{
    select: {
        installation_error_timestamps: "INSPECT:core/system-update/omaha-client-service:root/platform_metrics/installation_error_events/children/*:ts",
    },
    eval: {
        // The timestamps output by OMCL are monontonic time, and Now() is as well.
        last_24_hours: "Fn([time], time > Now() - Hours(24))",
        installation_errors_today: "Count(Filter(last_24_hours, installation_error_timestamps))",
    },
    act: {
        installation_error_today: {
            type: "Snapshot",
            trigger: "installation_errors_today >= 1",
            repeat: "Hours(24)",
            signature: "installation-error-today",
        },
    },
    test: {
        recent_installation_error: {
            yes: [
                "installation_error_today",
            ],
            now: "Hours(48)",
            values: {
                installation_error_timestamps: [
                    // A day's worth of nanoseconds is 8.64e13, the second timestamp should trigger.
                    7e13,
                    9e13,
                ],
            },
        },
        no_recent_installation_error: {
            no: [
                "installation_error_today",
            ],
            now: "Hours(48)",
            values: {
                installation_error_timestamps: [
                    // A day's worth of nanoseconds is 8.64e13, neither should trigger.
                    6e13,
                    7e13,
                ],
            },
        },
        no_installation_error: {
            no: [
                "installation_error_today",
            ],
            now: "Hours(48)",
            values: {
                installation_error_timestamps: [],
            },
        },
    },
}