WebDriverSetup.java 文件源码

private static Container createContainer(int uiPort, File testDir) throws Exception {
    File adminFile = new File(testDir, "admin.json");
    Files.asCharSink(adminFile, Charsets.UTF_8).write("{\"web\":{\"port\":" + uiPort + "}}");
    Container container;
    if (Containers.useJavaagent()) {
        container = new JavaagentContainer(testDir, true, ImmutableList.of());
    } else {
        container = new LocalContainer(testDir, true, ImmutableMap.of());
    }
    // wait for UI to be available (UI starts asynchronously in order to not block startup)
    CloseableHttpClient httpClient = HttpClients.custom()
            .setRedirectStrategy(new DefaultRedirectStrategy())
            .build();
    Stopwatch stopwatch = Stopwatch.createStarted();
    Exception lastException = null;
    while (stopwatch.elapsed(SECONDS) < 10) {
        HttpGet request = new HttpGet("http://localhost:" + uiPort);
        try (CloseableHttpResponse response = httpClient.execute(request);
                InputStream content = response.getEntity().getContent()) {
            ByteStreams.exhaust(content);
            lastException = null;
            break;
        } catch (Exception e) {
            lastException = e;
        }
    }
    httpClient.close();
    if (lastException != null) {
        throw new IllegalStateException("Timed out waiting for Glowroot UI", lastException);
    }
    return container;
}