adding missing files

src/main/java/com/release11/klaus/controller/EventController.java

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+package com.release11.klaus.controller;
+
+import com.release11.klaus.model.EventRequestDto;
+import com.release11.klaus.service.EtrackService;
+import lombok.AllArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Controller;
+import org.springframework.validation.BindingResult;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.ResponseBody;
+
+import javax.validation.Valid;
+
+@Slf4j
+@Controller
+@RequestMapping
+@AllArgsConstructor
+public class EventController {
+
+    private final EtrackService etrackService;
+    
+    @PostMapping("/eventsForm")
+    @ResponseBody
+    public String getLogs(@Valid EventRequestDto eventsDto, BindingResult bindingResult){
+        return String.valueOf(etrackService.getEventsByDateTimeAndBusinessKeys(eventsDto));
+    }
+}
+

src/main/java/com/release11/klaus/controller/MvcExceptionHandler.java

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+package com.release11.klaus.controller;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.validation.BindException;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+
+import javax.validation.ConstraintViolationException;
+import java.util.ArrayList;
+import java.util.List;
+
+@ControllerAdvice
+public class MvcExceptionHandler {
+
+    @ExceptionHandler(ConstraintViolationException.class)
+    public ResponseEntity<List> validationErrorHandler(ConstraintViolationException e){
+        List<String> errors = new ArrayList<>(e.getConstraintViolations().size());
+
+        e.getConstraintViolations().forEach(constraintViolation -> {
+            errors.add(constraintViolation.getPropertyPath() + " : " + constraintViolation.getMessage());
+        });
+        return new ResponseEntity<>(errors, HttpStatus.BAD_REQUEST);
+    }
+
+    @ExceptionHandler(BindException.class)
+    public ResponseEntity<List> handleBindException(BindException ex){
+        return new ResponseEntity(ex.getAllErrors(), HttpStatus.BAD_REQUEST);
+    }
+
+}
+
+

src/main/java/com/release11/klaus/model/Event.java

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+package com.release11.klaus.model;
+
+import com.release11.klaus.utilis.BusinessKey;
+import lombok.*;
+import org.springframework.format.annotation.DateTimeFormat;
+import org.springframework.lang.Nullable;
+
+import javax.persistence.Entity;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.time.LocalTime;
+import java.util.List;
+import java.util.Map;
+import java.util.UUID;
+
+@Data
+@Entity
+@Builder
+@ToString
+@NoArgsConstructor
+@AllArgsConstructor
+public class Event {
+
+    @DateTimeFormat(pattern = "yyyy-MM-ddTHH:mm:ss")
+    private LocalDateTime dateTimeStamp;
+    @Nullable
+    private String[] businessKeys;
+    private String thread;
+    private String level;
+    @Nullable
+    private String message;
+}
+
+//{"date" : "%d{yyyy-MM-dd}", "timestamp":"%d{HH:mm:ss}", "businessKeys": {"interfaceName": "%X{interfaceName}",
+// "clientUUID": "%X{clientUUID}", "messageId": "%X{messageId}"},"thread":"%t","level":"%-5level", "message":"%msg"}%n

src/main/java/com/release11/klaus/model/EventRequestDto.java

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+package com.release11.klaus.model;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import org.springframework.format.annotation.DateTimeFormat;
+
+import java.time.LocalDateTime;
+import java.util.UUID;
+
+@Data
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+public class EventRequestDto {
+
+    private UUID clientUUID;
+    @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
+    private LocalDateTime localDateTimeFrom;
+    @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
+    private LocalDateTime localDateTimeTo;
+    private int mockedResponseId;
+
+}

src/main/java/com/release11/klaus/repository/EventRepository.java

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+package com.release11.klaus.repository;
+
+import com.release11.klaus.model.Event;
+import com.release11.klaus.utilis.BusinessKey;
+import org.springframework.stereotype.Repository;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.time.LocalDateTime;
+import java.util.List;
+import java.util.Map;
+
+@Repository
+@Transactional
+public interface EventRepository {
+    List<Event> findEvents(LocalDateTime localDateTimeFrom, LocalDateTime localDateTimeTo,
+                           Map<BusinessKey, String> businessKeys);
+}

src/main/java/com/release11/klaus/repository/EventRepositoryImpl.java

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+package com.release11.klaus.repository;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.release11.klaus.model.Event;
+import com.release11.klaus.utilis.BusinessKey;
+import lombok.AllArgsConstructor;
+import org.springframework.boot.configurationprocessor.json.JSONException;
+import org.springframework.boot.configurationprocessor.json.JSONObject;
+import org.springframework.stereotype.Repository;
+import redis.clients.jedis.Jedis;
+import redis.clients.jedis.JedisPool;
+
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.time.LocalTime;
+import java.util.*;
+import java.util.stream.Collectors;
+
+@Repository
+@AllArgsConstructor
+public class EventRepositoryImpl implements EventRepository {
+
+    private final String LOG_PREFIX = "logstash_";
+    private final JedisPool jedisPool;
+    private final ObjectMapper objectMapper;
+
+    @Override
+    public List<Event> findEvents(LocalDateTime localDateTimeFrom, LocalDateTime localDateTimeTo,
+                                   Map<BusinessKey, String> businessKeys) {
+        List<String> eventStrings = findEventsBetweenDates(localDateTimeFrom.toLocalDate(), localDateTimeTo.toLocalDate());
+        if (businessKeys.size() > 0) {
+            eventStrings = businessKeysFilter(eventStrings, businessKeys);
+        }
+        List<Event> events = parseEvents(eventStrings);
+        if (localDateTimeFrom.toLocalTime() != LocalTime.MIN) {
+            events = events.stream().filter(event -> event.getDateTimeStamp().compareTo(localDateTimeFrom) >= 0)
+                    .collect(Collectors.toList());
+        }
+        return events.stream().filter(event -> event.getDateTimeStamp().compareTo(localDateTimeTo) <= 0)
+                .collect(Collectors.toList());
+    }
+
+    private List<String> findEventsBetweenDates(LocalDate localDateFrom, LocalDate localDateTo) {
+        try (Jedis jedis = jedisPool.getResource()) {
+            return localDateFrom.datesUntil(localDateTo.plusDays(1)).map(day -> LOG_PREFIX + day.toString())
+                    .map(key -> jedis.lrange(key, 0, -1)).flatMap(Collection::stream).collect(Collectors.toList());
+        }
+    }
+
+    private List<String> businessKeysFilter(List<String> events, Map<BusinessKey, String> businessKeys) {
+        List<String> resultList = new ArrayList<>();
+        for (Map.Entry<BusinessKey, String> entry : businessKeys.entrySet()) {
+            String stringPattern = "\"" + entry.getKey() + ":" + entry.getValue() + "\"";
+            resultList = events.stream().filter(s -> s.contains(stringPattern)).collect(Collectors.toList());
+        }
+        return resultList;
+    }
+
+    private List<Event> parseEvents(List<String> eventStrings) {
+        List<Event> events = new ArrayList<>();
+        for (String eventString : eventStrings) {
+            try {
+                events.add(objectMapper.readValue(eventString, Event.class));
+            } catch (JsonProcessingException e) {
+                System.out.println(e);
+                e.printStackTrace();
+            }
+        }
+        return events;
+    }
+}

src/main/java/com/release11/klaus/service/EtrackService.java

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+package com.release11.klaus.service;
+
+import com.release11.klaus.model.Event;
+import com.release11.klaus.model.EventRequestDto;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public interface EtrackService {
+    List<Event> getEventsByDateTimeAndBusinessKeys(EventRequestDto eventsDto);
+}

src/main/java/com/release11/klaus/service/EtrackServiceImpl.java

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+package com.release11.klaus.service;
+
+import com.release11.klaus.model.Event;
+import com.release11.klaus.model.EventRequestDto;
+import com.release11.klaus.repository.EventRepository;
+import com.release11.klaus.utilis.BusinessKey;
+import lombok.AllArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Service;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+@Slf4j
+@Service
+@AllArgsConstructor
+public class EtrackServiceImpl implements EtrackService {
+
+    private final EventRepository eventRepository;
+
+    @Override
+    public List<Event> getEventsByDateTimeAndBusinessKeys(EventRequestDto eventsDto) {
+        Map<BusinessKey, String> businessKeys = new HashMap<>();
+        businessKeys.put(BusinessKey.CLIENT_UUID, eventsDto.getClientUUID().toString());
+        return eventRepository.findEvents(eventsDto.getLocalDateTimeFrom(), eventsDto.getLocalDateTimeTo(),
+                businessKeys);
+    }
+}

src/main/java/com/release11/klaus/utilis/RedisAppender.java

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+package com.release11.klaus.utilis;
+
+import java.time.LocalDate;
+import java.util.Arrays;
+import java.util.Iterator;
+
+import com.cwbase.logback.AdditionalField;
+import com.cwbase.logback.JSONEventLayout;
+import org.apache.commons.pool2.impl.GenericObjectPoolConfig;
+
+import ch.qos.logback.classic.spi.ILoggingEvent;
+import ch.qos.logback.core.Layout;
+import ch.qos.logback.core.UnsynchronizedAppenderBase;
+import redis.clients.jedis.Jedis;
+import redis.clients.jedis.JedisPool;
+import redis.clients.jedis.Protocol;
+
+public class RedisAppender extends UnsynchronizedAppenderBase<ILoggingEvent> {
+
+    JedisPool pool;
+
+    // keep this for config compatibility for now
+    JSONEventLayout jsonlayout;
+
+    Layout<ILoggingEvent> layout;
+
+    // logger configurable options
+    String host = "localhost";
+    int port = Protocol.DEFAULT_PORT;
+    String key = null;
+    int timeout = Protocol.DEFAULT_TIMEOUT;
+    String password = null;
+    int database = Protocol.DEFAULT_DATABASE;
+
+    public RedisAppender() {
+        jsonlayout = new JSONEventLayout();
+    }
+
+    @Override
+    protected void append(ILoggingEvent event) {
+        Jedis client = pool.getResource();
+        try {
+            String json = layout == null ? jsonlayout.doLayout(event) : layout.doLayout(event);
+            key = "logstash_" + LocalDate.now();
+            client.rpush(key, json);
+        } catch (Exception e) {
+            e.printStackTrace();
+        } finally {
+            if (client != null) {
+                client.close();
+            }
+        }
+    }
+
+    @Deprecated
+    public String getSource() {
+        return jsonlayout.getSource();
+    }
+
+    @Deprecated
+    public void setSource(String source) {
+        jsonlayout.setSource(source);
+    }
+
+    @Deprecated
+    public String getSourceHost() {
+        return jsonlayout.getSourceHost();
+    }
+
+    @Deprecated
+    public void setSourceHost(String sourceHost) {
+        jsonlayout.setSourceHost(sourceHost);
+    }
+
+    @Deprecated
+    public String getSourcePath() {
+        return jsonlayout.getSourcePath();
+    }
+
+    @Deprecated
+    public void setSourcePath(String sourcePath) {
+        jsonlayout.setSourcePath(sourcePath);
+    }
+
+    @Deprecated
+    public String getTags() {
+        if (jsonlayout.getTags() != null) {
+            Iterator<String> i = jsonlayout.getTags().iterator();
+            StringBuilder sb = new StringBuilder();
+            while (i.hasNext()) {
+                sb.append(i.next());
+                if (i.hasNext()) {
+                    sb.append(',');
+                }
+            }
+            return sb.toString();
+        }
+        return null;
+    }
+
+    @Deprecated
+    public void setTags(String tags) {
+        if (tags != null) {
+            String[] atags = tags.split(",");
+            jsonlayout.setTags(Arrays.asList(atags));
+        }
+    }
+
+    @Deprecated
+    public String getType() {
+        return jsonlayout.getType();
+    }
+
+    @Deprecated
+    public void setType(String type) {
+        jsonlayout.setType(type);
+    }
+
+    public String getHost() {
+        return host;
+    }
+
+    public void setHost(String host) {
+        this.host = host;
+    }
+
+    public int getPort() {
+        return port;
+    }
+
+    public void setPort(int port) {
+        this.port = port;
+    }
+
+    public String getKey() {
+        return key;
+    }
+
+    public void setKey(String key) {
+        this.key = key;
+    }
+
+    public int getTimeout() {
+        return timeout;
+    }
+
+    public void setTimeout(int timeout) {
+        this.timeout = timeout;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public int getDatabase() {
+        return database;
+    }
+
+    public void setDatabase(int database) {
+        this.database = database;
+    }
+
+    @Deprecated
+    public void setMdc(boolean flag) {
+        jsonlayout.setProperties(flag);
+    }
+
+    @Deprecated
+    public boolean getMdc() {
+        return jsonlayout.getProperties();
+    }
+
+    @Deprecated
+    public void setLocation(boolean flag) {
+        jsonlayout.setLocationInfo(flag);
+    }
+
+    @Deprecated
+    public boolean getLocation() {
+        return jsonlayout.getLocationInfo();
+    }
+
+    @Deprecated
+    public void setCallerStackIndex(int index) {
+        jsonlayout.setCallerStackIdx(index);
+    }
+
+    @Deprecated
+    public int getCallerStackIndex() {
+        return jsonlayout.getCallerStackIdx();
+    }
+
+    @Deprecated
+    public void addAdditionalField(AdditionalField p) {
+        jsonlayout.addAdditionalField(p);
+    }
+
+    public Layout<ILoggingEvent> getLayout() {
+        return layout;
+    }
+
+    public void setLayout(Layout<ILoggingEvent> layout) {
+        this.layout = layout;
+    }
+
+    @Override
+    public void start() {
+        super.start();
+        GenericObjectPoolConfig config = new GenericObjectPoolConfig();
+        config.setTestOnBorrow(true);
+        pool = new JedisPool(config, host, port, timeout, password, database);
+    }
+
+    @Override
+    public void stop() {
+        super.stop();
+        pool.destroy();
+    }
+
+}

src/main/resources/static/css/styles.css

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+.page-section{
+  padding: 2rem 0;
+}
+
+.page-section .column{
+    float: left;
+    width: 50%;
+}
+
+.page-section .row:after {
+  content: "";
+  display: table;
+  clear: both;
+}