On branch 001-label-backend-spec

Changes to be committed:
	new file:   src/main/java/com/label/common/shiro/BearerToken.java
	new file:   src/main/java/com/label/common/shiro/ShiroConfig.java
	new file:   src/main/java/com/label/common/shiro/TokenFilter.java
	new file:   src/main/java/com/label/common/shiro/TokenPrincipal.java
	new file:   src/main/java/com/label/common/shiro/UserRealm.java
	modified:   src/main/java/com/label/common/statemachine/DatasetStatus.java
	new file:   src/test/java/com/label/AbstractIntegrationTest.java
	new file:   src/test/java/com/label/unit/StateMachineTest.java
	new file:   src/test/resources/db/init.sql

src/main/java/com/label/common/shiro/BearerToken.java

@@ -0,0 +1,26 @@
+package com.label.common.shiro;
+
+import org.apache.shiro.authc.AuthenticationToken;
+
+/**
+ * Shiro AuthenticationToken wrapper for Bearer token strings.
+ */
+public class BearerToken implements AuthenticationToken {
+    private final String token;
+    private final TokenPrincipal principal;
+
+    public BearerToken(String token, TokenPrincipal principal) {
+        this.token = token;
+        this.principal = principal;
+    }
+
+    @Override
+    public Object getPrincipal() {
+        return principal;
+    }
+
+    @Override
+    public Object getCredentials() {
+        return token;
+    }
+}