SOLR-13969: Clean up and document AuditEvent API (#1041)

solr/CHANGES.txt

@@ -152,6 +152,8 @@ Improvements
 * SOLR-13961: When using partial/atomic updates to remove child documents, we now support setting to null or
   an empty list as equivalent to the "remove" command. (Thomas Wöckinger)
 
+* SOLR-13969: Clean up and document AuditEvent API (janhoy)
+
 Optimizations
 ---------------------
 (No changes)

solr/core/src/java/org/apache/solr/security/AuditEvent.java

@@ -29,6 +29,7 @@ import java.util.Map;
 import java.util.regex.Pattern;
 import java.util.stream.Collectors;
 
+import com.fasterxml.jackson.annotation.JsonIgnore;
 import org.apache.solr.common.SolrException;
 import org.apache.solr.common.cloud.ZkStateReader;
 import org.apache.solr.servlet.ServletUtils;
@@ -48,7 +49,7 @@ import static org.apache.solr.security.AuditEvent.EventType.ERROR;
  */
 public class AuditEvent {
   private static final Logger log = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
-  private StringBuffer requestUrl;
+  private String baseUrl;
   private String nodeName;
   private String message;
   private Level level;
@@ -69,7 +70,7 @@ public class AuditEvent {
   private EventType eventType;
   private AuthorizationResponse autResponse;
   private RequestType requestType;
-  private double QTime = -1;
+  private double qTime = -1;
   private int status = -1;
   private Throwable exception;
 
@@ -134,7 +135,7 @@ public class AuditEvent {
     this.httpMethod = httpRequest.getMethod();
     this.httpQueryString = httpRequest.getQueryString();
     this.headers = getHeadersFromRequest(httpRequest);
-    this.requestUrl = httpRequest.getRequestURL();
+    this.baseUrl = httpRequest.getRequestURL().toString();
     this.nodeName = MDC.get(ZkStateReader.NODE_NAME_PROP);
     SolrRequestParsers.parseQueryString(httpQueryString).forEach(sp -> {
       this.solrParams.put(sp.getKey(), Arrays.asList(sp.getValue()));
@@ -223,74 +224,134 @@ public class AuditEvent {
     }
   }
 
+  /**
+   * The human readable message about this event
+   */
   public String getMessage() {
     return message;
   }
 
+  /**
+   * Level of this event. Can be INFO, WARN or ERROR
+   * @return {@link Level} enum
+   */
   public Level getLevel() {
     return level;
   }
 
+  /**
+   * Date that the event happened
+   */
   public Date getDate() {
     return date;
   }
 
+  /**
+   * Username of logged in user, or null if no authenticated user
+   */
   public String getUsername() {
     return username;
   }
 
+  /**
+   * Session identifier
+   */
   public String getSession() {
     return session;
   }
 
+  /**
+   * IP address of the client doing the request
+   */
   public String getClientIp() {
     return clientIp;
   }
 
+  /**
+   * A general purpose context map with potential extra information about the event
+   */
   public Map<String, Object> getContext() {
     return context;
   }
 
+  /**
+   * List of collection names involved in request
+   */
   public List<String> getCollections() {
     return collections;
   }
 
+  /**
+   * Identifies the resource being operated on. This is not the same as URL path.
+   * For queries the resource is relative to collection name, e.g. /select or /update.
+   * For other events the resource may be /api/node/health or /admin/collection
+   */
   public String getResource() {
     return resource;
   }
 
+  /**
+   * The HTTP method. E.g. GET, POST, PUT
+   */
   public String getHttpMethod() {
     return httpMethod;
   }
 
+  /**
+   * Query part of URL or null if query part
+   */
   public String getHttpQueryString() {
     return httpQueryString;
   }
 
+  /**
+   * EventType tells the outcome of the event such as REJECTED, UNAUTHORIZED or ERROR
+   * @return {@link EventType} enum
+   */
   public EventType getEventType() {
     return eventType;
   }
 
+  /**
+   * Host name of the Solr node logging the event
+   */
   public String getSolrHost() {
     return solrHost;
   }
 
+  /**
+   * IP address of the Solr node logging the event
+   */
   public String getSolrIp() {
     return solrIp;
   }
 
+  /**
+   * Port number of the Solr node logging the event
+   */
   public int getSolrPort() {
     return solrPort;
   }
 
+  /**
+   * Map of all HTTP request headers belonging to the request
+   */
   public Map<String, String> getHeaders() {
     return headers;
   }
 
+  /**
+   * Map of all Solr request parameters attached to the request. Pulled from url
+   */
   public Map<String, List<String>> getSolrParams() {
     return solrParams;
   }
 
+  /**
+   * Gets first value of a certain Solr request parameter
+   * @param key name of request parameter to retrieve
+   * @return String value of the first value, regardless of number of valies
+   */
   public String getSolrParamAsString(String key) {
     List<String> v = getSolrParams().get(key);
     if (v != null && v.size() > 0) {
@@ -299,38 +360,80 @@ public class AuditEvent {
     return null;
   }
 
+  /**
+   * The authorization response object from authorization plugin, or null authz has not happened
+   */
   public AuthorizationResponse getAutResponse() {
     return autResponse;
   }
 
+  /**
+   * Node name of Solr node, on the internal format host:port_context, e.g. 10.0.0.1:8983_solr
+   */
   public String getNodeName() {
     return nodeName;
   }
 
+  /**
+   * Determines the type of request. Can be ADMIN, SEARCH, UPDATE, STREAMING, UNKNOWN
+   * @return {@link RequestType} enum
+   */
   public RequestType getRequestType() {
     return requestType;
   }
 
+  /**
+   * HTTP status code of event, i.e. 200 = OK, 401 = unauthorized
+   */
   public int getStatus() {
     return status;
   }
 
+  /**
+   * Request time in milliseconds for completed requests
+   */
   public double getQTime() {
-    return QTime;
+    return qTime;
   }
 
+  /**
+   * In case of ERROR event, find the exception causing the error
+   */
   public Throwable getException() {
     return exception;
   }
 
+  /**
+   * Get baseUrl as StringBuffer for back compat with previous version
+   * @deprecated Please use {@link #getBaseUrl()} instead
+   * @return StringBuffer of the base url without query part
+   */
+  @Deprecated
+  @JsonIgnore
   public StringBuffer getRequestUrl() {
-    return requestUrl;
+    return new StringBuffer(baseUrl);
+  }
+
+  /**
+   * Full URL of the original request. This is {@link #baseUrl} + "?" + {@link #httpQueryString}.
+   * Returns null if not set
+   */
+  public String getUrl() {
+    if (baseUrl == null) return null;
+    return baseUrl + (httpQueryString != null ? "?" + httpQueryString : "");
+  }
+
+  /**
+   * First part of URL of the request, but not including request parameters, or null if not set
+   */
+  public String getBaseUrl() {
+    return baseUrl;
   }
 
   // Setters, builder style
   
-  public AuditEvent setRequestUrl(StringBuffer requestUrl) {
-    this.requestUrl = requestUrl;
+  public AuditEvent setBaseUrl(String baseUrl) {
+    this.baseUrl = baseUrl;
     return this;
   }
 
@@ -429,8 +532,8 @@ public class AuditEvent {
     return this;
   }
 
-  public AuditEvent setQTime(double QTime) {
-    this.QTime = QTime;
+  public AuditEvent setQTime(double qTime) {
+    this.qTime = qTime;
     return this;
   }
 

solr/core/src/test/org/apache/solr/security/AuditLoggerPluginTest.java

@@ -38,6 +38,13 @@ public class AuditLoggerPluginTest extends SolrTestCaseJ4 {
       .setMessage("Anonymous")
       .setResource("/collection1")
       .setDate(SAMPLE_DATE);
+  protected static final AuditEvent EVENT_WITH_URL = new AuditEvent(AuditEvent.EventType.ANONYMOUS)
+      .setHttpMethod("GET")
+      .setMessage("Anonymous")
+      .setResource("/collection1")
+      .setBaseUrl("http://myserver/mypath")
+      .setHttpQueryString("a=b&c=d")
+      .setDate(SAMPLE_DATE);
   protected static final AuditEvent EVENT_ANONYMOUS_REJECTED = new AuditEvent(AuditEvent.EventType.ANONYMOUS_REJECTED)
       .setHttpMethod("GET")
       .setMessage("Anonymous rejected")
@@ -196,4 +203,16 @@ public class AuditLoggerPluginTest extends SolrTestCaseJ4 {
         plugin.formatter.formatEvent(EVENT_AUTHENTICATED));
   }
 
+  @Test
+  public void getBaseUrl() {
+    assertEquals("http://myserver/mypath", EVENT_WITH_URL.getBaseUrl());
+    // Deprecated
+    assertEquals("http://myserver/mypath", EVENT_WITH_URL.getRequestUrl().toString());
+  }
+
+  @Test
+  public void getUrl() {
+    assertEquals("http://myserver/mypath?a=b&c=d",
+        EVENT_WITH_URL.getUrl());
+  }
 }