How do I analyze log data using AWS CloudWatch Logs Insight and export relevant metrics to AWS CloudWatch Dashboards?

import * as pulumi from "@pulumi/pulumi";
import * as aws from "@pulumi/aws";

// Create a CloudWatch Log Group
const logGroup = new aws.cloudwatch.LogGroup("exampleLogGroup", {
    retentionInDays: 7, // Retain logs for 7 days
});

// Define a CloudWatch Logs Insight Query
const queryDefinition = new aws.cloudwatch.QueryDefinition("exampleQueryDefinition", {
    name: "ExampleQuery",
    queryString: `
        fields @timestamp, @message
        | sort @timestamp desc
        | limit 20
    `,
    logGroupNames: [logGroup.name],
});

// Create a CloudWatch Dashboard
const dashboard = new aws.cloudwatch.Dashboard("exampleDashboard", {
    dashboardName: "ExampleDashboard",
    dashboardBody: pulumi.output(queryDefinition.queryString).apply(queryString => JSON.stringify({
        widgets: [
            {
                type: "log",
                x: 0,
                y: 0,
                width: 24,
                height: 6,
                properties: {
                    query: queryString,
                    region: aws.config.region,
                    title: "Log Insights",
                },
            },
        ],
    })),
});

// Export the dashboard URL
export const dashboardUrl = pulumi.interpolate`https://${aws.config.region}.console.aws.amazon.com/cloudwatch/home?region=${aws.config.region}#dashboards:name=${dashboard.dashboardName}`;