Improve export perf: guard debug logs, scope triggers, memoize path bindings.

Reduce multi-config call-chain cost by filtering triggers before pathfinding and cache path-binding walks per session, while avoiding debug string work on hot constant-resolution paths.

Co-authored-by: Cursor <cursoragent@cursor.com>

state_machine_exporter/src/main/java/click/kamil/springstatemachineexporter/analysis/enricher/CallChainEnricher.java

@@ -1,5 +1,6 @@
 package click.kamil.springstatemachineexporter.analysis.enricher;
 
+import click.kamil.springstatemachineexporter.analysis.enricher.MachineScopeFilter;
 import click.kamil.springstatemachineexporter.analysis.model.AnalysisResult;
 import click.kamil.springstatemachineexporter.analysis.model.CallChain;
 import click.kamil.springstatemachineexporter.analysis.model.CodebaseMetadata;
@@ -26,10 +27,12 @@ public class CallChainEnricher implements AnalysisEnricher {
         List<TriggerPoint> canonicalTriggers = intelligence.findTriggerPoints().stream()
                 .map(trigger -> MachineEnumCanonicalizer.canonicalizeTriggerPoint(trigger, machineTypes))
                 .collect(Collectors.toList());
+        List<TriggerPoint> scopedTriggers = MachineScopeFilter.filterTriggersForMachine(
+                canonicalTriggers, result.getName(), context);
 
         List<CallChain> chains = intelligence.findCallChains(
                 result.getMetadata().getEntryPoints(),
-                canonicalTriggers
+                scopedTriggers
         );
         chains = chains.stream()
                 .map(chain -> chain.getTriggerPoint() == null

state_machine_exporter/src/main/java/click/kamil/springstatemachineexporter/analysis/service/AbstractCallGraphEngine.java

@@ -104,6 +104,7 @@ public abstract class AbstractCallGraphEngine implements CallGraphEngine {
         polymorphicCallCache.clear();
         context.clearAnalysisCaches();
         pathFinder.clearAnalysisCaches();
+        pathBindingEvaluator.clearAnalysisCaches();
         parsedNodeCache.clear();
         Map<String, List<CallEdge>> callGraph = buildCallGraph();
         List<CallChain> chains = new ArrayList<>();

state_machine_exporter/src/main/java/click/kamil/springstatemachineexporter/analysis/service/ConstantExtractor.java

@@ -305,19 +305,26 @@ public class ConstantExtractor {
             CompilationUnit contextCu,
             ResolutionBudget budget,
             boolean allowWidenToImplementations) {
-        log.debug("ConstantExtractor.resolveMethodReturnConstant CALLED: className={}, methodName={}", className, methodName);
-        log.debug("Entering resolveMethodReturnConstant with className={}, methodName={}, depth={}", className, methodName, depth);
+        final boolean debug = log.isDebugEnabled();
+        if (debug) {
+            log.debug("ConstantExtractor.resolveMethodReturnConstant CALLED: className={}, methodName={}", className, methodName);
+            log.debug("Entering resolveMethodReturnConstant with className={}, methodName={}, depth={}", className, methodName, depth);
+        }
         if (budget == null) {
             budget = ResolutionBudget.defaults();
         }
         final ResolutionBudget activeBudget = budget;
         if (activeBudget.isMethodReturnExhausted(depth)) {
-            log.debug("Exiting resolveMethodReturnConstant early (depth limit) for {}.{}", className, methodName);
+            if (debug) {
+                log.debug("Exiting resolveMethodReturnConstant early (depth limit) for {}.{}", className, methodName);
+            }
             return Collections.emptyList();
         }
         String fqn = className + "." + methodName;
         if (!visited.add(fqn)) {
-            log.debug("Exiting resolveMethodReturnConstant early (cycle detected) for fqn={}", fqn);
+            if (debug) {
+                log.debug("Exiting resolveMethodReturnConstant early (cycle detected) for fqn={}", fqn);
+            }
             return Collections.emptyList();
         }
 
@@ -483,8 +490,9 @@ public class ConstantExtractor {
             }
         }
         visited.remove(fqn);
-        log.debug("resolveMethodReturnConstant className={} methodName={} returns: {}", className, methodName, constants);
-        log.debug("resolveMethodReturnConstant for class={}, method={} resolved constants: {}", className, methodName, constants);
+        if (debug) {
+            log.debug("resolveMethodReturnConstant className={} methodName={} returns: {}", className, methodName, constants);
+        }
         return constants;
     }
 

state_machine_exporter/src/main/java/click/kamil/springstatemachineexporter/analysis/service/PathBindingEvaluator.java

@@ -9,6 +9,7 @@ import org.eclipse.jdt.core.dom.*;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.StringJoiner;
 
 /**
  * Walks a call path forward, propagating known parameter / local bindings so switch-case
@@ -20,6 +21,7 @@ public class PathBindingEvaluator {
     private final VariableTracer variableTracer;
     private final ConstantResolver constantResolver;
     private final TypeResolver typeResolver;
+    private final Map<String, Map<String, String>> traceBindingsCache = new HashMap<>();
 
     public PathBindingEvaluator(
             CodebaseContext context,
@@ -34,10 +36,26 @@ public class PathBindingEvaluator {
 
     /** Visible for tests: bindings accumulated while walking a path forward (ignores constraint rejection). */
     Map<String, String> traceBindings(List<String> path, Map<String, List<CallEdge>> callGraph, CallGraphPathFinder pathFinder) {
-        Map<String, String> bindings = new HashMap<>();
         if (path == null || path.size() < 2) {
-            return bindings;
+            return Map.of();
         }
+        String cacheKey = pathCacheKey(path);
+        Map<String, String> cached = traceBindingsCache.get(cacheKey);
+        if (cached != null) {
+            return new HashMap<>(cached);
+        }
+        Map<String, String> bindings = computeTraceBindings(path, callGraph, pathFinder);
+        traceBindingsCache.put(cacheKey, Map.copyOf(bindings));
+        return new HashMap<>(bindings);
+    }
+
+    public void clearAnalysisCaches() {
+        traceBindingsCache.clear();
+    }
+
+    private Map<String, String> computeTraceBindings(
+            List<String> path, Map<String, List<CallEdge>> callGraph, CallGraphPathFinder pathFinder) {
+        Map<String, String> bindings = new HashMap<>();
         for (int i = 0; i < path.size() - 1; i++) {
             String caller = path.get(i);
             String target = path.get(i + 1);
@@ -50,6 +68,14 @@ public class PathBindingEvaluator {
         return bindings;
     }
 
+    private static String pathCacheKey(List<String> path) {
+        StringJoiner joiner = new StringJoiner("\0");
+        for (String hop : path) {
+            joiner.add(hop);
+        }
+        return joiner.toString();
+    }
+
     public boolean isPathCompatible(
             List<String> path,
             Map<String, List<CallEdge>> callGraph,