finished guided project

usermodel-exceptions-initial/pom.xml

@@ -5,7 +5,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.2.8.RELEASE</version>
+        <version>2.2.9.RELEASE</version>
         <relativePath/> <!-- lookup parent from repository -->
     </parent>
     <groupId>com.lambdaschool</groupId>
@@ -15,7 +15,7 @@
     <description>Demo project for Spring Boot</description>
 
     <properties>
-        <java.version>14</java.version>
+        <java.version>11</java.version>
     </properties>
 
     <dependencies>

usermodel-exceptions-initial/src/main/java/com/lambdaschool/usermodel/config/SwaggerWebMVC.java

@@ -0,0 +1,18 @@
+package com.lambdaschool.usermodel.config;
+
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+@Configuration
+public class SwaggerWebMVC implements WebMvcConfigurer {
+
+    @Override
+    public void addResourceHandlers(ResourceHandlerRegistry registry) {
+        registry.addResourceHandler("swagger-ui.html")
+                .addResourceLocations("classpath:/META-INF/resources/");
+        registry.addResourceHandler("/webjars/**")
+                .addResourceLocations("classpath:/META-INF/resources/webjars");
+    }
+}

usermodel-exceptions-initial/src/main/java/com/lambdaschool/usermodel/exceptions/CustomErrorDetails.java

@@ -0,0 +1,35 @@
+package com.lambdaschool.usermodel.exceptions;
+
+import com.lambdaschool.usermodel.services.HelperFunctions;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.web.servlet.error.DefaultErrorAttributes;
+import org.springframework.stereotype.Component;
+import org.springframework.web.context.request.WebRequest;
+
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+
+@Component
+public class CustomErrorDetails extends DefaultErrorAttributes {
+
+    @Autowired
+    HelperFunctions helperFunctions;
+
+    @Override
+    public Map<String, Object> getErrorAttributes(WebRequest webRequest, boolean includeStackTrace) {
+
+        Map<String, Object> errorAttributes = super.getErrorAttributes(webRequest, includeStackTrace);
+
+        Map<String, Object> errorDetails = new LinkedHashMap<>();
+        errorDetails.put("title", errorAttributes.get("error"));
+        errorDetails.put("status", errorAttributes.get("status"));
+        errorDetails.put("detail", errorAttributes.get("message"));
+        errorDetails.put("timestamp", errorAttributes.get("timestamp"));
+        errorDetails.put("developerMessage", "path " + errorAttributes.get("path"));
+
+        errorDetails.put("errors", helperFunctions.getConstraintViolations(this.getError(webRequest)));
+
+        return errorDetails;
+    }
+}

usermodel-exceptions-initial/src/main/java/com/lambdaschool/usermodel/exceptions/ResourceNotFoundException.java

@@ -0,0 +1,10 @@
+package com.lambdaschool.usermodel.exceptions;
+
+
+
+public class ResourceNotFoundException extends RuntimeException {
+
+    public ResourceNotFoundException(String message) {
+        super("Error from application " + message);
+    }
+}

usermodel-exceptions-initial/src/main/java/com/lambdaschool/usermodel/handlers/RestExceptionHandler.java

@@ -0,0 +1,57 @@
+package com.lambdaschool.usermodel.handlers;
+
+import com.lambdaschool.usermodel.exceptions.ResourceNotFoundException;
+import com.lambdaschool.usermodel.models.ErrorDetail;
+import com.lambdaschool.usermodel.services.HelperFunctions;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.core.Ordered;
+import org.springframework.core.annotation.Order;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+import org.springframework.web.context.request.WebRequest;
+import org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler;
+
+import java.util.Date;
+
+
+@Order(Ordered.HIGHEST_PRECEDENCE)
+@RestControllerAdvice
+public class RestExceptionHandler extends ResponseEntityExceptionHandler {
+
+    @Autowired
+    HelperFunctions helperFunctions;
+
+    public RestExceptionHandler() {
+        super();
+    }
+
+    @ExceptionHandler(ResourceNotFoundException.class)
+    public ResponseEntity<?> handleResourceNotFoundException(ResourceNotFoundException rnfe){
+        ErrorDetail errorDetail = new ErrorDetail();
+        errorDetail.setTimestamp(new Date());
+        errorDetail.setStatus(HttpStatus.NOT_FOUND.value());
+        errorDetail.setTitle("Resource not Found");
+        errorDetail.setDetail(rnfe.getMessage());
+        errorDetail.setDeveloperMessage(rnfe.getClass().getName());
+
+        errorDetail.setErrors(helperFunctions.getConstraintViolations(rnfe));
+
+        return new ResponseEntity<>(errorDetail, null, HttpStatus.NOT_FOUND);
+    }
+    @Override
+    protected ResponseEntity<Object> handleExceptionInternal(Exception ex, Object body, HttpHeaders headers, HttpStatus status, WebRequest request) {
+
+        ErrorDetail errDetail = new ErrorDetail();
+        errDetail.setTimestamp(new Date());
+        errDetail.setStatus(status.value());
+        errDetail.setTitle("Rest Internal Exception");
+        errDetail.setDetail(ex.getMessage());
+        errDetail.setDeveloperMessage(ex.getClass().getName());
+
+        errDetail.setErrors(helperFunctions.getConstraintViolations(ex));
+        return new ResponseEntity<>(errDetail, null, status);
+    }
+}

usermodel-exceptions-initial/src/main/java/com/lambdaschool/usermodel/models/ErrorDetail.java

@@ -0,0 +1,64 @@
+package com.lambdaschool.usermodel.models;
+
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+public class ErrorDetail {
+
+    private String title;
+    private int status;
+    private String detail;
+    private Date timestamp;
+    private String developerMessage;
+
+    private List<ValidationError> errors = new ArrayList<>();
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public int getStatus() {
+        return status;
+    }
+
+    public void setStatus(int status) {
+        this.status = status;
+    }
+
+    public String getDetail() {
+        return detail;
+    }
+
+    public void setDetail(String detail) {
+        this.detail = detail;
+    }
+
+    public Date getTimestamp() {
+        return timestamp;
+    }
+
+    public void setTimestamp(Date timestamp) {
+        this.timestamp = timestamp;
+    }
+
+    public String getDeveloperMessage() {
+        return developerMessage;
+    }
+
+    public void setDeveloperMessage(String developerMessage) {
+        this.developerMessage = developerMessage;
+    }
+
+    public List<ValidationError> getErrors() {
+        return errors;
+    }
+
+    public void setErrors(List<ValidationError> errors) {
+        this.errors = errors;
+    }
+}

usermodel-exceptions-initial/src/main/java/com/lambdaschool/usermodel/models/User.java

@@ -12,6 +12,7 @@
 import javax.persistence.OneToMany;
 import javax.persistence.Table;
 import javax.validation.constraints.Email;
+import javax.validation.constraints.Size;
 import java.util.ArrayList;
 import java.util.HashSet;
 import java.util.List;
@@ -44,6 +45,7 @@ public class User
      */
     @Column(nullable = false)
     @JsonProperty(access = JsonProperty.Access.WRITE_ONLY)
+    @Size(min = 4, max = 30)
     private String password;
 
     /**

usermodel-exceptions-initial/src/main/java/com/lambdaschool/usermodel/models/ValidationError.java

@@ -0,0 +1,23 @@
+package com.lambdaschool.usermodel.models;
+
+public class ValidationError {
+
+    private String code;
+    private String message;
+
+    public String getCode() {
+        return code;
+    }
+
+    public void setCode(String code) {
+        this.code = code;
+    }
+
+    public String getMessage() {
+        return message;
+    }
+
+    public void setMessage(String message) {
+        this.message = message;
+    }
+}

usermodel-exceptions-initial/src/main/java/com/lambdaschool/usermodel/services/HelperFunctions.java

@@ -0,0 +1,10 @@
+package com.lambdaschool.usermodel.services;
+
+import com.lambdaschool.usermodel.models.ValidationError;
+
+import java.util.List;
+
+public interface HelperFunctions {
+
+    List<ValidationError> getConstraintViolations(Throwable cause);
+}

usermodel-exceptions-initial/src/main/java/com/lambdaschool/usermodel/services/HelperFunctionsImpl.java

@@ -0,0 +1,36 @@
+package com.lambdaschool.usermodel.services;
+
+import com.lambdaschool.usermodel.models.ValidationError;
+import org.springframework.stereotype.Service;
+
+import javax.validation.ConstraintViolation;
+import javax.validation.ConstraintViolationException;
+import java.util.ArrayList;
+import java.util.List;
+
+@Service(value = "helperFunctions")
+public class HelperFunctionsImpl implements HelperFunctions {
+
+    @Override
+    public List<ValidationError> getConstraintViolations(Throwable cause) {
+
+        while ((cause) != null && !(cause instanceof ConstraintViolationException)){
+
+            cause = cause.getCause();
+        }
+        List<ValidationError> listVE = new ArrayList<>();
+
+        if (cause != null){
+            ConstraintViolationException ex= (ConstraintViolationException) cause;
+            for(ConstraintViolation cv : ex.getConstraintViolations()){
+                ValidationError newVe = new ValidationError();
+
+                newVe.setCode(cv.getInvalidValue().toString());
+                newVe.setMessage(cv.getMessage());
+                listVE.add(newVe);
+            }
+        }
+
+        return listVE;
+    }
+}

usermodel-exceptions-initial/src/main/java/com/lambdaschool/usermodel/services/RoleServiceImpl.java

@@ -1,5 +1,6 @@
 package com.lambdaschool.usermodel.services;
 
+import com.lambdaschool.usermodel.exceptions.ResourceNotFoundException;
 import com.lambdaschool.usermodel.models.Role;
 import com.lambdaschool.usermodel.repository.RoleRepository;
 import com.lambdaschool.usermodel.repository.UserRepository;
@@ -8,7 +9,7 @@
 import org.springframework.transaction.annotation.Transactional;
 
 import javax.persistence.EntityExistsException;
-import javax.persistence.EntityNotFoundException;
+
 import java.util.ArrayList;
 import java.util.List;
 
@@ -57,7 +58,7 @@ public List<Role> findAll()
     public Role findRoleById(long id)
     {
         return rolerepos.findById(id)
-                .orElseThrow(() -> new EntityNotFoundException("Role id " + id + " not found!"));
+                .orElseThrow(() -> new ResourceNotFoundException("Role id " + id + " not found!"));
     }
 
     @Override
@@ -70,7 +71,7 @@ public Role findByName(String name)
             return rr;
         } else
         {
-            throw new EntityNotFoundException(name);
+            throw new ResourceNotFoundException(name);
         }
     }
 
@@ -101,7 +102,7 @@ public Role update(long id,
     {
         if (role.getName() == null)
         {
-            throw new EntityNotFoundException("No role name found to update!");
+            throw new ResourceNotFoundException("No role name found to update!");
         }
 
         if (role.getUsers()

usermodel-exceptions-initial/src/main/java/com/lambdaschool/usermodel/services/UserServiceImpl.java

@@ -1,5 +1,6 @@
 package com.lambdaschool.usermodel.services;
 
+import com.lambdaschool.usermodel.exceptions.ResourceNotFoundException;
 import com.lambdaschool.usermodel.models.Role;
 import com.lambdaschool.usermodel.models.User;
 import com.lambdaschool.usermodel.models.UserRoles;
@@ -9,7 +10,7 @@
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
-import javax.persistence.EntityNotFoundException;
+
 import java.util.ArrayList;
 import java.util.List;
 
@@ -34,10 +35,10 @@ public class UserServiceImpl
     private RoleService roleService;
 
     public User findUserById(long id) throws
-            EntityNotFoundException
+            ResourceNotFoundException
     {
         return userrepos.findById(id)
-                .orElseThrow(() -> new EntityNotFoundException("User id " + id + " not found!"));
+                .orElseThrow(() -> new ResourceNotFoundException("User id " + id + " not found!"));
     }
 
     @Override
@@ -65,7 +66,7 @@ public List<User> findAll()
     public void delete(long id)
     {
         userrepos.findById(id)
-                .orElseThrow(() -> new EntityNotFoundException("User id " + id + " not found!"));
+                .orElseThrow(() -> new ResourceNotFoundException("User id " + id + " not found!"));
         userrepos.deleteById(id);
     }
 
@@ -75,7 +76,7 @@ public User findByName(String name)
         User uu = userrepos.findByUsername(name.toLowerCase());
         if (uu == null)
         {
-            throw new EntityNotFoundException("User name " + name + " not found!");
+            throw new ResourceNotFoundException("User name " + name + " not found!");
         }
         return uu;
     }
@@ -89,7 +90,7 @@ public User save(User user)
         if (user.getUserid() != 0)
         {
             userrepos.findById(user.getUserid())
-                    .orElseThrow(() -> new EntityNotFoundException("User id " + user.getUserid() + " not found!"));
+                    .orElseThrow(() -> new ResourceNotFoundException("User id " + user.getUserid() + " not found!"));
             newUser.setUserid(user.getUserid());
         }