em-files | Sequenced file reader and writer through EventMachine
kandi X-RAY | em-files Summary
kandi X-RAY | em-files Summary
em-files solve problem of blocking disk IO when operating with large files. Use [EventMachine][4] for multiplexing reads and writes to small blocks performed in standalone EM ticks. They speed down the file IO operations of sure, but allow running other tasks with them simultaneously (from EM point of view). There is, of sure, question whether this all has sense as EM::defer is available for handling these blocking tasks. But sometimes are situations, in which it’s undesirable to execute them in separate thread.
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Top functions reviewed by kandi - BETA
- Initialize the file .
- Write data to file .
- Open the file
- Closes the native library .
em-files Key Features
em-files Examples and Code Snippets
Community Discussions
Trending Discussions on em-files
QUESTION
I'm trying to set up a solution which includes an EC2 instance with Apache running NodeJS. I've already successfully created a working webserver-instance with a public SSL-certificate from Certifate Manager accessed on port 80 and 443. This server should be able to connect to my other instance but for some reason I keep running into dead-ends and I suspect the solution is not possible...
I've built a working setup using Let's Encrypt certificates but I would love to keep as much as possible in AWS.
Issue: In the LE-solution, I can access the local .pem-files on my server. I can include the local paths to the LE-certificates in the server-setup-file like this:
...ANSWER
Answered 2020-Dec-15 at 20:38As mentioned in comments, certificates created through AWS Certificate Manager can only be used for certain AWS services such as Elastic Load Balancers, not self-managed web servers. What you can do is use a Certificate Manager cert and put it on a load balancer, with your Apache/Node server sitting behind the load balancer in a target group. All connections over the public internet would be HTTPS, but the connection between the load balancer and your app server (going over AWS's internal network) would be plain HTTP.
QUESTION
I am trying to display the thumbnails from harvested items. The settings I have for the harvesting options is Harvest metadata and references to bitstreams (requires ORE support). When looking for the code on how DSpace displays the filenames and file sizes of the bitstreams of the harvested items in simple view, I found that in https://github.com/DSpace/DSpace/blob/dspace-6.1/dspace-xmlui-mirage2/src/main/webapp/xsl/aspect/artifactbrowser/item-view.xsl#L375-L378
...ANSWER
Answered 2020-Apr-18 at 11:06For my future reference, this is what I have made to show the thumbnails for harvested items.
This answer is based on DSpace 5x Mirage2 Theme but it can also be applied to DSpace 6x Mirage2.
In item-view.xsl, locate the block and then insert this code:
QUESTION
My institute recently installed a new proxy server for our network. I am trying to configure my Cygwin environment to be able to run wget and download data from a remote repository.
Browsing the internet I have found two different solutions to my problem, but no one of them seem to work in my case.
The first one I tried was to follow these instructions, so in Cygwin:
...ANSWER
Answered 2020-Feb-03 at 14:31This problem was solved thanks to the suggestion of a User of the community AskUbuntu.
Basically, instead of editing the global configuration file wgetrc, I should have created a new .wgetrc with my proxy configuration in my Cygwin home directory.
In summary:
Step 1 - Create a .wgetrc file;
QUESTION
I have a CSV online which is sometimes updated. I'm opening and reading it with:
...ANSWER
Answered 2019-Dec-11 at 10:26In fact fopen does not seem to be affected by caching, the documentation https://www.php.net/manual/en/function.clearstatcache.php states:
Affected functions include stat(), lstat(), file_exists(), is_writable(), is_readable(), is_executable(), is_file(), is_dir(), is_link(), filectime(), fileatime(), filemtime(), fileinode(), filegroup(), fileowner(), filesize(), filetype(), and fileperms()
QUESTION
I am trying to create the following design
Where the left side is an image followed by a tag with words.
on the right are the menu options which should look like they are clickable. The slashes that separate them should never move change color etc. However "About" "Contact" and "The Future" will eventually look different when hovered over and will take you to different pages on the site.
So when I attempted to create this I made the following HTML and CSS (make sure the window is wide when you run it)
...ANSWER
Answered 2019-Oct-28 at 02:36Answers:
- Float doesn't work with vertical align, read more about it here; CSS Vertical align does not work with float
- UL's have the property
padding-inline-startwhich has a default of 40px and is pushing content to the right. - Max width and Max height properties only specify the limit of a certain element, it doesn't indicate their actual width and height values.
I modified your html to include wrapper divs; classes with left and right. In the right div I placed your rightList which has line-height css property and is an alternative to vertical-align:middle.
QUESTION
I'm building a custom settings form in Drupal 7, with an image upload field. This image field should allow multiple uploads.
After some research I found out you can do this with managed_file and '#attributes' => array('multiple' => 'multiple'). However this doesn't seem to do anything.
This is the code I currently have:
...ANSWER
Answered 2017-Mar-08 at 07:57The multiple option does not seem to be supported. Then again you are using it under the #attributes. This would cause IMO the html element to have an atttribute multiple, but I don't see anything in /modules/file/file.js to pick up on that, so that's presumably why it's not doing anything. You're probably better off using plupload, as suggested here.
QUESTION
I'm trying to create a list all of the file names found in a folder on an FTP server. The full directory is saved in a settings database table along with the login credentials. It is connecting to the FTP area fine, and I can upload/download files to and from it.
This is my code to get the files from the folder.
...ANSWER
Answered 2018-Sep-21 at 05:16Many FTP servers return . and .. entries in a directory listing, similarly to *nix ls -a or Windows dir commands. Those are references to the directory itself and the parent directory, respectively.
You will get those for any directory, even an empty one (sometimes [e.g. on Windows servers] with an exception of the root folder).
If you do not want those, you need to filter them out in your code. What FileZilla does too for sure.
QUESTION
I am trying to SSH to EC2 using JSch Library from Java code. I referred this link in SO How can I use .pem files content as a string in ec2 connection using JSch library and tried couple of things as mentioned below but in vain. Can someone please guide me on how to achieve my objective?
Objective
I have a PEM file like this. I dont want to store my PEM file anywhere in AWS, hence my approach is to extract an equivalent string that I can encode and store in database and decode it from java for passing the parameter to addIdentity method that takes these parameters:
ANSWER
Answered 2018-Jun-25 at 06:42I figured out the answer. Below post gave me a direction.
JSch: addIdentity from private key stored on hdfs
To anyone else who is looking to solve a similar requirement, ensure that you are not stripping off the header, footer information. This took most of my time to debug as most of the blogs/SO posts directed towards stripping those characters. In Java, your string must have the carriage returns else you might get a very different byte array.
QUESTION
I'm currently trying to set up a Confluence (6.6.0) on an Ubuntu Server with Plesk (17.5.3) and Let's-Encrypt-Extension installed.
Confluence itself is up and running, but I am experiencing some issues, when it comes to SSL. Securing the Domain itself is easily done by just taking the "easy road" via the Plesk-Panel One-Click-Installer.
The Certificates will be located at /usr/local/psa/var/modules/letsencrypt/etc/archive//
There are four .pem-files in this directory:
cert1.pemchain1.pemfullchain1.pemprivkey1.pem
But now i need to tell Tomcat, that i have this certificate installed in the server.xml.
Since the Plesk-Let's-Encrypt-Extension saves the files as .pem-files i need to convert them via OpenSSL to be able to use the Java keytool.
I found a nice tutorial about this topic in general right here:
http://robblake.net/post/18945733710/using-a-pem-private-key-and-ssl-certificate-with
When i am trying the following, i get stuck at the very beginning, when i try to execute
...ANSWER
Answered 2017-Dec-13 at 23:26It looks like chain1.pem file from Let's Encrypt is incomplete. In my case it contains only one certificate - the intermediate CA Let's Encrypt Authority X3
Check the contents of this file. In my case there was only one certificate.
QUESTION
I am trying to create gRPC connection with mutual tls following the instruction on this blog Secure gRPC with TLS/SSL, but i don't want to create the certificate and save it to a file on the disk, I want the service itself to create its keys, then the certificate authority key will be taken somewhere else (I am planning using the google pki as the ca).
What i did so far I can create the private/public key pair using rsa, then encode the public key to pem key following some code here Golang : Generate DSA private, public key and PEM files example now i am stock on how to create the certificate using the LoadX509KeyPair. I don't know where to get the value for the second parameter, it needs keyPemBlock in bytes, but the RSA private key is not on bytes.
I would like to ask, is there a much more better way to create a certificate using the RSA, if it is possible?
And also if we can create a certificate using RSA; using the incomplete solution of mine above, where i can get the value for the second parameter of the tls.LoadX509KeyPair?
Thank you
...ANSWER
Answered 2017-May-07 at 05:37If you want to generate your own certificate and private key, you have to do:
1.- Generate private key:
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On a UNIX-like operating system, using your system’s package manager is easiest. However, the packaged Ruby version may not be the newest one. There is also an installer for Windows. Managers help you to switch between multiple Ruby versions on your system. Installers can be used to install a specific or multiple Ruby versions. Please refer ruby-lang.org for more information.
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