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BridgeBus

Name: BridgeBus
Brand: TechHarbour
SKU: prd_0e4688fe70
Price: 51.99 USD
Availability: InStock

Amazon EventBridge and EventBridge Scheduler for Blueprints and C++: publish game events, manage rules, targets, archives and replays, and create one-off, rate and cron…

★★★★★ —(no reviews yet)Updated 6d agov1.0.0

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Highlights

All 13 features →

Put Event and Put Events (auto-split at 10 entries, per-entry results and errors)

BridgeBus Emitter component: queued events, auto-flush interval and batch size, retry…

Event buses: list, describe, create, delete

Rules: list, describe, put (event pattern or schedule expression), enable, disable,…

Targets: put, list, remove, list rule names by target; input transformers, retry…

Archives and replays: create, list, describe, delete archives; start, describe,…

~~$64.99~~$51.99

BridgeBus puts your game on the AWS event bus. Publish what happens in the game - matches finished, purchases, achievements, telemetry - as EventBridge events, and let rules deliver them to Lambda functions, SQS queues, Step Functions workflows, other buses or HTTP endpoints. The game never needs to know who consumes an event.

Put Event sends one event; Put Events sends any number, split at the API limit of 10 per request, with a result for every entry. The BridgeBus Emitter component queues events from gameplay code and flushes them in batches on an interval or when a batch is full, puts throttled events back into the queue, can be paused for telemetry opt-out and reports statistics.

Live-ops tools get the full control plane: list, describe, create and delete event buses; put, enable, disable and delete rules with event patterns or schedule expressions; put, list and remove targets with input transformers, retry policies and dead-letter queues; find the rules that invoke a target; test patterns with the service. Archives record the events of a bus, and replays send a time range of them again - Wait For Replay follows a replay to the end.

EventBridge Scheduler runs your timed events: one-off at(), rate() and cron() schedules with time zones, flexible windows, start and end dates, retry policies and schedules that delete themselves after they ran. Schedule Event emits an event on a bus at a given time in one node - tournament starts, shop rotations, reminders that fire even when the player is offline.

Pure helpers build event patterns with prefix and value filters, check events against patterns locally, parse event envelopes, build and split ARNs, and build and validate schedule expressions. Struct To JSON, JSON To Struct and Get JSON Field turn event details into Blueprint structs and values.

Players get credentials from an Amazon Cognito identity pool, as guests or signed in through Set Login Token. Static keys and the default AWS credential chain are available for development, dedicated servers and tools. Requests run on background worker threads with automatic retries, and every result arrives back on the game thread.

BridgeBus is part of the Alpha XP AWS collection for Unreal Engine 4.27 and 5.8. It includes the AWS SDK for C++ prebuilt for Win64, Linux and Android and ships with styled HTML documentation.

42Blueprint nodes

6Events

19Project settings

2Engine builds

On this pageKey features Blueprint & C++ API Events & delegates Project settings Options & enums Compatibility Technical details What's in the download Quick start Good to know

Key features

Put Event and Put Events (auto-split at 10 entries, per-entry results and errors)
BridgeBus Emitter component: queued events, auto-flush interval and batch size, retry
Event buses: list, describe, create, delete
Rules: list, describe, put (event pattern or schedule expression), enable, disable,
Targets: put, list, remove, list rule names by target; input transformers, retry
Archives and replays: create, list, describe, delete archives; start, describe,
EventBridge Scheduler: create, get, update, delete, list schedules; schedule groups;
Make At / Rate / Cron Expression and Validate Schedule Expression
Make Event Pattern, prefix and value filters, local Event Pattern Matches, Parse
Struct To JSON, JSON To Struct and Get JSON Field
Amazon Cognito identity pools, static keys and the default AWS credential chain
79 Blueprint nodes; background worker threads, retries with back-off, cancellable
C++ API with a native callback

Blueprint & C++ API

Every call is reachable from more than one place — pick the entry point that fits your project:

Class	Type	Nodes	Use it for
BridgeBusLibrary	Function library	29	Configuration, identity, event pattern, schedule expression and JSON helpers for BridgeBus.
BridgeBusEmitterComponent	Actor component	11	Queues game events and sends them to EventBridge in batches: automatically every Auto Flush Interval seconds, as soon as Max Batch Size events are waiting, or w…
Async action nodes	Latent Blueprint nodes	2	Latent node with success / failure output pins.

Callable runs when executed · Pure no exec pin, returns a value · LatentAsync finishes later and fires its outputs

BridgeBus 2

Node	Type	Available on	Description
Cancel	Async	Async	Stops waiting for this request: none of its output pins fire any more. The request itself may still complete on AWS.
Is Finished	Async	Async	True after Cancel was called or the node finished.

Emitter 11

Node	Type	Available on	Description
Queue Event(Detail Type: String, Detail: String, Resources: Array of String) → Boolean	Callable	Component	Queues one event. Empty Detail Type uses Default Detail Type; Detail is the JSON payload (empty = {}). Returns false when the component is paused.
Queue Events(Entries: Array of Bridge Bus Event Entry) → Integer	Callable	Component	Queues prepared entries (see Make Event Entry); empty fields get the component defaults. Returns how many were queued.
Flush() → Boolean	Callable	Component	Sends the queued events now. Returns false when nothing is queued or a flush is already running (it is retried afterwards).
Clear() → Integer	Callable	Component	Drops every queued event without sending it. Returns how many were dropped.
Get Pending Count() → Integer	Pure	Component	Events waiting to be sent (not counting a flush in flight).
Is Flushing() → Boolean	Pure	Component	True while a flush request is in flight.
Set Auto Flush(Interval Seconds: Float, Batch Size: Integer)	Callable	Component	Changes the automatic flush interval (seconds, 0 = off) and batch size at runtime.
Set Emitter Defaults(Source: String, Detail Type: String, Event Bus Name: String)	Callable	Component	Changes the component's default source, detail-type and event bus for events queued from now on.
Get Stats() → Bridge Bus Emitter Stats	Pure	Component	Totals since BeginPlay: queued, sent, failed, dropped, flushes, last flush time.
Set Paused(Pause: Boolean)	Callable	Component	Paused: Queue Event refuses new events and nothing is flushed automatically (for example while the player opted out of telemetry).
Is Paused() → Boolean	Pure	Component	True while the emitter is paused (see Set Paused).

Config 5

Node	Type	Available on	Description
Set Region(Region: String)	Callable	Static	Switches the AWS region used by every following request.
Set Credential Mode(Mode: Bridge Bus Credential Mode)	Callable	Static	Overrides the credential mode from the project settings at runtime.
Is Configured() → Boolean, Problem	Pure	Static	Checks the settings and returns false with a reason when requests cannot work yet.
Set Event Defaults(Event Bus Name: String, Source: String)	Callable	Static	Overrides the settings' Default Event Bus Name and Default Source at runtime (empty keeps the settings value).
Set Scheduler Defaults(Group Name: String, Role Arn: String, Timezone: String)	Callable	Static	Overrides the settings' Default Schedule Group, Default Scheduler Role Arn and Default Timezone at runtime (empty keeps the settings value).

Identity 5

Node	Type	Available on	Description
Set Login Token(Provider: String, Token: String)	Callable	Static	Signs the player in to the Cognito identity pool with a token from an identity provider.
Clear Login Tokens	Callable	Static	Forgets all login tokens and the cached identity (the player becomes a guest again).
Set Static Credentials(Access Key Id: String, Secret Access Key: String, Session Token: String)	Callable	Static	Uses these credentials from now on (Static Keys mode), for example temporary keys handed out by your own backend.
Get Identity Id() → String	Pure	Static	The Cognito identity id of this player, empty until credentials were resolved once.
Make User Pool Provider Name(Region: String, User Pool Id: String) → String	Pure	Static	Builds the identity-pool login key of a Cognito user pool: cognito-idp.<region>.amazonaws.com/<user pool id>.

Events 8

Node	Type	Available on	Description
Make Event Entry(Detail Type: String, Detail: String, Source: String, Event Bus Name: String, Resources: Array of String, …) → Bridge Bus Event Entry	Pure	Static	Builds one event entry for Put Events or the emitter component.
Make Event Pattern(Sources: Array of String, Detail Types: Array of String, Resources: Array of String, Accounts: Array of String, Regions: Array of String) → String	Pure	Static	Builds an event pattern JSON for Put Rule / Create Archive.
Add Pattern Prefix Filter(Event Pattern: String, Field Path: String, Prefix: String) → String	Pure	Static	Adds a prefix filter to an event pattern: the field must start with Prefix.
Add Pattern Value Filter(Event Pattern: String, Field Path: String, Values: Array of String, Values As Json: Boolean) → String	Pure	Static	Adds an exact-match filter to an event pattern: the field must equal one of Values (strings; "true"/"false" and numbers are written as JSON booleans / numbers w…
Event Pattern Matches(Event Pattern: String, Event Json: String) → Boolean	Pure	Static	Checks an event against a pattern on the client, without calling AWS.
Parse Event(Event Json: String) → Boolean, Event	Pure	Static	Parses an EventBridge event envelope (as delivered to SQS, Lambda or API destinations) into its fields.
Make Event Bus Arn(Account Id: String, Event Bus Name: String, Region: String) → String	Pure	Static	Builds the ARN of an event bus: arn:aws:events:<region>:<account>:event-bus/<name>. Empty region = the configured region.
Parse Arn(Arn: String) → Boolean, Partition, Service, Region	Pure	Static	Splits an ARN into its parts; returns false when the text is not an ARN. Resource is everything after the account id.

Rules 2

Node	Type	Available on	Description
Make Rule Target(Id: String, Arn: String, Role Arn: String, Input: String, Input Path: String, …) → Bridge Bus Target	Pure	Static	Builds a rule target for Put Targets.
Set Target Input Transformer(Target: Bridge Bus Target, Paths: Map String → String, Template: String) → Bridge Bus Target	Pure	Static	Gives a rule target an input transformer: Paths map placeholder names to JSONPaths in the event ("player" -> "$.detail.player"), Template uses them as <player>.

Schedules 6

Node	Type	Available on	Description
Make At Expression(Time: Date Time) → String	Pure	Static	Builds a one-off schedule expression: at(yyyy-mm-ddThh:mm:ss) for the given time (UTC unless the schedule's Timezone says otherwise).
Make Rate Expression(Value: Integer, Unit: Bridge Bus Rate Unit) → String	Pure	Static	Builds a rate expression such as rate(5 minutes) or rate(1 day).
Make Cron Expression(Minutes: String, Hours: String, Day Of Month: String, Month: String, Day Of Week: String, …) → String	Pure	Static	Builds a cron expression: cron(Minutes Hours DayOfMonth Month DayOfWeek Year).
Validate Schedule Expression(Schedule Expression: String) → Boolean, Problem	Pure	Static	Checks the syntax of an at(...), rate(...) or cron(...) expression on the client and explains what is wrong.
Make Schedule Target(Arn: String, Role Arn: String, Input: String, Dead Letter Arn: String, Max Retry Attempts: Integer, …) → Bridge Bus Schedule Target	Pure	Static	Builds a schedule target that invokes any AWS resource.
Make Event Bus Schedule Target(Event Bus Arn: String, Detail Type: String, Detail: String, Source: String, Role Arn: String) → Bridge Bus Schedule Target	Pure	Static	Builds a schedule target that puts an event on an event bus when the schedule fires: the scheduled game event.

JSON 3

Node	Type	Available on	Description
Struct To JSON(Struct: Integer) → Boolean, Json	Callable	Static	Converts any struct to a JSON object string (property names are used as keys).
JSON To Struct(Json: String) → Boolean, Out Struct	Callable	Static	Fills a struct from a JSON object string; fields that are missing keep their default values.
Get Json Field(Json: String, Path: String) → Boolean, Value	Pure	Static	Reads one value from a JSON document with a path such as "detail.player.stats[2].score".

Events & delegates

Bind these in Blueprint (drag off the object → Bind Event) or with AddDynamic in C++.

Event	Parameters	Fires on	When it fires
On Success	Result (Bridge Bus Put Result), Error (Bridge Bus Error)	BridgeBusPutEventAction
On Failure	Result (Bridge Bus Put Result), Error (Bridge Bus Error)	BridgeBusPutEventAction
On Completed	Results (Array of Bridge Bus Put Result), Failed Count (Integer)	BridgeBusPutEventsAction
On Progress	Replay (Bridge Bus Replay Info), Error (Bridge Bus Error)	BridgeBusWaitReplayAction
On Flushed	Results (Array of Bridge Bus Put Result), Sent Count (Integer)	BridgeBusEmitterComponent	Fires after each flush with every result and the number of accepted events.
On Failed	Error (Bridge Bus Error), Failed Events (Array of Bridge Bus Event Entry)	BridgeBusEmitterComponent	Fires when a flush could not deliver some events, with the first error and the events that were not accepted (and not re-queued).

Project settings

Configure once under Project Settings › Plugins › BridgeBus — values are saved to the project's config .ini, so they travel with the project and your build.

Setting	Section	Type	What it does
Region	Connection	String	AWS region of your event buses, schedules and identity pool, for example "us-east-1" or "eu-west-1".
Credential Mode	Credentials	Credential Mode	Where request credentials come from.
Identity Pool Id	Credentials	String	Cognito identity pool, for example "us-east-1:01234567-89ab-cdef-0123-456789abcdef".
Allow Guest Access	Credentials	Boolean	Allow unauthenticated (guest) identities before Set Login Token is called. The pool must allow guest access too.
Access Key Id	Credentials	String	Access key for Static Keys mode. Keys saved here end up in DefaultGame.ini - use them for development and servers only.
Secret Access Key	Credentials	String	Secret key for Static Keys mode.
Allow Static Keys In Shipping	Credentials	Boolean	Static keys are refused in Shipping builds unless this is enabled (for example on a dedicated server).
Endpoint Override	Connection	String	Custom endpoint, for example a local emulator such as "http://localhost:4566". Empty = the regional AWS endpoint.
Request Timeout Ms	Connection	Integer	Total time a request may take, in milliseconds.
Connect Timeout Ms	Connection	Integer	Time allowed to open the connection, in milliseconds.
Max Retries	Connection	Integer	Automatic retries with exponential back-off for throttled and transient failures.
Worker Threads	Connection	Integer	Worker threads that run requests in the background (requests never block the game thread).
Verify SSL	Connection	Boolean	Verify TLS certificates. Only disable for a local emulator.
Log Sdk Warnings	Connection	Boolean	Forward SDK warnings and errors to the Output Log (LogBridgeBus).
Default Event Bus Name	EventBridge	String	Event bus used when a node or event leaves Event Bus Name empty. "default" is the account's default bus.
Default Source	EventBridge	String	Event source used when an event leaves Source empty, for example "com.mygame". Rules match on it.
Default Schedule Group	Scheduler	String	Schedule group used when a scheduler node leaves Group Name empty.
Default Scheduler Role Arn	Scheduler	String	IAM role the scheduler assumes to invoke targets when a schedule target leaves Role Arn empty.
Default Timezone	Scheduler	String	IANA time zone for schedule expressions when a schedule leaves Timezone empty, for example "UTC" or "America/Los_Angeles".

Options & enums

Enum	Values
Credential Mode	Cognito Identity Pool Static Keys Default Credential Chain
Rule State	Enabled Disabled Enabled With All CloudTrail Management Events
Archive State	Unknown Enabled Disabled Creating Updating Create Failed Update Failed
Replay State	Unknown Starting Running Cancelling Completed Cancelled Failed
Rate Unit	Minutes Hours Days
Schedule State	Enabled Disabled
Flexible Window Mode	Off Flexible
Action After Completion	None Delete

Compatibility

UE 4.27BridgeBus 4.27.zipUE 5.8BridgeBus 5.8.zip

One ready-made build per engine version is included in the download — copy the one that matches your project.

Platform	Supported in
Windows	Editor & packaged
Linux	Editor & packaged
Android	Packaged builds

Module	Type	Loading phase
BridgeBus	Runtime	Default

Technical details

Code modules	BridgeBus (Runtime), BridgeBusSdk (External, Source/ThirdParty - prebuilt AWS SDK for C++)
Blueprints	0 · C++ classes: 41
Network replicated	No
Development platforms	Windows: Yes, Mac: No, Linux: Yes
Target build platforms	Win64, Linux, Android
Third-party software	Yes - AWS SDK for C++ 1.11.916 (Apache-2.0), with the AWS Common Runtime libraries, in Source/ThirdParty/BridgeBusSdk
Engine versions	Unreal Engine 4.27 · 5.8 — a build for each is included
C++ classes	41 + 24 structs
Blueprint nodes	42
Events	6
Documentation	Documentation.html (in the download)
Download	BridgeBus.zip · 36.9 MB
Version	v1.0.0

What's in the download

File	What it is
BridgeBus 4.27.zip	Plugin build for Unreal Engine 4.27
BridgeBus 5.8.zip	Plugin build for Unreal Engine 5.8
Documentation.html	Documentation (open in a browser)

Quick start

Unzip the download and pick the build that matches your engine (4.27 · 5.8).
Copy the BridgeBus folder into your project's Plugins/ folder (create it if needed).
Open the project, enable BridgeBus under Edit › Plugins and restart the editor.
Fill in Project Settings › Plugins › BridgeBus.
Right-click in any Blueprint graph and search BridgeBus — or include the public headers from C++.
Package for your target platform (Windows, Linux, Android).

Good to know

Built for Unreal Engine 4.27 and 5.8. Requires an AWS account; EventBridge, EventBridge Scheduler and Cognito usage is billed by AWS. Bus, rule, target, archive, replay and schedule-group management nodes need admin IAM permissions and are meant for live-ops tools and servers; game clients usually only need events:PutEvents. On Linux and Android the SDK uses the engine's libcurl and OpenSSL and the engine's certificate store. On Win64 the SDK is one DLL with a plugin-specific name, so BridgeBus can be installed next to other AWS-based plugins. Never ship long-term access keys in a game client: use a Cognito identity pool for players. Developed and maintained by Alpha XP.

Documentation →Support →

Everything included

Put Event and Put Events (auto-split at 10 entries, per-entry results and errors)
BridgeBus Emitter component: queued events, auto-flush interval and batch size, retry…
Event buses: list, describe, create, delete
Rules: list, describe, put (event pattern or schedule expression), enable, disable,…
Targets: put, list, remove, list rule names by target; input transformers, retry…
Archives and replays: create, list, describe, delete archives; start, describe,…
EventBridge Scheduler: create, get, update, delete, list schedules; schedule groups;…
Make At / Rate / Cron Expression and Validate Schedule Expression
Make Event Pattern, prefix and value filters, local Event Pattern Matches, Parse…
Struct To JSON, JSON To Struct and Get JSON Field
Amazon Cognito identity pools, static keys and the default AWS credential chain
79 Blueprint nodes; background worker threads, retries with back-off, cancellable…
C++ API with a native callback

Platforms

WindowsLinuxAndroid

Requirements

Unreal Engine 4.27 and 5.8
Develop on Windows (Win64)
Blueprints and C++

In the download

FileBridgeBus.zip

FormatZIP

Size36.9 MB

Versionv1.0.0

Licence fileIncluded in the archive

SHA-256cff9153e65111a7c…

Personal

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Read the Extended terms

One purchase per product, no subscription. Each licence comes with a signed key — 1 seat on Personal, 5 seats on Commercial, unlimited seats on Extended. Paid licences can be refunded within 14 days from your order page.

v1.0.0Latest
- Unreal Engine 4.27 and 5.8
- Blueprint and C++ API, HTML documentation

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Item details

Versionv1.0.0

ReleasedOct 30, 2026

Last update6d ago

CategoryPlugin › Unreal Engine

PlatformsWindows, Linux, Android

DownloadZIP · 36.9 MB

Screenshots18

SecurityScanned with ClamAV

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