mergebot_states.dot

# https://edotor.net/

digraph MergeBot {

    subgraph states {
        node [shape=oval][style=filled,fillcolor=lightgray]
        starting [penwidth=3]
        idle
        ready
        integrating
        runningStatusChecks
        integrationFailed
    }

    subgraph events {
        node [shape=box][style=dotted]
        ".pullRequestsLoaded(empty)"
        ".pullRequestsLoaded(!empty)"
        ".pullRequestDidChange(.include)"
        ".pullRequestDidChange(.exclude)"
        ".noMorePullRequests"
        ".integrationDidChangeStatus(.done)"
        ".integrationDidChangeStatus(.failed)"
        ".integrationDidChangeStatus(.updating)"
        ".integrate"
        ".statusChecksDidComplete(.passed)"
        ".statusChecksDidComplete(.failed)"
        ".statusChecksDidComplete(.timedOut)"
        ".integrationFailureHandled"
        ".retryIntegration"
    }

    subgraph cluster_reduce {
        color=blue
        label="reduce()"

        subgraph reduceStarting {
            starting -> ".pullRequestsLoaded(empty)" -> idle
            starting -> ".pullRequestsLoaded(!empty)" -> ready
        }

        subgraph reduceIdle {
            idle -> ".pullRequestDidChange(.include)" -> ready
        }

        subgraph reduceReady {
            ready -> ".noMorePullRequests" -> idle
            ready -> ".integrate" -> integrating
        }

        subgraph reduceIntegrating {
            integrating -> ".integrationDidChangeStatus(.done)" -> ready
            integrating -> ".integrationDidChangeStatus(.failed)" -> integrationFailed
            integrating -> ".integrationDidChangeStatus(.updating)" -> runningStatusChecks
            integrating -> ".pullRequestDidChange(.exclude)" -> ready
            integrating -> ".retryIntegration" -> integrating
        }

        subgraph reduceRunningStatusChecks {
            runningStatusChecks -> ".statusChecksDidComplete(.passed)" -> integrating
            runningStatusChecks -> ".statusChecksDidComplete(.failed)" -> integrationFailed
            runningStatusChecks -> ".statusChecksDidComplete(.timedOut)" -> integrationFailed
            runningStatusChecks -> ".pullRequestDidChange(.exclude)" -> ready
        }

        subgraph reduceIntegrationFailed {
            integrationFailed -> ".integrationFailureHandled" -> ready
        }
    }
}