It really needs a separate protocol, as Aleph has Yes, I totally agree - there's definitely real power there
In part 2 of this series we built upon the foundations we created in part 1 to generate a Connect descriptor.
That descriptor specifies, among other things, the API that Bitbucket should call on key events in our repository and add-on lifecycle. Called on installation to an account and provides a shared key. Called on uninstall from an account.
Called on repository events such as pushes. Called to be inserted into a webpanel in the repository. This provides the add-on with some key information the it needs to store for future use, including a shared secret to verify future calls and authorize calls to the Bitbucket API, a unique per-installation key, and information about the installing user.
Obviously, we need to store some of this information across restarts of our add-on, so we need some storage. In a full production environment we'd probably use a database of some sort for example the Docker Hub add-on uses Amazon's DynamoDB ; however for this example, we can just abuse Clojure's ability to dump and read runtime data in its EDN format.
Let's create a new storage. This is a very simplistic implementation and should not be used in a real add-on. In particular, it's not multi-tenanted as it doesn't separate storage per installation via the clientKey field.
But it will do for simple illustration purposes. Now we have something to do with the information sent to us on installation let's handle the API call. Bitbucket sends the installation context as JSON in the body of a POST to the endpoint; we'd prefer that the information was converted into Clojure's internal data structures.
There are libraries to do this, but as it's such a common operation Ring provides a handy wrapper that will do this for us. To enable this, just import wrap-json-body from ring. Then we add the endpoint to the defroutes section: While not a major issue in our toy implementation we generally would like to clear unneeded data out of our database, and it is generally good practice to not store user information unnecessarily.
However we don't want to allow just anybody to make an uninstall call; in fact, we'd like all our API to be authenticated as coming from Bitbucket from now on. Luckily that's what the installation information above is for, in particular the sharedSecret entry in the context.
Obviously, we'd like this context to be loaded on future runs of our add-on, so let's load it on startup in handler. There are already Clojure JWT libraries availablebut Atlassian's Connect defines an extension to the standard to add additional verification of query parameters.
However as part of writing the Docker Hub Bitbucket add-on I produced a library to implement this extension, along with some helper operations. This allows to define a simple Ring-style wrapper that will authenticate a request and either deny access or forward onto another handler: The webhook is called for any key events in the repository, for example on a push event.
We're not going to actually do anything with this information for our plugin, but it's useful to see what we receive from Bitbucket. So we'll create a function to pretty-print the received data: There will also code appearing there for the later parts as I work on them if you want to skip ahead.
Next time Now we've handled the Bitbucket to add-on aspects of the API we need to address the more complex issue of retrieving information from Bitbucket and creating user-visible content from it.
We'll use both of these techniques to display some key information in an embedded component on the Bitbucket repository page. Tune in next time for more Clojure goodness!write large data structures as EDN to disk in clojure.
clojure,edn. You can control the number of items in a collection that are printed via *print-length* Consider using spit instead of manually opening the writer and pr-str instead of manually binding to *out*.
It just works for 90% of the use cases. Writing Macros. When I was 18, macros allow you to modify Clojure in ways that just aren’t possible with other languages.
With macros, you can extend Clojure to suit your problem space, building up the language.
once ingested, would temporarily give me the power and temperament of an ’80s fitness guru, freeing me from a prison of. Aug 15, · Unravel is a new REPL client focused on human interaction. Instead of relying on nREPL, it communicates using unrepl, a simple protocol based on streams of EDN values.
WRITE A POST. Sign In/Up Via Twitter Via GitHub All about r-bridal.com CLJS ️'s Lambda Mark Aiken Dec 8 ' #clojure #clojurescript #lambda #serverless.
What is Clojure and why do you care? Because every post about Clojure or Clojurescript (CLJS) has to explain what Clojure(script) is and why you should use it: add r-bridal.com to. Socket Server. The Socket Server will be a general facility available as part of the Clojure runtime, initiated one or more times based on configuration.