Port to java 17

[ccsdk/apps.git] / cadi / core / src / main / java / org / onap / ccsdk / apps / cadi / taf / EpiTaf.java

diff --git a/cadi/core/src/main/java/org/onap/ccsdk/apps/cadi/taf/EpiTaf.java b/cadi/core/src/main/java/org/onap/ccsdk/apps/cadi/taf/EpiTaf.java
new file mode 100644 (file)
index 0000000..b4102b0
--- /dev/null
+++ b/cadi/core/src/main/java/org/onap/ccsdk/apps/cadi/taf/EpiTaf.java
@@ -0,0 +1,84 @@
+/**
+ * ============LICENSE_START====================================================
+ * org.onap.ccsdk
+ * ===========================================================================
+ * Copyright (c) 2023 AT&T Intellectual Property. All rights reserved.
+ * ===========================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END====================================================
+ *
+ */
+
+package org.onap.ccsdk.apps.cadi.taf;
+
+import org.onap.ccsdk.apps.cadi.CadiException;
+import org.onap.ccsdk.apps.cadi.Taf;
+
+/**
+ * EpiTAF
+ *
+ * Short for "Epic TAF". Be able to run through a series of TAFs to obtain the validation needed.
+ *
+ * OK, the name could probably be better as "Tafs", like it was originally, but the pun was too
+ * irresistible for this author to pass up.
+ *
+ * @author Jonathan
+ *
+ */
+public class EpiTaf implements Taf {
+    private Taf[] tafs;
+
+    /**
+     * EpiTaf constructor
+     *
+     * Construct the EpiTaf from variable TAF parameters
+     * @param tafs
+     * @throws CadiException
+     */
+    public EpiTaf(Taf ... tafs) throws CadiException{
+        this.tafs = tafs;
+        if (tafs.length==0) throw new CadiException("Need at least one Taf implementation in constructor");
+    }
+
+    /**
+     * validate
+     *
+     * Respond with the first TAF to authenticate user based on variable info and "LifeForm" (is it
+     * a human behind an interface, or a server behind a protocol).
+     *
+     * If there is no TAF that can authenticate, respond with the first TAF that suggests it can
+     * establish an Authentication conversation (TRY_AUTHENTICATING).
+     *
+     * If no TAF declares either, respond with NullTafResp (which denies all questions)
+     */
+    public TafResp validate(LifeForm reading, String... info) {
+        TafResp tresp,firstTryAuth=null;
+        for (Taf taf : tafs) {
+            tresp = taf.validate(reading, info);
+            switch(tresp.isAuthenticated()) {
+                case TRY_ANOTHER_TAF:
+                    break;
+                case TRY_AUTHENTICATING:
+                    if (firstTryAuth==null)firstTryAuth=tresp;
+                    break;
+                default:
+                    return tresp;
+            }
+        }
+
+        // No TAFs configured, at this point.  It is safer at this point to be "not validated",
+        // rather than "let it go"
+        return firstTryAuth == null?NullTafResp.singleton():firstTryAuth;
+    }
+
+}