Added new child module 'services-security'

Author: artem-v

services-security/src/main/java/io/scalecube/services/security/CompositeAuthenticator.java

@@ -0,0 +1,47 @@
+package io.scalecube.services.security;
+
+import io.scalecube.services.auth.Authenticator;
+import java.util.Map;
+import org.jctools.maps.NonBlockingHashMapLong;
+import reactor.core.publisher.Mono;
+
+/**
+ * Implementation of {@link Authenticator} which works on top of existing {@code authenticator}.
+ * Internally maintains a map of service claims where key is some id (of type {@code long}) and
+ * value is {@link ServiceClaims} object.
+ *
+ * @see #saveAuthData(long, ServiceClaims)
+ * @see #getAuthData(long)
+ * @see #removeAuthData(long)
+ */
+public final class CompositeAuthenticator implements Authenticator<ServiceClaims> {
+
+  private final Authenticator<ServiceClaims> authenticator;
+
+  private final Map<Long, ServiceClaims> registry = new NonBlockingHashMapLong<>();
+
+  public CompositeAuthenticator(Authenticator<ServiceClaims> authenticator) {
+    this.authenticator = authenticator;
+  }
+
+  @Override
+  public Mono<ServiceClaims> apply(Map<String, String> credentials) {
+    return authenticator.apply(credentials);
+  }
+
+  public void saveAuthData(long id, ServiceClaims serviceClaims) {
+    registry.put(id, serviceClaims);
+  }
+
+  public ServiceClaims getAuthData(long id) {
+    return registry.get(id);
+  }
+
+  public void removeAuthData(long id) {
+    registry.remove(id);
+  }
+
+  public boolean containsAuthData(long id) {
+    return registry.containsKey(id);
+  }
+}

services-security/src/main/java/io/scalecube/services/security/ServiceTokenAuthenticator.java

@@ -10,9 +10,13 @@
 import reactor.util.retry.Retry;
 
 /**
- * Generic {@link Authenticator} implementation based on abstract {@link JwtTokenResolver}. Using
- * token resolver this authenticator turns extracted and verified token claims into the {@link
+ * Implementation of {@link Authenticator} backed up by provided {@link JwtTokenResolver}. Using
+ * token resolver this authenticator turns extracted (and verified) token claims into the {@link
  * ServiceClaims} object.
+ *
+ * @see #apply(Map)
+ * @see ServiceTokens
+ * @see ServiceClaims
  */
 public final class ServiceTokenAuthenticator implements Authenticator<ServiceClaims> {