Logging vanuit Java

import io.opentelemetry.api.GlobalOpenTelemetry;
import io.opentelemetry.api.logs.Logger;
import io.opentelemetry.api.logs.LoggerProvider;
import io.opentelemetry.api.logs.Severity;

public class MyApplication {
    public void logMessages() {
        // Get the logger from the global logger provider
        LoggerProvider loggerProvider = GlobalOpenTelemetry.getLoggerProvider();
        Logger logger = loggerProvider.get("my-app");

        // Log a message
        logger.logRecordBuilder()
            .setSeverity(Severity.INFO)
            .setBody("Log message line")
            .emit();
    }
}

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.ThreadContext;
import org.apache.logging.log4j.message.StructuredDataMessage;

public class MyService {
    private static final Logger logger = LogManager.getLogger(MyService.class);

    public void processOrder(String orderId) {
        // This will be shown as a tag in AppSignal for all log lines
        ThreadContext.put("order_id", orderId);

        logger.info("Processing order");

        StructuredDataMessage structuredMessage = new StructuredDataMessage(
            "processing_items", // ID (not shown in AppSignal)
            String.format("Processing items in order"), // Message
            "order" // Type (not shown in AppSignal)
        );

        // This will be shown as a tag in AppSignal for this log line
        structuredMessage.put("item_count", 123);
        logger.info(structuredMessage);

        ThreadContext.clearAll();
    }
}

import java.util.logging.Logger;
import java.util.logging.Level;

public class MyApplication {
    private static final Logger logger = Logger.getLogger(MyApplication.class.getName());

    public void doSomething() {
        logger.info("Application started");
        logger.log(Level.WARNING, "This is a warning message");
        logger.severe("This is an error message");
    }
}

import io.opentelemetry.api.GlobalOpenTelemetry;
import io.opentelemetry.api.logs.Logger;
import io.opentelemetry.api.logs.LoggerProvider;
import io.opentelemetry.api.logs.Severity;

public class MyApplication {
    public void sendLogs() {
        // Get the logger from the global logger provider
        LoggerProvider loggerProvider = GlobalOpenTelemetry.getLoggerProvider();
        Logger logger = loggerProvider.get("my-app");

        // Different severity levels
        logger.logRecordBuilder()
            .setSeverity(Severity.WARN)
            .setBody("Something went wrong")
            .emit();

        logger.logRecordBuilder()
            .setSeverity(Severity.INFO)
            .setBody("Action completed successfully")
            .emit();

        logger.logRecordBuilder()
            .setSeverity(Severity.ERROR)
            .setBody("Database connection failed")
            .emit();
    }
}

import io.opentelemetry.api.GlobalOpenTelemetry;
import io.opentelemetry.api.common.AttributeKey;
import io.opentelemetry.api.common.Attributes;
import io.opentelemetry.api.logs.Logger;
import io.opentelemetry.api.logs.LoggerProvider;
import io.opentelemetry.api.logs.Severity;

public class InvoiceService {
    public void generateInvoice(Customer customer) {
        LoggerProvider loggerProvider = GlobalOpenTelemetry.getLoggerProvider();
        Logger logger = loggerProvider.get("invoice_helper");

        logger.logRecordBuilder()
            .setSeverity(Severity.INFO)
            .setBody("Generating invoice for customer")
            .setAllAttributes(Attributes.of(
                AttributeKey.stringKey("customer_id"), customer.getId()
            ))
            .emit();
    }
}