testcontainers/build/wait-strategies/health-check-wait-strategy.js

Testcontainers is a NodeJS library that supports tests, providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.HealthCheckWaitStrategy = void 0;
const wait_strategy_1 = require("./wait-strategy");
const common_1 = require("../common");
const container_runtime_1 = require("../container-runtime");
class HealthCheckWaitStrategy extends wait_strategy_1.AbstractWaitStrategy {
    async waitUntilReady(container) {
        common_1.log.debug(`Waiting for health check...`, { containerId: container.id });
        const client = await (0, container_runtime_1.getContainerRuntimeClient)();
        const containerEvents = await client.container.events(container, ["health_status"]);
        return new Promise((resolve, reject) => {
            const timeout = setTimeout(() => {
                const message = `Health check not healthy after ${this.startupTimeout}ms`;
                common_1.log.error(message, { containerId: container.id });
                containerEvents.destroy();
                reject(new Error(message));
            }, this.startupTimeout);
            const onTerminalState = () => {
                clearTimeout(timeout);
                containerEvents.destroy();
                common_1.log.debug(`Health check wait strategy complete`, { containerId: container.id });
            };
            containerEvents.on("data", (data) => {
                const parsedData = JSON.parse(data);
                const status = parsedData.status.split(":").length === 2
                    ? parsedData.status.split(":")[1].trim() // Docker
                    : parsedData.HealthStatus; // Podman
                if (status === "healthy") {
                    resolve();
                    onTerminalState();
                }
                else if (status === "unhealthy") {
                    const message = `Health check failed: ${status}`;
                    common_1.log.error(message, { containerId: container.id });
                    reject(new Error(message));
                    onTerminalState();
                }
            });
        });
    }
}
exports.HealthCheckWaitStrategy = HealthCheckWaitStrategy;
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