Class ScenarioCatalog

java.lang.Object

com.eqixiac.equinix.design.resilience.ScenarioCatalog

public final class ScenarioCatalog
extends Object

Enumerates the failure scenarios of a DesignGraph, deterministically.

• Single failures (exhaustive): every metro, Cloud Router, on-ramp, cloud connection, site access circuit and backbone link; then the shared-fate events: every cloud provider region (clouds grouped by provider and region; a cloud with no region is its own group) and every Equinix region the portfolio touches.
• Pairs (bounded): every unordered pair of single-element failures, skipping a pair in which one failure already contains the other (a router and its own metro), in a fixed order, up to a limit.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final record	ScenarioCatalog.Pairs	The pairwise scenarios and how many exist.

Method Summary

Modifier and Type	Method	Description
static ScenarioCatalog.Pairs	pairs(DesignGraph graph, int max)
static List<FailureScenario>	singles(DesignGraph graph)

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

singles

public static List<FailureScenario> singles(DesignGraph graph)

Parameters:

graph - a design graph

Returns:

every single failure: element failures first (metros, routers, on-ramps, connections), then cloud regions, then Equinix regions

pairs

public static ScenarioCatalog.Pairs pairs(DesignGraph graph,
 int max)

Parameters:

graph - a design graph

max - the most pairs to return

Returns:

the pairwise scenarios over the single-element failures