SIS-26: Implemented basic logging

.github/workflows/CI.yml

@@ -66,14 +66,14 @@ jobs:
       #   # Skip tests since they were already run.
       #   run: mvn package -DskipTests
 
-      - name: Save the Jar file test artifact
+      - name: Upload the generated application jar file artifact
         uses: actions/[email protected]
         with:
           name: smart-inventory-0.0.1-SNAPSHOT
           path: target/smart-inventory-0.0.1-SNAPSHOT.jar
           retention-days: 7
 
-      - name: Upload the test artifacts
+      - name: Upload the test report artifacts
         uses: actions/[email protected]
         if: ${{ always() }}
         with:
@@ -83,11 +83,20 @@ jobs:
           if-no-files-found: error
           retention-days: 7
 
-      - name: Upload the HTML report test artifacts
+      - name: Upload the HTML test report artifacts
         uses: actions/[email protected]
         if: ${{ always() }}
         with:
           name: html-test-report
           path: "**/target/site/**"
           if-no-files-found: error
           retention-days: 7
+
+      - name: Upload the application and test log file artifacts
+        uses: actions/[email protected]
+        if: ${{ always() }}
+        with:
+          name: application-and-test-logs
+          path: "**/logs/**"
+          if-no-files-found: error
+          retention-days: 7

.gitignore

@@ -31,4 +31,7 @@ build/
 
 ### VS Code ###
 .vscode/
+
+### Generated Log Files ###
 src/main/java/sg/com/smartinventory/logfile
+logs/**

src/main/java/sg/com/smartinventory/SmartInventoryApplication.java

@@ -1,11 +1,21 @@
 package sg.com.smartinventory;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 
 @SpringBootApplication
 public class SmartInventoryApplication {
+	// Name this according to your class name.
+	private static final Logger app_logger = LoggerFactory.getLogger(SmartInventoryApplication.class);
+
 	public static void main(String[] args) {
+		app_logger.info("Starting SmartInventoryApplication. ");
+
 		SpringApplication.run(SmartInventoryApplication.class, args);
+
+		app_logger.info("Exiting SmartInventoryApplication. ");
 	}
 }

src/main/resources/application.properties

@@ -1,11 +1,14 @@
 spring.application.name=smart-inventory
 
+# Server Configuration. 
 # The default server port is 8080. 
 server.port=9090
+
+# Database Configuration. 
 # PostgreSQL
 spring.datasource.url=jdbc:postgresql://localhost:5432/smart_inventory
-# for WSL, use postgres
-# for Mac, use your Mac username
+# For WSL, use postgres. 
+# For Mac, use your Mac username. 
 spring.datasource.username=postgres
 # Password can be blank if we set it to trust in pg_hba.conf
 spring.datasource.password=
@@ -14,6 +17,22 @@ spring.jpa.database-platform=org.hibernate.dialect.PostgreSQLDialect
 spring.jpa.hibernate.ddl-auto=create
 # This can be used to update tables. 
 # spring.jpa.hibernate.ddl-auto=update
+
+# Logging configuration. 
+# Application logging configuration. 
+# logging.level.root=INFO
+# logging.file.name=logs/application.log
+# Database logging configuration. 
+# The Spring/Hibernate classes, which generate SQL statements and set the parameters, already contain the code for logging them. 
+# However, the level of those log statements is set to DEBUG and TRACE respectively, which is lower than the default level in Spring Boot — INFO. 
+# By adding these properties, we are just setting those loggers to the required level. 
+# For logging statements. 
+# logging.level.org.springframework.jdbc.core.JdbcTemplate=DEBUG
+# For logging parameters of prepared statements. 
+# logging.level.org.springframework.jdbc.core.StatementCreatorUtils=TRACE
+# Set up a profile-specific configuration for tests. 
+# logging.config=classpath:logback-testloglevel.xml
+
 # SpringDoc Configuration. 
 # The OpenAPI descriptions are at /v3/api-docs, which is the default path: http://localhost:8080/v3/api-docs. 
 # For a custom path of the OpenAPI documentation in Json format, 

src/main/resources/logback-spring.xml

@@ -0,0 +1,68 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <!-- Define a common variable -->
+    <property name="AppLogPath" value="./logs" />
+    <!-- Define a Console Appender -->
+    <appender name="Console" class="ch.qos.logback.core.ConsoleAppender">
+        <!-- Define the log message format -->
+        <encoder>
+            <pattern>
+                %d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+    <!-- Define a Console2 Appender -->
+    <appender name="Console2" class="ch.qos.logback.core.ConsoleAppender">
+        <!-- Define the log message format -->
+        <layout class="ch.qos.logback.classic.PatternLayout">
+            <pattern>
+                %black(%d{ISO8601}) %highlight(%-5level) [%blue(%t)] %yellow(%C{1.}):
+                %msg%n%throwable
+            </pattern>
+        </layout>
+    </appender>
+    <!-- Define a File Appender -->
+    <appender name="File" class="ch.qos.logback.core.FileAppender">
+        <!-- Specify path to log file -->
+        <!-- <file>logs/application.log</file> -->
+        <file>${AppLogPath}/application.log</file>
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
+        </encoder>
+    </appender>
+    <appender name="RollingFile"
+        class="ch.qos.logback.core.rolling.RollingFileAppender">
+        <file>${AppLogPath}/application.log</file>
+        <encoder
+            class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
+            <pattern>%d %p %C{1.} [%t] %m%n</pattern>
+        </encoder>
+        <rollingPolicy
+            class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
+            <!-- Rollover daily and when the file reaches 10 MegaBytes -->
+            <fileNamePattern>${AppLogPath}/archived/spring-boot-logger-%d{yyyy-MM-dd}.%i.log
+            </fileNamePattern>
+            <timeBasedFileNamingAndTriggeringPolicy
+                class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
+                <maxFileSize>10MB</maxFileSize>
+            </timeBasedFileNamingAndTriggeringPolicy>
+        </rollingPolicy>
+    </appender>
+    <!-- Set root log level to "INFO" -->
+    <root level="info">
+        <!-- Reference the "Console" appender for console output -->
+        <appender-ref ref="Console" />
+        <!-- <appender-ref ref="Console2" /> -->
+        <!-- Reference the "File" appender for file output -->
+        <appender-ref ref="File" />
+        <!-- Reference the "RollingFile" appender for file output -->
+        <!-- <appender-ref ref="RollingFile" /> -->
+    </root>
+    <!-- LOG "sg.com.smartinventory*" at "TRACE" level -->
+    <!--
+    <logger name="sg.com.smartinventory" level="trace" additivity="false">
+        <appender-ref ref="RollingFile" />
+        <appender-ref ref="Console" />
+    </logger>
+    -->
+</configuration>

src/test/java/sg/com/smartinventory/controllers/CustomerControllerTest.java

@@ -4,7 +4,8 @@
 
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
-
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
 import org.springframework.boot.test.context.SpringBootTest;
@@ -15,6 +16,7 @@
 
 import com.fasterxml.jackson.databind.ObjectMapper;
 
+import sg.com.smartinventory.SmartInventoryApplication;
 import sg.com.smartinventory.entities.Customer;
 
 @SpringBootTest
@@ -26,9 +28,14 @@ public class CustomerControllerTest {
         @Autowired
         private ObjectMapper objectMapper;
 
+        // Name this according to your class name.
+        private static final Logger test_logger = LoggerFactory.getLogger(CustomerControllerTest.class);
+
         @DisplayName("Create customer")
         @Test
         public void createCustomerTest() throws Exception {
+                test_logger.info("Starting test: createCustomerTest. ");
+
                 // Step 1: Create a Customer object
                 Customer newCustomer = Customer.builder().firstName("Jackie").lastName("Chan").country("Hong Kong")
                                 .address("123 HK St")
@@ -48,5 +55,7 @@ public void createCustomerTest() throws Exception {
                                 .andExpect(content().contentType(MediaType.APPLICATION_JSON))
                                 .andExpect(jsonPath("$.firstName").value("Jackie"))
                                 .andExpect(jsonPath("$.lastName").value("Chan"));
+
+                test_logger.info("Ending test: createCustomerTest. ");
         }
 }

src/test/resources/application-logging-test.properties

@@ -0,0 +1,6 @@
+# Test logging configuration. 
+# logging.config=classpath:logback-testloglevel.xml
+
+# Add a Spring profile to our test by using the ActiveProfiles annotation, for example @ActiveProfiles("logging-test"). 
+# logging.level.sg.com.smartinventory.testloglevel=TRACE
+# logging.level.root=ERROR

src/test/resources/logback-test.xml

@@ -0,0 +1,67 @@
+<configuration>
+    <include resource="/org/springframework/boot/logging/logback/base.xml" />
+    <!-- Define a common variable -->
+    <property name="TestLogPath" value="./logs" />
+    <appender name="Console" class="ch.qos.logback.core.ConsoleAppender">
+        <!-- Define the log message format -->
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+    <appender name="Console2" class="ch.qos.logback.core.ConsoleAppender">
+        <!-- Define the log message format -->
+        <layout class="ch.qos.logback.classic.PatternLayout">
+            <pattern>
+                %black(%d{ISO8601}) %highlight(%-5level) [%blue(%t)] %yellow(%C{1.}):
+                %msg%n%throwable
+            </pattern>
+        </layout>
+    </appender>
+    <!-- Define a File Appender -->
+    <appender name="File" class="ch.qos.logback.core.FileAppender">
+        <!-- Specify path to log file -->
+        <!-- <file>logs/test.log</file> -->
+        <file>${TestLogPath}/test.log</file>
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
+        </encoder>
+    </appender>
+    <appender name="RollingFile"
+        class="ch.qos.logback.core.rolling.RollingFileAppender">
+        <file>${TestLogPath}/test.log</file>
+        <encoder
+            class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
+            <pattern>%d %p %C{1.} [%t] %m%n</pattern>
+        </encoder>
+        <rollingPolicy
+            class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
+            <!-- Rollover daily and when the file reaches 10 MegaBytes -->
+            <fileNamePattern>${TestLogPath}/archived/spring-boot-logger-%d{yyyy-MM-dd}.%i.log
+            </fileNamePattern>
+            <timeBasedFileNamingAndTriggeringPolicy
+                class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
+                <maxFileSize>10MB</maxFileSize>
+            </timeBasedFileNamingAndTriggeringPolicy>
+        </rollingPolicy>
+    </appender>
+    <!-- Set root log level to "ERROR" -->
+    <root level="error">
+        <!-- Reference the "Console" appender for console output -->
+        <appender-ref ref="Console" />
+        <!-- <appender-ref ref="Console2" /> -->
+        <!-- Reference the "File" appender for file output -->
+        <appender-ref ref="File" />
+        <!-- Reference the "RollingFile" appender for file output -->
+        <!-- <appender-ref ref="RollingFile" /> -->
+    </root>
+    <logger name="sg.com.smartinventory.testloglevel" level="debug" />
+    <!--
+    <springProfile name="logback-test1">
+        <logger name="sg.com.smartinventory.testloglevel" level="info" />
+    </springProfile>
+    <springProfile name="logback-test2">
+        <logger name="sg.com.smartinventory.testloglevel" level="trace" />
+    </springProfile>
+    -->
+</configuration>