Changes to the audit logging implementation

Changes to the API and implementation, fixed
issues, added javadoc and unit tests, changed
scope of some dependencies to "provided" to
prevent transitive when not needed.

Change-Id: Ib76ae2f921846c2115fcc5cc61b93625307a7c65
Issue-ID: SDC-772
Signed-off-by: vempo <vitaliy.emporopulo@amdocs.com>

2 files changed, 198 insertions, 19 deletions

diff --git a/openecomp-be/lib/openecomp-sdc-logging-lib/openecomp-sdc-logging-api/src/main/java/org/openecomp/sdc/logging/api/AuditData.java b/openecomp-be/lib/openecomp-sdc-logging-lib/openecomp-sdc-logging-api/src/main/java/org/openecomp/sdc/logging/api/AuditData.java
index 7292762474..fdef45a57f 100644
--- a/openecomp-be/lib/openecomp-sdc-logging-lib/openecomp-sdc-logging-api/src/main/java/org/openecomp/sdc/logging/api/AuditData.java
+++ b/openecomp-be/lib/openecomp-sdc-logging-lib/openecomp-sdc-logging-api/src/main/java/org/openecomp/sdc/logging/api/AuditData.java
@@ -17,34 +17,186 @@
 package org.openecomp.sdc.logging.api;
 
 /**
- * @author KATYR
+ * Builder to populate audit data for logging according to
+ * <a href="https://wiki.onap.org/download/attachments/1015849/ONAP%20application%20logging%20guidelines.pdf?api=v2>
+ * ONAP application logging guidelines</a>. This includes only data known to an application, and not otherwise available
+ * to the logging framework.
+ *
+ * @author KATYR, evitaliy
  * @since February 15, 2018
- * This interface defines part of the Audit log application is responsible to provide.
- * Fields list is according to ONAP application logging guidelines
- * (https://wiki.onap.org/download/attachments/1015849/ONAP%20application%20logging%20guidelines.pdf?api=v2)
- * StartTime -> BeginTimestamp (Date-time that processing for the activities begins)
- * EndTime-> EndTimestamp (Date-time that processing for the activities being logged ends)
- * StatusCode -> StatusCode (indicate high level success or failure of the operation activities that is invoked)
- * ResponseCode -> ResponseCode(application-specific response code returned by the operation activities)
- * ResponseDescription - > ResponseDescription (human readable description of the response code)
- * ClientIpAddress -> ClientIpAddress (Requesting remote client application’s IP address)
  */
+public class AuditData {
+
+    // A concrete implementation interface was chosen over an interface to enable to gracefully
+    // add new fields without affecting client code
+
+    private final long startTime;
+    private final long endTime;
+    private final StatusCode statusCode;
+    private final String responseCode;
+    private final String responseDescription;
+    private final String clientIpAddress;
 
-public interface AuditData {
+    AuditData(final AuditDataBuilder builder) {
+        this.startTime = builder.startTime;
+        this.endTime = builder.endTime;
+        this.statusCode = builder.statusCode;
+        this.responseCode = builder.responseCode;
+        this.responseDescription = builder.responseDescription;
+        this.clientIpAddress = builder.clientIpAddress;
+    }
+
+    /**
+     * Begin timestamp of an API invocation
+     *
+     * @return timestamp
+     */
+    public long getStartTime() {
+        return startTime;
+    }
 
-    enum StatusCode {
-        COMPLETE, ERROR
+    /**
+     * End timestamp of an API invocation
+     *
+     * @return timestamp
+     */
+    public long getEndTime() {
+        return endTime;
     }
 
-    long getStartTime();
+    /**
+     * Result status of an API invocation
+     *
+     * @return protocol and application agnostic status code
+     */
+    public StatusCode getStatusCode() {
+        return statusCode;
+    }
 
-    long getEndTime();
+    /**
+     * Application/protocol specific response status of an API invocation
+     *
+     * @return response code
+     */
+    public String getResponseCode() {
+        return responseCode;
+    }
 
-    StatusCode getStatusCode();
+    /**
+     * Application/protocol specific response in a human-friendly way
+     *
+     * @return human-friendly response description
+     */
+    public String getResponseDescription() {
+        return responseDescription;
+    }
 
-    String getResponseCode();
+    /**
+     * IP address of the invoking client when available
+     *
+     * @return IP address
+     */
+    public String getClientIpAddress() {
+        return clientIpAddress;
+    }
 
-    String getResponseDescription();
+    @Override
+    public String toString() {
+        return "AuditData{startTime=" + startTime + ", endTime=" + endTime + ", statusCode=" + statusCode +
+            ", responseCode='" + responseCode + ", responseDescription=" + responseDescription + ", clientIpAddress="
+            + clientIpAddress + '}';
+    }
 
-    String getClientIpAddress();
+    public static AuditDataBuilder builder() {
+        return new AuditDataBuilder();
+    }
+
+    public static class AuditDataBuilder {
+
+        private long startTime;
+        private long endTime;
+        private StatusCode statusCode;
+        private String responseCode;
+        private String responseDescription;
+        private String clientIpAddress;
+
+        AuditDataBuilder() { /* package-private default constructor to hide the public one */ }
+
+        /**
+         * Begin timestamp of an activity being audited
+         *
+         * @param startTime local timestamp, usually received from {@link System#currentTimeMillis()}
+         * @return this builder for fluent API
+         */
+        public AuditDataBuilder startTime(final long startTime) {
+            this.startTime = startTime;
+            return this;
+        }
+
+        /**
+         * End timestamp of an activity being audited
+         *
+         * @param endTime local timestamp, usually received from {@link System#currentTimeMillis()}
+         * @return this builder for fluent API
+         */
+        public AuditDataBuilder endTime(final long endTime) {
+            this.endTime = endTime;
+            return this;
+        }
+
+        /**
+         * Indicate whether an invocation was successful. It is up the the application to decide if a particular result
+         * must be treated as a success or a failure.
+         *
+         * @param statusCode invocation status success/failure
+         * @return this builder for fluent API
+         */
+        public AuditDataBuilder statusCode(final StatusCode statusCode) {
+            this.statusCode = statusCode;
+            return this;
+        }
+
+        /**
+         * Application/protocol specific response code. For a Web API, it is likely a standard HTTP response code.
+         *
+         * @param responseCode response code that depends on application and invocation protocol
+         * @return this builder for fluent API
+         */
+        public AuditDataBuilder responseCode(final String responseCode) {
+            this.responseCode = responseCode;
+            return this;
+        }
+
+        /**
+         * Response description that explains {@link #responseCode(String)} in a human-friendly way. For a Web API, it
+         * is likely to be a standard HTTP response phrase.
+         *
+         * @param responseDescription human-friendly response description
+         * @return this builder for fluent API
+         */
+        public AuditDataBuilder responseDescription(final String responseDescription) {
+            this.responseDescription = responseDescription;
+            return this;
+        }
+
+        /**
+         * IP address of an invoking client.
+         *
+         * @param clientIpAddress IP address
+         * @return this builder for fluent API
+         */
+        public AuditDataBuilder clientIpAddress(final String clientIpAddress) {
+            this.clientIpAddress = clientIpAddress;
+            return this;
+        }
+
+        /**
+         * Create an instance of {@link AuditData}
+         *
+         * @return a populated instance of audit data
+         */
+        public AuditData build() {
+            return new AuditData(this);
+        }
+    }
 }
diff --git a/openecomp-be/lib/openecomp-sdc-logging-lib/openecomp-sdc-logging-api/src/main/java/org/openecomp/sdc/logging/api/StatusCode.java b/openecomp-be/lib/openecomp-sdc-logging-lib/openecomp-sdc-logging-api/src/main/java/org/openecomp/sdc/logging/api/StatusCode.java
new file mode 100644
index 0000000000..dd8bd57dcc
--- /dev/null
+++ b/openecomp-be/lib/openecomp-sdc-logging-lib/openecomp-sdc-logging-api/src/main/java/org/openecomp/sdc/logging/api/StatusCode.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright © 2016-2018 European Support Limited
+ *
+ * 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.
+ */
+
+package org.openecomp.sdc.logging.api;
+
+/**
+ * Protocol-agnostic status codes to indicate the result status (success, failure) of an API invocation.
+ *
+ * @author EVITALIY
+ * @since 04 Mar 18
+ */
+public enum StatusCode {
+    COMPLETE, ERROR
+}