Method to cache WSDL file programmatically

[manuman94]

Hi!
I've been working on a testing framework and I'm using wsdlrdr to parse the SOAP API definition in our test project.

I would need a method to store the WSDL in cache programmatically based on promises so I can wait until the document is completely downloaded in cache directory.

I have an approach:

/**
     * Wait for the WSDL content. Checks for the cached file and 
     * if t doesn't exist downloads and stores it in cache folder.
     */
    waitForWsdlReady() {
        return new Promise((resolve) => {
            const params = {
                host: WsConfig.SOAP_HOST,
                path: WsConfig.SOAP_PATH,
                wsdl: WsConfig.SOAP_WSDL,
            };
            const opts = { secure: WsConfig.SOAP_SECURE, failOnWrongContentType: false, };
            wsdlrdr.getCachedWsdl(params, opts)
                .then((wsdl) => {
                    // return cached wsdl if available
                    if (wsdl !== null) {
                        console.log('waitForWsdlReady - Already stored WSDL');
                        resolve(wsdl);
                    }

                    // create a params copy
                    const paramsCopy = Object.assign({}, params, {
                        path: params.wsdl
                    });

                    // refresh wsdl, save to cache
                    return wsdlrdr.doGetRequest(paramsCopy, opts)
                        .then((res) => {
                            if (res.response.statusCode !== 200) {
                                throw new Error(`fail to get wsdl: ${res.response.statusMessage}`);
                            }

                            const contentType = res.response.headers['content-type'];
                            if (contentType.indexOf('xml') === -1 &&
                                contentType.indexOf('wsdl') === -1) {
                                if (opts.failOnWrongContentType === void 0 ||
                                    opts.failOnWrongContentType === true) {
                                    throw new Error('no wsdl/xml response');
                                } else {
                                    console.error('no wsdl/xml as content-type');
                                }
                            }

                            console.log('waitForWsdlReady - Caching WSDL');
                            wsdl.saveWsdlToCache(params, res.body).then(() => {
                                resolve();
                            });
                        });
                });
        });
    }

Notice that I'm not resolving the promise until saveWsdlToCache has ended.

Thank you for providing such as great library. Greetings!