Amazon GameLift server SDK (Go) reference: Data types - Amazon GameLift
LogParametersProcessParametersUpdateGameSessionGameSessionServerParametersStartMatchBackfillRequestPlayerDescribePlayerSessionsRequestStopMatchBackfillRequestGetFleetRoleCredentialsRequest
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Amazon GameLift server SDK (Go) reference: Data types

You can use this Amazon GameLift Go server SDK reference to help you prepare your multiplayer game for use with Amazon GameLift. For details about the integration process, see Add Amazon GameLift to your game server.

LogParameters

An object identifying files generated during a game session that you want Amazon GameLift to upload and store after the game session ends. The game server provides LogParameters to Amazon GameLift as part of a ProcessParameters object in a ProcessReady() call.

Properties

 Description
LogPaths

The list of directory paths to game server log files that you want Amazon GameLift to store for future access. The server process generates these files during each game session. You define file paths and names in your game server and store them in the root game build directory.

The log paths must be absolute. For example, if your game build stores game session logs in a path such as MyGame\sessionLogs\, then the path would be c:\game\MyGame\sessionLogs on a Windows instance.

Type: []string

Required: No

ProcessParameters

An object describing the communication between a server process and Amazon GameLift. The server process provides this information to Amazon GameLift with a call to ProcessReady().

Properties

 Description
LogParameters An object with directory paths to files that are generated during a game session. Amazon GameLift copies and stores the files for future access.

Type: LogParameters

Required: No
OnHealthCheck The callback function that Amazon GameLift invokes to request a health status report from the server process. Amazon GameLift calls this function every 60 seconds and waits 60 seconds for a response. The server process returns TRUE if healthy, FALSE if not healthy. If no response is returned, Amazon GameLift records the server process as not healthy.

Type: OnHealthCheck func() bool

Required: No
OnProcessTerminate The callback function that Amazon GameLift invokes to force the server process to shut down. After calling this function, Amazon GameLift waits 5 minutes for the server process to shut down and respond with a ProcessEnding() call before it shuts down the server process.

Type: OnProcessTerminate func()

Required: Yes
OnStartGameSession The callback function that Amazon GameLift invokes to pass an updated game session object to the server process. Amazon GameLift calls this function when a match backfill request has been processed to provide updated matchmaker data. It passes a GameSession object, a status update (updateReason), and the match backfill ticket ID.

Type: OnStartGameSession func (model.GameSession )

Required: Yes
OnUpdateGameSession The callback function that Amazon GameLift invokes to pass updated game session information to the server process. Amazon GameLift calls this function after processing a match backfill request to provide updated matchmaker data.

Type: OnUpdateGameSession func (model.UpdateGameSession)

Required: No
Port The port number that the server process listens on for new player connections. The value must fall into the port range configured for any fleet deploying this game server build. This port number is included in game session and player session objects, which game sessions use when connecting to a server process.

Type: int

Required: Yes

UpdateGameSession

The updates to a game session object, which includes the reason that the game session was updated, and the related backfill ticket ID if backfill is being used to fill player sessions in the game session.

Properties Description
GameSession A GameSession object defined by the Amazon GameLift API. The GameSession object contains properties describing a game session.

Type: GameSession GameSession()

Required: Yes
UpdateReason The reason that the game session is being updated.

Type: UpdateReason UpdateReason()

Required: Yes
BackfillTicketId The ID of the backfill ticket attempting to update the game session.

Type: String

Required: No

GameSession

The details of a game session.

Properties Description
GameSessionId

A unique identifier for the game session. A game session Amazon Resource Name (ARN) has the following format: arn:aws:gamelift:<region>::gamesession/<fleet ID>/<custom ID string or idempotency token>.

Type: String

Required: No
Name

A descriptive label of the game session.

Type: String

Required: No
FleetId

A unique identifier for the fleet that the game session is running on.

Type: String

Required: No
MaximumPlayerSessionCount

The maximum number of player connections to the game session.

Type: Integer

Required: No
Port

The port number for the game session. To connect to a Amazon GameLift game server, an app needs both the IP address and port number.

Type: Integer

Required: No
IpAddress

The IP address of the game session. To connect to a Amazon GameLift game server, an app needs both the IP address and port number.

Type: String

Required: No
GameSessionData

A set of custom game session properties, formatted as a single string value.

Type: String

Required: No
MatchmakerData

The information about the matchmaking process that was used to create the game session, in JSON syntax, formatted as a string. In addition to the matchmaking configuration used, it contains data on all players assigned to the match, including player attributes and team assignments.

Type: String

Required: No
GameProperties

A set of custom properties for a game session, formatted as key:value pairs. These properties are passed with a request to start a new game session.

Type: map[string] string

Required: No
DnsName

The DNS identifier assigned to the instance that's running the game session. Values have the following format:

  • TLS-enabled fleets: <unique identifier>.<region identifier>.amazongamelift.com.

  • Non-TLS-enabled fleets: ec2-<unique identifier>.compute.amazonaws.com.

When connecting to a game session that's running on a TLS-enabled fleet, you must use the DNS name, not the IP address.

Type: String

Required: No

ServerParameters

Information used to maintain the connection between an Amazon GameLift Anywhere server and the Amazon GameLift service. This information is used when launching new server processes with InitSDK(). For servers hosted on Amazon GameLift managed EC2 instances, use an empty object.

Properties Description
WebSocketURL

The GameLiftServerSdkEndpoint Amazon GameLift returns when you RegisterCompute for an Amazon GameLift Anywhere compute resource.

Type: string

Required: Yes
ProcessID

A unique identifier registered to the server process hosting your game.

Type: string

Required: Yes
HostID

The unique identifier of the compute resource that's hosting the new server process.

The HostID is the ComputeName used when you registered your compute. For more information, see RegisterCompute.

Type: string

Required: Yes
FleetID The unique identifier of the fleet that the compute is registered to. For more information, see RegisterCompute.

Type: string

Required: Yes
AuthToken The authentication token generated by Amazon GameLift that authenticates your server to Amazon GameLift. For more information, see GetComputeAuthToken.

Type: string

Required: Yes

StartMatchBackfillRequest

Information used to create a matchmaking backfill request. The game server communicates this information to Amazon GameLift in a StartMatchBackfill() call.

Properties Description
GameSessionArn

The unique game session identifier. The API operation GetGameSessionId returns the identifier in ARN format.

Type: String

Required: Yes
MatchmakingConfigurationArn

The unique identifier (in the form of an ARN) for the matchmaker to use for this request. The matchmaker ARN for the original game session is in the game session object in the matchmaker data property. For more information about matchmaker data, see Work with matchmaker data.

Type: String

Required: Yes
Players

A set of data that represents all players who are currently in the game session. The matchmaker uses this information to search for new players who are good matches for the current players.

Type: []model.Player

Required: Yes
TicketId

The unique identifier for a matchmaking or match backfill request ticket. If you don't provide a value, Amazon GameLift generates one. Use this identifier to track the match backfill ticket status or cancel the request if needed.

Type: String

Required: No

Player

The object that represents a player in matchmaking. When a matchmaking request starts, a player has a player ID, attributes, and possibly latency data. Amazon GameLift adds team information after a match is made.

Properties Description
LatencyInMS

A set of values expressed in milliseconds that indicate the amount of latency that a player experiences when connected to a location.

If this property is used, the player is only matched for locations listed. If a matchmaker has a rule that evaluates player latency, players must report latency to be matched.

Type: map[string] int

Required: No
PlayerAttributes

A collection of key:value pairs that contain player information for use in matchmaking. Player attribute keys must match the PlayerAttributes used in a matchmaking rule set.

For more information about player attributes, see AttributeValue.

Type: map[string] AttributeValue

Required: No
PlayerId

A unique identifier for a player.

Type: String

Required: No
Team

The name of the team that the player is assigned to in a match. You define the team name in the matchmaking rule set.

Type: String

Required: No

DescribePlayerSessionsRequest

An object that specifies which player sessions to retrieve. The server process provides this information with a DescribePlayerSessions() call to Amazon GameLift.

Properties Description
GameSessionID

A unique game session identifier. Use this parameter to request all player sessions for the specified game session.

Game session ID format is arn:aws-cn:gamelift:<region>::gamesession/fleet-<fleet ID>/<ID string>. The GameSessionID is a custom ID string or a generated string.

Type: String

Required: No
PlayerSessionID

The unique identifier for a player session. Use this parameter to request a single specific player session.

Type: String

Required: No
PlayerID

The unique identifier for a player. Use this parameter to request all player sessions for a specific player. See Generate player IDs.

Type: String

Required: No
PlayerSessionStatusFilter

The player session status to filter results on. Possible player session statuses include:

  • RESERVED – The player session request was received, but the player hasn't connected to the server process or been validated.

  • ACTIVE – The player was validated by the server process and is connected.

  • COMPLETED – The player connection dropped.

  • TIMEDOUT – A player session request was received, but the player didn't connect or wasn't validated within the time-out limit (60 seconds).

Type: String

Required: No
NextToken

The token indicating the start of the next page of results. To specify the start of the result set, don't provide a value. If you provide a player session ID, this parameter is ignored.

Type: String

Required: No
Limit

The maximum number of results to return. If you provide a player session ID, this parameter is ignored.

Type: int

Required: No

StopMatchBackfillRequest

Information used to cancel a matchmaking backfill request. The game server communicates this information to Amazon GameLift service in a StopMatchBackfill() call.

Properties Description
GameSessionArn

The unique game session identifier of the request being canceled.

Type: string

Required: No
MatchmakingConfigurationArn

The unique identifier of the matchmaker this request was sent to.

Type: string

Required: No
TicketId

The unique identifier of the backfill request ticket to be canceled.

Type: string

Required: No

GetFleetRoleCredentialsRequest

The role credentials that extend limited access to your Amazon resources to the game server. For more information see, Set up an IAM service role for Amazon GameLift.

Properties Description
RoleArn The ARN of the service role that extends limited access to your Amazon resources.

Type: string

Required: Yes
RoleSessionName The name of the session that describes the use of the role credentials.

Type: string

Required: Yes