Method request_driver_version

rust/src/chrome.rs:326–383

(&mut self)

    }

    fn request_driver_version(&mut self) -> Result<String, Error> {
        let major_browser_version_binding = self.get_major_browser_version();
        let major_browser_version = major_browser_version_binding.as_str();
        let cache_path = self.get_cache_path()?;
        let mut metadata = get_metadata(self.get_logger(), &cache_path);

        match get_driver_version_from_metadata(
            &metadata.drivers,
            self.driver_name,
            major_browser_version,
        ) {
            Some(driver_version) => {
                self.log.trace(format!(
                    "Driver TTL is valid. Getting {} version from metadata",
                    &self.driver_name
                ));
                Ok(driver_version)
            }
            _ => {
                self.assert_online_or_err(OFFLINE_REQUEST_ERR_MSG)?;

                let major_browser_version_int =
                    major_browser_version.parse::<i32>().unwrap_or_default();
                let driver_version = if self.is_browser_version_stable()
                    || major_browser_version.is_empty()
                    || self.is_browser_version_unstable()
                {
                    // For discovering the latest driver version, the CfT endpoints are also used
                    self.request_latest_driver_version_from_online()?
                } else if !major_browser_version.is_empty()
                    && major_browser_version_int < MIN_CHROMEDRIVER_VERSION_CFT
                {
                    // For old versions (chromedriver 114-), the traditional method should work:
                    // https://chromedriver.chromium.org/downloads
                    self.request_driver_version_from_latest(
                        &self.create_latest_release_with_version_url(),
                    )?
                } else {
                    // As of chromedriver 115+, the metadata for version discovery are published
                    // by the "Chrome for Testing" (CfT) JSON endpoints:
                    // https://googlechromelabs.github.io/chrome-for-testing/
                    self.request_good_driver_version_from_online()?
                };

                let driver_ttl = self.get_ttl();
                if should_cache_driver_version(driver_ttl, major_browser_version, &driver_version) {
                    metadata.drivers.push(create_driver_metadata(
                        major_browser_version,
                        self.driver_name,
                        &driver_version,
                        driver_ttl,
                    ));
                    write_metadata(&metadata, self.get_logger(), cache_path);
                }
                Ok(driver_version)
            }
        }
    }