Add Message Search Functionality

.gitignore

@@ -17,3 +17,4 @@ settings.xml
 kafka.properties*
 kafka.truststore.jks*
 kafka.keystore.jks*
+/.vs

src/main/java/kafdrop/controller/MessageController.java

@@ -31,6 +31,7 @@
 import kafdrop.config.MessageFormatConfiguration.MessageFormatProperties;
 import kafdrop.config.ProtobufDescriptorConfiguration.ProtobufDescriptorProperties;
 import kafdrop.config.SchemaRegistryConfiguration.SchemaRegistryProperties;
+import kafdrop.form.SearchMessageForm;
 import kafdrop.model.MessageVO;
 import kafdrop.model.TopicPartitionVO;
 import kafdrop.model.TopicVO;
@@ -59,6 +60,7 @@
 import java.io.File;
 import java.util.ArrayList;
 import java.util.Comparator;
+import java.util.Date;
 import java.util.List;
 
 @Tag(name = "message-controller", description = "Message Controller")
@@ -193,10 +195,71 @@ public String viewMessageForm(@PathVariable("name") String topicName,
     return "message-inspector";
   }
 
+  /**
+   * Human friendly view of searching messages.
+   *
+   * @param topicName         Name of topic
+   * @param searchMessageForm Message form for submitting requests to search messages.
+   * @param errors
+   * @param model
+   * @return View for seeing messages in a partition.
+   */
+  @GetMapping("/topic/{name:.+}/search-messages")
+  public String searchMessageForm(@PathVariable("name") String topicName,
+                                  @Valid @ModelAttribute("searchMessageForm") SearchMessageForm searchMessageForm,
+                                  BindingResult errors,
+                                  Model model) {
+    final MessageFormat defaultFormat = messageFormatProperties.getFormat();
+    final MessageFormat defaultKeyFormat = messageFormatProperties.getKeyFormat();
+
+    if (searchMessageForm.isEmpty()) {
+      final SearchMessageForm defaultForm = new SearchMessageForm();
+
+      defaultForm.setSearchText("");
+      defaultForm.setFormat(defaultFormat);
+      defaultForm.setKeyFormat(defaultFormat);
+      defaultForm.setMaximumCount(100);
+      defaultForm.setStartTimestamp(new Date(0));
+      model.addAttribute("searchMessageForm", defaultForm);
+    }
+
+    final TopicVO topic = kafkaMonitor.getTopic(topicName)
+      .orElseThrow(() -> new TopicNotFoundException(topicName));
+
+    model.addAttribute("topic", topic);
+    model.addAttribute("defaultFormat", defaultFormat);
+    model.addAttribute("messageFormats", MessageFormat.values());
+    model.addAttribute("defaultKeyFormat", defaultKeyFormat);
+    model.addAttribute("keyFormats", KeyFormat.values());
+    model.addAttribute("descFiles", protobufProperties.getDescFilesList());
+
+    if (!searchMessageForm.isEmpty() && !errors.hasErrors()) {
+
+      final var deserializers = new Deserializers(
+        getDeserializer(topicName, searchMessageForm.getKeyFormat(), searchMessageForm.getDescFile(),
+          searchMessageForm.getMsgTypeName(),
+          protobufProperties.getParseAnyProto()),
+        getDeserializer(topicName, searchMessageForm.getFormat(), searchMessageForm.getDescFile(),
+          searchMessageForm.getMsgTypeName(),
+          protobufProperties.getParseAnyProto())
+      );
+
+      var searchResults = kafkaMonitor.searchMessages(
+        topicName,
+        searchMessageForm.getSearchText(),
+        searchMessageForm.getMaximumCount(),
+        searchMessageForm.getStartTimestamp(),
+        deserializers);
+
+      model.addAttribute("messages", searchResults.getMessages());
+      model.addAttribute("details", searchResults.getCompletionDetails());
+    }
+
+    return "search-message";
+  }
 
   /**
-   * Returns the selected nessagr format based on the
-   * form submission
+   * Returns the selected message format based on the form submission
    *
    * @param format String representation of format name
    * @return

src/main/java/kafdrop/form/SearchMessageForm.java

@@ -0,0 +1,106 @@
+package kafdrop.form;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import jakarta.validation.constraints.Max;
+import jakarta.validation.constraints.Min;
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.NotNull;
+import kafdrop.util.MessageFormat;
+import org.springframework.format.annotation.DateTimeFormat;
+
+import java.util.Date;
+
+public class SearchMessageForm {
+
+  @NotBlank
+  private String searchText;
+
+  @NotNull
+  @Min(1)
+  @Max(1000)
+  private Integer maximumCount;
+
+  private MessageFormat format;
+
+  private MessageFormat keyFormat;
+
+  private String descFile;
+
+  private String msgTypeName;
+
+  @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss.SSS")
+  private Date startTimestamp;
+
+  public SearchMessageForm(String searchText, MessageFormat format) {
+    this.searchText = searchText;
+    this.format = format;
+  }
+
+  public Date getStartTimestamp() {
+    return startTimestamp;
+  }
+
+  public void setStartTimestamp(Date startTimestamp) {
+    this.startTimestamp = startTimestamp;
+  }
+
+  public SearchMessageForm(String searchText) {
+    this(searchText, MessageFormat.DEFAULT);
+  }
+
+  public SearchMessageForm() {
+  }
+
+  @JsonIgnore
+  public boolean isEmpty() {
+    return searchText == null || searchText.isEmpty();
+  }
+
+  public String getSearchText() {
+    return searchText;
+  }
+
+  public void setSearchText(String searchText) {
+    this.searchText = searchText;
+  }
+
+  public Integer getMaximumCount() {
+    return maximumCount;
+  }
+
+  public void setMaximumCount(Integer maximumCount) {
+    this.maximumCount = maximumCount;
+  }
+
+  public MessageFormat getKeyFormat() {
+    return keyFormat;
+  }
+
+  public void setKeyFormat(MessageFormat keyFormat) {
+    this.keyFormat = keyFormat;
+  }
+
+  public MessageFormat getFormat() {
+    return format;
+  }
+
+  public void setFormat(MessageFormat format) {
+    this.format = format;
+  }
+
+  public String getDescFile() {
+    return descFile;
+  }
+
+  public void setDescFile(String descFile) {
+    this.descFile = descFile;
+  }
+
+  public String getMsgTypeName() {
+    return msgTypeName;
+  }
+
+  public void setMsgTypeName(String msgTypeName) {
+    this.msgTypeName = msgTypeName;
+  }
+}

src/main/java/kafdrop/model/SearchResultsVO.java

@@ -0,0 +1,43 @@
+/*
+ * Copyright 2021 Kafdrop contributors.
+ *
+ * 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 kafdrop.model;
+
+import java.util.List;
+
+public final class SearchResultsVO {
+  private List<MessageVO> messages;
+
+  private String completionDetails;
+
+  public List<MessageVO> getMessages() {
+    return messages;
+  }
+
+  public String getCompletionDetails() {
+    return completionDetails;
+  }
+
+  public void setCompletionDetails(String completionDetails) {
+    this.completionDetails = completionDetails;
+  }
+
+  public void setMessages(List<MessageVO> messages) {
+    this.messages = messages;
+  }
+}