oci java sdk get log from logging service by a certain service

To retrieve logs from the Logging service in Oracle Cloud Infrastructure (OCI) using the Java SDK, you can use the LoggingClient class and its listLogs method. Here's an example:

import com.oracle.bmc.logging.LoggingClient;
import com.oracle.bmc.logging.model.Log;
import com.oracle.bmc.logging.requests.ListLogsRequest;
import com.oracle.bmc.logging.responses.ListLogsResponse;
import com.oracle.bmc.logging.model.LogSummary;
import com.oracle.bmc.identity.IdentityClient;
import com.oracle.bmc.identity.requests.ListServicesRequest;
import com.oracle.bmc.identity.responses.ListServicesResponse;
import com.oracle.bmc.identity.model.Service;
import com.oracle.bmc.identity.model.Tag;

import java.util.List;

public class LoggingExample {

    public static void main(String[] args) {
        String compartmentId = "your-compartment-id";
        String serviceName = "your-service-name";

        // Create a LoggingClient instance
        LoggingClient loggingClient = new LoggingClient(provider);

        // Retrieve the service ID based on the service name
        String serviceId = getServiceId(serviceName);

        // Create a ListLogsRequest with the compartment ID and service ID
        ListLogsRequest listLogsRequest = ListLogsRequest.builder()
                .compartmentId(compartmentId)
                .serviceId(serviceId)
                .build();

        // Retrieve the logs using the ListLogsRequest
        ListLogsResponse listLogsResponse = loggingClient.listLogs(listLogsRequest);

        // Iterate over the logs
        List<LogSummary> logSummaries = listLogsResponse.getItems();
        for (LogSummary logSummary : logSummaries) {
            // Retrieve the log details using the log ID
            Log log = loggingClient.getLog(logSummary.getId()).getLog();

            // Process the log as needed
            System.out.println(log);
        }

        // Close the LoggingClient instance
        loggingClient.close();
    }

    // Helper method to retrieve the service ID based on the service name
    private static String getServiceId(String serviceName) {
        // Create an IdentityClient instance
        IdentityClient identityClient = new IdentityClient(provider);

        // Create a ListServicesRequest with the compartment ID
        ListServicesRequest listServicesRequest = ListServicesRequest.builder()
                .compartmentId(compartmentId)
                .build();

        // Retrieve the services using the ListServicesRequest
        ListServicesResponse listServicesResponse = identityClient.listServices(listServicesRequest);

        // Iterate over the services and find the matching service name
        List<Service> services = listServicesResponse.getItems();
        for (Service service : services) {
            if (service.getDisplayName().equals(serviceName)) {
                // Return the service ID
                return service.getId();
            }
        }

        // Return null if service not found
        return null;
    }
}

Make sure to replace your-compartment-id with the actual compartment ID where the logs are stored, and your-service-name with the name of the service you want to retrieve logs for.

Note that you also need to configure the necessary authentication provider (e.g., using a configuration file or environment variables) before creating the LoggingClient and IdentityClient instances