nYour client is version %s, with protocol version %s. It expects server version %s." ..
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"\nYour server is version %s, with protocol version %s." ..
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"\n\nGo to https://github.com/rojo-rbx/rojo for more details."
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):format(
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Version.display(Config.version), Config.protocolVersion,
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Config.expectedServerVersionString,
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body.serverVersion, body.protocolVersion
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)
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return Promise.reject(message)
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end
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:andThen(Http.Response.json)
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:andThen(rejectWrongProtocolVersion)
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:andThen(function(body)
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assert(validateApiInfo(body))
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if body.expectedPlaceIds ~= nil then
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local foundId = false
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return body
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end)
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:andThen(rejectWrongPlaceId)
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:andThen(function(body)
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self.__serverId = body.serverId
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for _, id in ipairs(body.expectedPlaceIds) do
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if id == game.PlaceId then
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foundId = true
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break
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end
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end
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if not foundId then
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local idList = {}
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for _, id in ipairs(body.expectedPlaceIds) do
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table.insert(idList, "- " .. tostring(id))
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end
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local message = (
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"Found a Rojo server, but its project is set to only be used with a specific list of places." ..
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"\nYour place ID is %s, but needs to be one of these:" ..
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"\n%s" ..
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"\n\nTo change this list, edit 'servePlaceIds' in roblox-project.json"
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):format(
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tostring(game.PlaceId),
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table.concat(idList, "\n")
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)
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return Promise.reject(message)
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end
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end
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self.serverId = body.serverId
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self.partitionRoutes = body.partitions
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self.rootInstanceId = body.rootInstanceId
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return body
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end)
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end
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function ApiContext:read(ids)
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local url = ("%s/api/read/%s"):format(self.baseUrl, table.concat(ids, ","))
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local url = ("%s/api/read/%s"):format(self.__baseUrl, table.concat(ids, ","))
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return Http.get(url)
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:andThen(rejectFailedRequests)
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:andThen(function(response)
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local body = response:json()
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if body.serverId ~= self.serverId then
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:andThen(Http.Response.json)
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:andThen(function(body)
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if body.serverId ~= self.__serverId then
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return Promise.reject("Server changed ID")
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end
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assert(validateApiRead(body))
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self.messageCursor = body.messageCursor
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self.__messageCursor = body.messageCursor
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return body
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end)
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end
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function ApiContext:retrieveMessages()
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local url = ("%s/api/subscribe/%s"):format(self.baseUrl, self.messageCursor)
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local url = ("%s/api/subscribe/%s"):format(self.__baseUrl, self.__messageCursor)
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local function sendRequest()
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return Http.get(url)
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@@ -161,16 +142,15 @@ function ApiContext:retrieveMessages()
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return sendRequest()
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:andThen(rejectFailedRequests)
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:andThen(function(response)
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local body = response:json()
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if body.serverId ~= self.serverId then
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:andThen(Http.Response.json)
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:andThen(function(body)
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if body.serverId ~= self.__serverId then
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return Promise.reject("Server changed ID")
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end
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assert(validateApiSubscribe(body))
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self.messageCursor = body.messageCursor
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self.__messageCursor = body.messageCursor
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return body.messages
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end)
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