Support for dynamic OIDC JWK set resolution

extensions/oidc-common/runtime/src/main/java/io/quarkus/oidc/common/OidcRequestContextProperties.java

@@ -4,13 +4,25 @@
 
 public class OidcRequestContextProperties {
 
+    public static String TOKEN = "token";
+    public static String TOKEN_CREDENTIAL = "token_credential";
+
     private final Map<String, Object> properties;
 
     public OidcRequestContextProperties(Map<String, Object> properties) {
         this.properties = properties;
     }
 
-    public Object getProperty(String name) {
+    public Object get(String name) {
         return properties.get(name);
     }
+
+    public String getString(String name) {
+        return (String) get(name);
+    }
+
+    public <T> T get(String name, Class<T> type) {
+        return type.cast(get(name));
+    }
+
 }

extensions/oidc/runtime/pom.xml

@@ -50,6 +50,11 @@
             <artifactId>quarkus-junit5-internal</artifactId>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.awaitility</groupId>
+            <artifactId>awaitility</artifactId>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <build>

extensions/oidc/runtime/src/main/java/io/quarkus/oidc/OidcTenantConfig.java

@@ -381,6 +381,81 @@ public void setCleanUpTimerInterval(Duration cleanUpTimerInterval) {
         }
     }
 
+    /**
+     * Configuration for controlling how JsonWebKeySet containing verification keys should be acquired and managed.
+     */
+    @ConfigItem
+    public Jwks jwks = new Jwks();
+
+    @ConfigGroup
+    public static class Jwks {
+
+        /**
+         * If JWK verification keys should be fetched at the moment a connection to the OIDC provider
+         * is initialized.
+         * <p/>
+         * Disabling this property will delay the key acquisition until the moment the current token
+         * has to be verified. Typically it can only be necessary if the token or other telated request properties
+         * provide an additional context which is required to resolve the keys correctly.
+         */
+        @ConfigItem(defaultValue = "true")
+        public boolean resolveEarly = true;
+
+        /**
+         * Maximum number of JWK keys that can be cached.
+         * This property will be ignored if the {@link #resolveEarly} property is set to true.
+         */
+        @ConfigItem(defaultValue = "10")
+        public int cacheSize = 10;
+
+        /**
+         * Number of minutes a JWK key can be cached for.
+         * This property will be ignored if the {@link #resolveEarly} property is set to true.
+         */
+        @ConfigItem(defaultValue = "10M")
+        public Duration cacheTimeToLive = Duration.ofMinutes(10);
+
+        /**
+         * Cache timer interval.
+         * If this property is set then a timer will check and remove the stale entries periodically.
+         * This property will be ignored if the {@link #resolveEarly} property is set to true.
+         */
+        @ConfigItem
+        public Optional<Duration> cleanUpTimerInterval = Optional.empty();
+
+        public int getCacheSize() {
+            return cacheSize;
+        }
+
+        public void setCacheSize(int cacheSize) {
+            this.cacheSize = cacheSize;
+        }
+
+        public Duration getCacheTimeToLive() {
+            return cacheTimeToLive;
+        }
+
+        public void setCacheTimeToLive(Duration cacheTimeToLive) {
+            this.cacheTimeToLive = cacheTimeToLive;
+        }
+
+        public Optional<Duration> getCleanUpTimerInterval() {
+            return cleanUpTimerInterval;
+        }
+
+        public void setCleanUpTimerInterval(Duration cleanUpTimerInterval) {
+            this.cleanUpTimerInterval = Optional.of(cleanUpTimerInterval);
+        }
+
+        public boolean isResolveEarly() {
+            return resolveEarly;
+        }
+
+        public void setResolveEarly(boolean resolveEarly) {
+            this.resolveEarly = resolveEarly;
+        }
+    }
+
     @ConfigGroup
     public static class Frontchannel {
         /**

extensions/oidc/runtime/src/main/java/io/quarkus/oidc/runtime/BackChannelLogoutTokenCache.java

@@ -1,103 +1,33 @@
 package io.quarkus.oidc.runtime;
 
-import java.util.Iterator;
-import java.util.Map;
-import java.util.concurrent.ConcurrentHashMap;
-import java.util.concurrent.atomic.AtomicInteger;
+import jakarta.enterprise.event.Observes;
 
 import io.quarkus.oidc.OidcTenantConfig;
-import io.vertx.core.Handler;
+import io.quarkus.runtime.ShutdownEvent;
 import io.vertx.core.Vertx;
 
 public class BackChannelLogoutTokenCache {
-    private OidcTenantConfig oidcConfig;
 
-    private Map<String, CacheEntry> cacheMap = new ConcurrentHashMap<>();;
-    private AtomicInteger size = new AtomicInteger();
+    final MemoryCache<TokenVerificationResult> cache;
 
     public BackChannelLogoutTokenCache(OidcTenantConfig oidcTenantConfig, Vertx vertx) {
-        this.oidcConfig = oidcTenantConfig;
-        init(vertx);
-    }
-
-    private void init(Vertx vertx) {
-        cacheMap = new ConcurrentHashMap<>();
-        if (oidcConfig.logout.backchannel.cleanUpTimerInterval.isPresent()) {
-            vertx.setPeriodic(oidcConfig.logout.backchannel.cleanUpTimerInterval.get().toMillis(), new Handler<Long>() {
-                @Override
-                public void handle(Long event) {
-                    // Remove all the entries which have expired
-                    removeInvalidEntries();
-                }
-            });
-        }
+        cache = new MemoryCache<TokenVerificationResult>(vertx, oidcTenantConfig.logout.backchannel.cleanUpTimerInterval,
+                oidcTenantConfig.logout.backchannel.tokenCacheTimeToLive, oidcTenantConfig.logout.backchannel.tokenCacheSize);
     }
 
     public void addTokenVerification(String token, TokenVerificationResult result) {
-        if (!prepareSpaceForNewCacheEntry()) {
-            clearCache();
-        }
-        cacheMap.put(token, new CacheEntry(result));
+        cache.add(token, result);
     }
 
     public TokenVerificationResult removeTokenVerification(String token) {
-        CacheEntry entry = removeCacheEntry(token);
-        return entry == null ? null : entry.result;
+        return cache.remove(token);
     }
 
     public boolean containsTokenVerification(String token) {
-        return cacheMap.containsKey(token);
-    }
-
-    public void clearCache() {
-        cacheMap.clear();
-        size.set(0);
-    }
-
-    private void removeInvalidEntries() {
-        long now = now();
-        for (Iterator<Map.Entry<String, CacheEntry>> it = cacheMap.entrySet().iterator(); it.hasNext();) {
-            Map.Entry<String, CacheEntry> next = it.next();
-            if (isEntryExpired(next.getValue(), now)) {
-                it.remove();
-                size.decrementAndGet();
-            }
-        }
-    }
-
-    private boolean prepareSpaceForNewCacheEntry() {
-        int currentSize;
-        do {
-            currentSize = size.get();
-            if (currentSize == oidcConfig.logout.backchannel.tokenCacheSize) {
-                return false;
-            }
-        } while (!size.compareAndSet(currentSize, currentSize + 1));
-        return true;
+        return cache.containsKey(token);
     }
 
-    private CacheEntry removeCacheEntry(String token) {
-        CacheEntry entry = cacheMap.remove(token);
-        if (entry != null) {
-            size.decrementAndGet();
-        }
-        return entry;
-    }
-
-    private boolean isEntryExpired(CacheEntry entry, long now) {
-        return entry.createdTime + oidcConfig.logout.backchannel.tokenCacheTimeToLive.toMillis() < now;
-    }
-
-    private static long now() {
-        return System.currentTimeMillis();
-    }
-
-    private static class CacheEntry {
-        volatile TokenVerificationResult result;
-        long createdTime = System.currentTimeMillis();
-
-        public CacheEntry(TokenVerificationResult result) {
-            this.result = result;
-        }
+    void shutdown(@Observes ShutdownEvent event, Vertx vertx) {
+        cache.stopTimer(vertx);
     }
 }