AsyncAPI Hacktoberfest Office Hours, 13 Oct 2020

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From YouTube: #Hacktoberfest Office Hours by #AsyncAPI - 13.10

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More details https://www.asyncapi.com/blog/hacktoberfest-2020

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Good morning,.

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uh Let me just make sure we are live on twitter at.

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Yep we are live.

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So welcome on the this time it's kind of usual office hours, because it's third office hour in row, uh it's tuesday 13th of october um with special guests- and you can see that dogs and cats love each other because they don't fight.

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So we're here because of the hacktoberfest I'm joining these live streams. In case you have some questions to the issues that we prepared for the oktoberfest.

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You can also join us here, live if you want just. Let us know in the chat we're going to send you a link.

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So we're gonna wait a few minutes before I present an update on oktoberfest and how we're doing.

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Yeah anyway, I will be here like five or ten minutes and I'll leave you here today.

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How about the call at six would you join.

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um Yes, something so yeah.

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Hey again come on stop.

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This is funny we can do this more often just appearing live with our pets here.

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I have no choice. She just comes over whenever she wants.

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I can close the door but yeah. I love them here around.

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I don't have office yet so unless I go to the toilet, I can close my server.

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That will be too much for a single.

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Slide, uh okay, I'll say you retreated. Let me retreat.

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Oh yeah, let me also retweet stream.

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So I changed the settings in twitch so this time the it should save.

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There I'll have to wait um after this after in five minutes or so I'll have to wait um for a long time and I'll be boring bored because I'll go to the doctors and I'll be bored they're waiting the in the doctor so I'll be watching the live stream.

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Phone there's gonna be a lot of fun to watch.

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Yeah, okay, it's gonna be better than just waiting there, and on top of that, I I couldn't have breakfast today so.

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It's it's my monday today, it's monday for me.

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I couldn't have not even a single coffee or anything, nothing.

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What was the holiday that you had yesterday? Because in my calendar it was shown as hispanic day was the day independence day or.

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Not independence, actually the opposite. It's the it's the day where uh supposedly columbus, christopher columbus and uh I'm not sure. If it's it's not that day, it's when we conquered or started the conqueror of, uh I prefer to say where spain invaded uh america basically.

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ah Because it was columbus day yesterday as well in states.

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Yeah so then it's the same day. Okay, I wasn't.

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um So yeah, um that's why and um so it's hispanic day, because yeah so most of the most of the invasion was done by spain by spain. The spanish people right there, english too french too, but you know to the north and not the whole north, just uh just um what today is like uh west east half, east united states and canada right I mean the english and french.

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It's easy to to know. If you look at language portuguese, as well in brazil,.

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So there's not much to celebrate yeah, so there's much not much to celebrate. Knowing the history.

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Not for me, but here people celebrate um also it's the it's saint pillar. You know pilar is a name in spain. It's a very common name. Actually is the name of eva's mom, so my mother-in-law so so yeah. We have to celebrate that. It's saint, I don't know. How would you say this in english? Be that I don't think it exists, translation or something it's a name.

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Very interesting also means pillar. You know, like pillar, also means that.

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And yeah so not much to celebrate from my side but yeah.

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But at least you have a day of.

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Still, bank holiday, you have to take holidays. Of course,.

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Also someday, I have to investigate where bank the term bank holiday is coming from, because I like it and it's public holiday is the same thing. Maybe.

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I like to mention banks for holidays. You know.

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You don't like banks, they give money. They're.

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Cool they give money, yeah yeah, they give money.

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So with this good beginning, let's start um yeah.

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Let's not start, let's not enter this weird area.

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um So we are here again. uh Let me remind you, we already have four viewers so um we're here here because of oktoberfest I've just pasted a link in the chat um to a blog post, where we explain uh why we joined the octoberfest and how we did it, and this live stream is mainly for oktoberfest participants, but but not only so um last time we during a stream. Most of the questions were about asking api and the spec which- and I answered them.

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So it's not that I said no, you cannot ask those questions um so yeah. You can ask those questions as well. It's um it's just one hour with us for you, um um so among all the different things that you can find in blog posts, we have an excel sheet, um google sheet, actually uh that we maintain, where we maintain all the the list of all the issues uh with the with information about the difficulty level to solve a specific issue.

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So for your information we have 13th of october, which is still not even half of the month and out from 70 8 issues.

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36 are already.

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Merged so prs were created, reviewed, fixed and merged. So almost half of the issues is already solved which looks good.

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That's a big accomplishment, I would say yeah.

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But there are still many issues, so you can have a look. I will also send a link to this to the.

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Oh, so the twitter users did not get the link because it was filtered out by the tool that is periscope. It's a company that is was doing streaming and was acquired by twitter uh to support streaming on twitter and they filtered out the link. So you just have to go to youtube, maybe or or twitch if you need it or just go to the blog post and in the blog.

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Do it manually for.

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So whoever is watching just drop some comments, so we know we're not really alone with our pets.

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But I'm gonna leave you alone, so yeah gotta go now, okay and just to say that thanks thanks man for the great job you did and um and thanks everyone contributing like this is this is really cool. I wasn't expecting that. To be honest, uh it's it's such a good thing. This hackable fest uh celebration, let's say, and uh I'm loving it so far, uh even though there was this noise about.

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About uh you know if, if it's full of spam and all this stuff, like lucas saying I mean it's yeah, there's there's some spam sometimes, but I mean there was some spam in the beginning, but I don't think we got any any part of the spam right. Only just.

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There were just two pr's.

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Yeah so yeah so.

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That's nothing to.

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Complain to be honest, like uh the cute, the good things really um I'll, do the the spam once right, like by my fart, so yeah so good stuff thanks man.

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Cheers mike.

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Have fun bye bye then.

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And one second from me: I need to let my dog out, because she's gonna be at my.

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Nice front left and all the viewers left.

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You gotta know who's the star in the project.

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You have still 45 minutes to ask me any question.

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Okay, so if there are no questions so far I'll, do it the same way? I was doing it last time, so I'll just jump to usual work and from time to time, I'm gonna check the chat.

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If there are any questions, because I don't have an office yet I mean like office at my home office, um which means I don't have a place for extra monitors.

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I'm gonna open the stream on my mobile.

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Yeah to see if, like on real time, if there are any questions.

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Let me write test okay test message showed up, which means it's good.

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So, like last time I was working on the. I was telling you about the template for templates that I was working on.

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So let me share my screen.

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Oh whoa whoa, I was.

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If you're interested, um you may be interested, so the we're at the moment streaming to three three different uh platforms. It is twitter, it's twitch and youtube and we're doing it using a software called a sales product called streamyard.com.

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I stream yard, and you can go to the website streamyard.com and they offer like streaming to multiple platforms.

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You have to subscribe, of course and pay, but it's like, I don't think it's expensive, seeing what we can achieve with it. um So it's very good comparing when we are doing asking api conference and we had to use uh some different tools for it.

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uh Streamyard looks pretty cool because you can also add your banners. Your overlays, uh but yeah uh we're using streamyard and streamyard. The only uh like crappy, not cool thing about streamyard is that you can only share entire screen.

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I cannot like I mean I I'm on mac on firefox, and I cannot share screen to the of, for example, share only the visual studio code.

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And that's yeah, that's what happens when I start sharing like this infinite.

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Okay, I can see now that you can see the visual studio code and let me, of course make it.

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uh Okay, so the template I'm working on here.

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It's its goal is to make it much easier to write your own uh docs or code generators for asking api, so I'm always doing this introduction because I'm not sure who's doing uh watching the live stream. um So that's probably boring for someone who watched the live stream on thursday, but yeah.

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Let me quickly explain so asking api is a: is a file right, machine, readable file and you can do because it's machine readable you can consume it in whatever way you want and to make it much easier to consume such um document and produce something out from the document.

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We have a project called generator and the generator it's a it's a tool that gives you a lot of features, a rendering engine that makes it like makes it possible for you to define templates so files with some um fields, parts of the file that we have as a template and generator injects in these places in this in this templates, the a given value from the async api document.

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So looking, for example, on my example- template, let's see this, so it's a index html file, so it's um let's make it bigger. Maybe.

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Because on mobile it doesn't look.

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Okay, now, when I make made it larger, it looks good on.

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So a template say like, for example, if you want to produce html files, so it's like index.html file, but, as you can see, it's not fully valid html file because it has some strange values in between mustache and percentage or just double mustache.

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So it's a it's a syntax that is powered by the nunjux template engine that we use in the generator, so basically generator what it does um you provide generator to the template.

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uh Generator knows where to find the template files because they are always in the default location.

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In the in a given template in the template, folder and, for example, it takes channels you can define that it's going to take channels subscribe channels um and do something with them like render something specific, some additional part in this case it's, for example, a list channels is a macro.

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Actually, in this case it's a partial. Let me show it to you.

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Oh, it's of course macro so macro. It's a it's like a function because uh you can pass custom parameters into it. So it's like a function, but it's a function that returns here as you can see, whatever you define so in in this case it's a some additional html, so the the the generator. What it does it.

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It notices that you want to inject some content uh parts, two parameters to it. So all the channels- and you specify that you just want to have a a publish uh channels with publish operation, and you should list channels and the list channels again.

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This part is going to be rendered in the index.html file.

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But it's gonna list all the channels and it's gonna iterate over.

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All of them and create a list of all the channels.

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So gen that so that's one basic stuff of the generator like the uh the templating engine, so you define what is going to be generated, but we generator has additional features like custom features like, for example, hooks and hooks are pretty cool because they are fired at different stage of the generation like before generation after generation.

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uh So, for example, uh the hook can do something like uh what this hook is doing. So it's generating additional of the of the of the file, so you can by default, generate index.html, but with this hook you can specify that it should also generate additional formats like svg or png or pdf, and it's it's this operation, it's a it's a custom additional operation that runs uh on a hook on event uh generated after so after generation before generator is, uh is done. It also fires all the hooks, for example, but yeah.

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It's um it's pretty large topic, so I don't want to get you bored too much with it.

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Unless you want, then just let me know in comments so this project, it's um it's a showcase, so you can see after readme that there's a lot of it in the um in the table of contents, so the table of content contents. It basically describes every part of the of this project of this repository, so it describes all the features that you can use within generator and then points uh to the example. How it's being used in this template and also idea behind this template- is that you can it's a.

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um Let me show it to you.

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So far, I'm still working on it on my private github, but it's because I want to first finish it and then create it as apr in the official async api.

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Organization, okay, so, as you can see, it's marked as template, which means that um you can use this template when you create your new repository and in github, when you create a new repository, you can say: okay, create this new repository using a template, and you can point to this repo and then github will, by default, create a new repo with all those files in it.

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And then you just have to follow the instructions to modify given parts of the repo, of course, to make it work for you.

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Okay, let me take a look on the stream.

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Let me stop sharing for for a second, so we have two viewers.

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Would you like to say who you are right? Who you are, or one of them is from at the.

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Okay, no one wants to reveal his identity, so let me go back to.

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Okay, so the the status of this template. It's um it's almost done.

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It's almost done so the the only pla. The only thing that is missing is the uh a a read me because the current readme is, of course, a um a readme for the template to explain you different parts of the template, but um we also need a a template for the readme, so we know how to document your your generator template how and where to put information, how they constantly can customize the template, how they can run the template, etc, etc.

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The second part is the is the interactive tutorial, so, what's cool about this template, it features all the features.

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So it's like a one place where you can find everything and good examples, and you can generate a real thing out of this template, so we can just take it and then modify and play with it a bit when you're on boarding on the technology. So it's pretty cool, but it can be also super overwhelming. As you could see the tlc, it's pretty huge because, like generator, it has a lot of features that you can use.

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So the thinking here is that it would be nice to have a interactive tutorial where you could learn all those things that are mentioned here in the readme step by step.

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So one step of the tutorial would be okay, create a simple template with just the basics that you need to have. Then the second step would be like at this and that to learn future number. One next step would be future number, two and then etc, etc. The same way, so you would like really step by step, complete.

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Complete some steps, finish them and that's how you would learn.

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Other option is also recording, but.

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There's not much, but the problem with recording is that it's much more difficult to update and with tutorials it's much easier to update whenever there's a change.

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So I don't think video is a it's an option here and not always many people like videos.

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An interactive tutorial is when I, what I mean by interactive tutorials,.

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Let me show it to you.

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I'm not sure if you noticed that we have.

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Such an interactive tutorial.

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Okay, so it's still this alpha because, as you can see to use it, you have to go to katakada.com because we're using it for free now, but we're in contact with o'reilly and because we're open source project we're gonna, get some discounts to use them.

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uh We just need to yeah find a missing budget still to cover some costs, but once we have it, we will be able to create such a interactive tutorials.

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What it means is that, basically, okay, you can put some text explaining what the tutorial is about, then start it and then, as you can see, it's really interactive. So, first of all, you have some instructions on the left. You can even have a a a a pretty simple code, editor on the top right and top bottom.

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You can have a terminal which is pretty nifty to have a terminal where you can put some comments and the cool stuff also about the instructions is that you can, when you read them- and you have some stuff in it- that you have to execute.

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When we create them, we can add actions to those. So, for example, first thing you need to do in this tutorial: you need to create a nothing apim file and there's an example of the of the file. So you just click on copy to editor and it's gonna, be it's gonna be done, so it's much quicker than you doing it on your own and then you just read follow and that's pretty much it. The first step is just an explanation of some fields, and then you can have another step.

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So when I was talking about template for templates, this such a tutorial would be like yeah. Every step would be explanation of a single of a single uh feature, so you would like build this template for templates from scratch here in the tutorial and then yeah. If, of course, you can trigger uh commands.

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Etc, etc, uh but yeah to start using this like uh fully those tutorials, we first need to really uh subscribe for it and pay.

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Because now you can it's not cool for you to go to a separate platform and sign up there, because that's required to use the tutorial um and we would like to have those tutorials embedded inside the website. um There's an api website like you, have it with kubernetes documentation, for example, and katakada tutorials for kubernetes.

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um Okay, so I'm not gonna go through the tutorial, you can do it on your own.

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You, I think you get an idea how it works.

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So that's a static, stitch lights tutorial and this one is the same, but.

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Interactive and that's the plan with the with this.

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Tutorial, but I'm still thinking like like does it make sense to work on it now um if, at the end, we're thinking about changing the the template engine that we have in the generator, so some of the features will not change like hooks, but the the template engine, the nun jux.

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uh We would like to like not long term, replace it, but it's really long term, but we would like to add another render engine uh which would be a a react for many different reasons. uh You can ask in chat- and I can explain why but yeah so this one. This thing is questionable and next one would be circular refs, that's easy, but yeah. I still need to add it to the template.

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So let me make again a short break: let's go to this back to the.

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How are you doing.

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Have you done have you done live streams before, like I'm doing it now, because it's super strange, I mean it's, my third, but it's my second alone and it's pretty weird um speaking loud to kind of. At the end, it sounds like you're speaking to yourself.

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But if you would put some comments, I would not feel that strange anymore.

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So any questions from your site is there anyone here because of oktoberfest.

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If, yes, then let me know anonymously if you want or actually you can't do it anonymously, I guess but yeah just write. What issue is interesting for you from the list of the oktoberfest issues. I can go through it and explain.

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Or just write in the comments that you just want me to go through any like random issue, because you don't know which one to choose, so I can choose the easy one or moderate one. I can explain what such what has to be.

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Done okay, so let me let me do it on my own, I'm gonna show you the easiest.

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Okay, you should see a screen in a second. Well, it's pretty fast, um okay, so that's a excel sheet. I mentioned at the beginning of the stream, where we maintain all the issues for the hacktoberfest.

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We have different level of difficulty for those issues, so we have easy ones, but also demanding and one hard and still too trivial left, but yeah the most, uh the ones that are here visible the most is it different in english.

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Not sure if it was correct, english but um but yeah, let me explain those cicd, because these are interesting. They look like uh it looks like we have like 20 issues about cicd different issues, but at the end they are not different.

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98 of them are the same, but the thing is that we have them for every single repo separately.

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First of all, because.

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You need one pr um and okay, that's first and the last reason uh why we duplicated them and also the application had to be done because we're using github actions and github actions. Still I don't know why. But it's still really the problem is and it's I guess it's not just github actions. um It's with nci. I guess the thing is that we have many workflows, ci workflows, that are exactly the same for every repo, but you still have to repeat them in every repo, which is not the coolest solution.

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I guess you can imagine um so. For example, we have a workflow where we by default, wants to accept dependent, bots, um prs and merge them, and you have to have such a workflow defined in every repo separately.

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So there's a lot, it's a lot of work, but for a for a hacktoberfest participant, that's a pretty easy, easy issue to handle. um Because, first of all it's pretty easy. You don't need any special onboarding, it's easy to complete and if you're not experienced with github, um you still never did any suggestion in the repo on your own.

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But you still want to do something that will be helpful for an open source project. That's pretty cool you should handle. So, let's just open the first one from the list.

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So there are four steps that need to be done with such an issue. So, first of all, we you need to create a new file called sentiment analysis in the workflows and basically replace create, put the content in this file exactly the same. That is under this list.

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We also need you to remove a funding yam.

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Not every repo has it, but this one has, and you could ask a question like: why would you like to remove funding like do you need? Are you like not interested with um funding anymore? Of course not we're still interested. We still need your support, but the thing is that um something good about github is that.

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It introduced a special repo like global repo um that you can have on the organization and files like the files called that are understood as a community health files.

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If you have them here, but you don't have them in your in your repo, then those files will be used as a replacement or as an as a default as a default. I guess that's a good two board so, for example, if I'm gonna remove funding yum from here.

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Because I have funding yam in dot github and I remove this. I will still have this sponsor button here. So nothing will change and you can imagine the good stuff about this is that if we have just one global file, then if we make changes to this one global file like, for example, um a few months ago, we added github because we got accepted uh for github sponsors and yeah. You can imagine if I would have funding game file in 30 repos.

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I would have to make this change in line three in 30 repos 30 different pr's, pretty crazy.

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um So that's why we we would like to have one file, because in the future I still have on my list that I would like to try out the issue hunt to to add some um issues that we could pay for if they are solved from the money that are donated to the community, but so yeah. You can imagine that I would prefer to modify just this file instead of duplicating the change in 30 different files.

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um So that's the second thing you have to do in this issue: just remove a file if it exists, then in an existing file.

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You just have to change in line for pull request, to put request target and make two tiny changes in auto. Merge yam file extend lines where we, where we check what actors submitted apr. So it's pretty pretty easy.

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Thanks aaron, finally, someone.

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So that's, um let me start sharing.

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So these are all the cicd issues, the only exception from what I just showed. You is the moderate one, but that that one is already handled by jurgen.

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That volunteered to solve it, he's pretty pretty close to to solve it, um and it's pretty it's going to be very good change, he's going to do it so because we're um we want to tweet.

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We want to use github actions to tweet whenever we have a new release in our libraries, but we don't. We agreed with community that will not spam community with uh patch uh releases, so only major and minor. So there was a need to do some investigation. How we can do it uh to first figure out that it's a patch, so we should not trigger a twitter function. Twitter action.

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The other issues.

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There are some docs, but for one I know that barbara volunteered she will work on it.

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Oh yeah and that one is the issue the dog's demanding one that is about creating the template, readme for for generator templates.

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And there's some javascript.

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Those javascripts are pretty cool for the ones for parser, because if you will like you're interested more in asking api you'd like to learn spec more um from my experience, I can tell you that when I was when I joined using api in february the most knowledge about this bag, I got when I was working on issues for the parser, because parser is for the spec. You need to know how to parse and given information from the file and to know it.

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You have to read this back, so I had to read the spec pretty much a lot.

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10 minutes left any questions from your site. Would you like to learn something in those 10 minutes?

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I can explain, explain anything anything that I.

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There's this um I could jump to the templates to work on the circular references, but it's just 10 minutes, so I'm not gonna be able to do.

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Okay, but but if there are no questions, let me do it.

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Let me jump to to the template.

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Okay, so, as I said, the readme, I'm still gonna wait with the template for the readme to see if someone from octoberfest would like to take it over, and here I offer a full support to explain, of course, how and what have to be done.

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um The interactive tutorials. I talked about them already, yeah.

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Yeah there's a lot of thinking that needs to be done and show usage of parser helpers for circular refs. So what does it mean?

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The cool thing about parser and, of course it's not.

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It's not cool because I created those features, not, of course not.

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Some time ago, I added few cool features to the to the parser, so because in the parser you can imagine that, like we have to read document like everything that is in the document, which means in the parser, we also have to handle circular references and handling them like handling circular references in general. It's not so it's not so easy, especially especially if you're working also with json schema. You have different fields there. It's pretty complex.

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And you just have to educate a lot to support circular references as much as possible and because we're handling those already in the parser. We need to know where to break uh when to break and uh don't go further uh to not uh kill the parser where or go when going through circular references.

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Whenever we find out that we we got into circular reference, we are adding additional special parameters to the document, so we first, for example, on the on the top of the document. In the root of the document. We add um such a property as x, parser circular and when you're working with the parser, you parse document and you, for example, use function, has circular it's going to tell you if this document in general contains circular references or not, and it's particularly useful when you're building tooling.

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So, if you're at some early stage of building the tool and this early stage is not a moment where you would like to think about support for circular references. Then what you do you basically check in your template?

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If it, if a document that someone provides inside your tool, has circular references, and then you can just um drop a proper error message, saying like at the moment, template does not support circular references, for example, and link to a issue in the backlog that um will have it.

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We also have information in schemas for a given for a given object information if it has, if it is circular, so we can see the example um you get a list of com, you get all the components, uh then um recursive self schema properties uh and you check the property and you can check with function circular, if it's circular or or not, and the cool stuff is also that, if of course, uh in the case of um in case of objects, if, for example, self children is an object, you don't only check if it's circular, you can also check.

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You can also list all the properties that this object has, that um are silicon circular, so it's pretty handy to use it in templates.

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I use it in the I use these features in the markdown and html templates and to support circular references there and it was. It was really had a lot of work to do uh added a lot of magic, um and you can imagine templates um like like doing all those all these things in in templates and doing it in every template one by one. That would be not really efficient uh to solve circular references issue every everywhere.

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Place you can see there were not many things that I had to change in the template to support them.

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So I was just checking um if it's circular, if it, what are the prop properties.

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And then I knew if the property that I'm handling in the in hindi template is in the list of the properties that are circular, so I could just uh break it properly.

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And yeah um supporting circular references directing the template would require a lot of changes in the template itself.

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So that's it! Those circular references, that's the stuff that I need to show in my templates for templates how it works.

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Because in the template for templates how the template for templates works, I have some output already. So the template for templates and.

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Let me show you what it generates.

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So it generates a diagram dependency, diagram of different schemas.

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So you can see.

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Excuse me to generate such a diagram. I have to go through, like everything that I have in the in the document.

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This means that I can encounter a a circular reference, so I have here some functions that let me traverse all the schemas go recursively through every element and now it's it does not um check for circular references, and I don't want it to explicitly support circular references. I will.

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I will simply make a use of those functions that I get in the parser to easily detect.

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Where I have a circular reference in a given place and I can stop it.

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But yeah that's something we're gonna have to do next time when there will be no questions.

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11., does anyone have any questions before I finish and do the.

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Summary, no, you sure so the next um next things so today um at 4 p.m, utc, which is 6 p.m. For me, which is 6 p.m. Cet central europe time um we'll have a our public meeting.

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Which is not, which is a bit different than the stream, because in the stream, I'm alone talking to myself uh hoping you're listening and the public meeting is about really having a discussion almost face to face, but of course on zoom anyone can join.

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I'm gonna send you a link.

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I'm gonna send you a link to a issue where we work on the agenda and you can get a link to zoom.

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So we can join, live, talk to us live.

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About the asking api initiative- it's so it's tuesday today, the next stream for oktoberfest it's thursday, and it's um also in the afternoon, for uh so it's much more friendly for people in europe that or africa that like to stay late or for uh america's it's gonna, be yet again like with the uh meeting we have the public meeting we have today, so it's um 4 p.m.

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So I encourage you to join both meetings.

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In case you have any further questions, um or you would like to like, you prefer to discuss things in more like more in private. You can like the best would be, I think, to join our slack.

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Let me share you a link.

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So feel free also to join slack catch me there directly.

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If you prefer to stay like almost fully anonymous and just talk to me um about some issues, I can then fully explain the issue to you or on the stream on thursday, but fully again anonymously. So, if you prefer this way, it's not a problem.

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Okay, so it's five past thanks a lot for joining to all of you.

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Hope, that's useful for you and see you today on our public meeting.

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