使用Swift后端框架Perfect做一个文件上传服务器

最近App总有些奇奇怪怪的偶现bug，测试同学不堪其扰，需要我们尽快排查，iOS查看日志没有安卓那么方便，又不想被满屏的NSLog（有些第三方库打印超多日志）遮挡视线，好在我们集成了CocoaLumberjack，可以用它将记录下来存入文件，然后查看或导出，最初的想法是直接做个日志管理的界面，用个textView展示日志，但是发现用的次数多了之后，日志量猛增，在手机这种小屏幕上查看效率堪忧，还是放在电脑上，字体大小随便调，更有搜索这种神器级别的功能，查找bug不是梦。

但是每次导出文件还要连接电脑，好麻烦，于是幻想能无线传输该多好，测试同学发现问题，直接点击一键上传日志，然后。

正好一直想用Swift做后端练练手，说干就干，加班走起。

服务端代码：

private func uploadHandler(request: HTTPRequest, response: HTTPResponse) {

    // create uploads dir to store files
    let fileDir = Dir(Dir.workingDir.path + "files")
    do {
        try fileDir.create()
    } catch {
        print(error)
    }

    var code = 400

    // Grab the fileUploads array and see what's there
    // If this POST was not multi-part, then this array will be empty

    if let uploads = request.postFileUploads, uploads.count > 0 {
        // Create an array of dictionaries which will show what was uploaded
        var ary = [[String:Any]]()

        for upload in uploads {
            ary.append([
                "fieldName": upload.fieldName,
                "fieldValue": upload.fieldValue
                ])

            if upload.tmpFileName.count == 0 {
                continue
            }

            // move file
            let thisFile = File(upload.tmpFileName)
            do {

                let _ = try thisFile.moveTo(path: fileDir.path + upload.fieldName, overWrite: true)
                print("upload file success: \(upload.fieldName)")
                code = 200

            } catch {
                print(error)
            }
        }

        do {

            let data = try JSONSerialization.data(withJSONObject: ary, options: JSONSerialization.WritingOptions.prettyPrinted)
            let strJson = String.init(data: data, encoding: .utf8)

            Log.info(message: strJson!)
        } catch {
            Log.info(message: "\(error)")
        }
    }

    let dict = [ "code": "\(code)", "msg": "success" ]

    do {
        try response.setBody(json: dict)
    } catch {
        print("response error: \(error)")
    }

    response.completed(status: .ok)
}

客户端代码：

- (void)uploadLogFilesToUrl:(NSString *)url completeBlock:(void (^)(void))completeBlock {

    kWeakSelf(self);

    NSString *path = self.logPath;
    NSString *fileName = self.logName;

    if (fileName) {

        NSString *filePath = [path stringByAppendingPathComponent:fileName];
        NSDictionary *tmpDic = [WVRAppModel sharedInstance].commenParams;
        NSMutableDictionary *muDict = [NSMutableDictionary dictionaryWithDictionary:tmpDic];
        muDict[@"deviceId"] = [WVRUserModel sharedInstance].deviceId;
        muDict[@"fileList"] = self.logList;
        muDict[@"buildVer"] = kBuildVersion;
        muDict[@"deviceModel"] = [WVRDeviceModel deviceModel];

        NSString *logName = [NSString stringWithFormat:@"%@_%@_%@", muDict[@"deviceModel"], muDict[@"deviceId"], [NSDate chinaDate]];

        AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
        [manager POST:url parameters:muDict constructingBodyWithBlock:^(id<AFMultipartFormData>  _Nonnull formData) {

            [formData appendPartWithFileData:[NSData dataWithContentsOfFile:filePath] name:logName fileName:fileName mimeType:@"text/plain"];

        } progress:^(NSProgress * _Nonnull uploadProgress) {

        } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {

            if (completeBlock) {
                completeBlock();
            }
        } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {

            NSLog(@"%@", error);
        }];
    }
}

之后有空了，还可以研究以下使用Perfect后端进行APNS消息推送。这样有日志上传好之后，就可以收到消息推送，再也不用去翻看文件夹或者盯着控制台日志啦。