IPFS Learning Resources, 7 Apr 2020

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From YouTube: Developing Apps with IPFS API - IPFS Camp Workshop

Description

Local, Remote or Embedded? go-ipfs or js-ipfs? Core API interface? Command-line? HTTP contexts? Pick IPFS API implementation and ways of interacting with it.

https://github.com/ipfs/camp/tree/master/CORE_AND_ELECTIVE_COURSES/CORE_COURSE_C

Learn more about IPFS Camp: https://camp.ipfs.io/

For more information on IPFS
- visit the project website: https://ipfs.io
- or follow IPFS on Twitter: https://twitter.com/IPFS

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Small sandbox occupation is to leave their basic understanding about ideas in apps. To do that, to be able to.

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Finally, how to store data? How many other picture twenty first and how do we get it back and speaking about partnership? When people want to publish a picture, we publish our other one or change the description. How do we start updates.

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Let's talk about provisioning, which is basically a fast way of looking where to run a difference.

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There are two high-level patterns when you want to use high diversity wraps every variant.

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First, one is where your application.

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Doesn't have a baby first beside your defense is from somewhere else. It would be the same user, people's or animals somewhere in development, research and your output.

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Signal pattern is when your app and that you just note, are one in the same and that's.

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The fastest affecting service when you wanna give us the second service each act and the other restructure database.

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You can sell for you infrastructure by installing going FS. You can pick 3d wineries or beautiful sources.

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If you have bigger needs such as your data set, does not feel singled out or you want more advanced features for managing incest. You want to ensure that people copies notes, then you want to deploy that give this cluster on top of NGO activist notes, more advanced features that we don't won't go into that entire courses.

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So if you are interested.

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Deploying IP physics researcher place and go ideas go collected in its today after this course, and also if you want to learn more about active as faster this vector P and Tiger survivors and I, please could you show them shortages? Of course you don't need I'm there long, it's such a pain or you, some providers.

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There are cloud providers, thoughts you some either free access to free services, central slapback way completely or basically, services. When we get some free space to experiment and then you can decide, do you want to continue pay paying people or run your own research and even Microsoft provides driver, City, centric version of.

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You name that forgive.

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Us example of that they taking me daily run local, not in the app talks with over a standard in practice. Its textured photos is a good example of mobile app, which, in the uses under the biographers and there's entire.

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As you don't need to, an entire directive has binary. You can make your customized view and there's a pretty cool example of I could slide, which can be used for fetching, which especially some box and putting some network.

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You can also purchase a difference and you can embed it anywhere in any web context. That's the keyword reserve that could be like some not purchase in all application when you run a web browser, internist, amputations around transports and discovery methods, I think for coffee.

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This exercise to the standard is just what's available for Jessica thousand articles for jsapi FS. There are differences between Jessica's managing web browser and cranny keynote. So if you run not or go gosh, you have access to TCP transport. However, browser is impossible to establish disagreement relations. We use WebSockets in that context and luckily you can enable it and go after so we got certificates. So that way you get the full transport coverage across both implementations in all three runtimes, so web sockets are beautiful.

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To see lets you establish direct point-to-point connections between browser notes and thus working progress and also go. Has a quick traffic spermatic will transfer Desmond enable we hope to see.

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Here for browsers may be related to web RTC. At some point of us, this is the card states. Work circuits are probably a signal fault. Where are other differences? That's all, however. The takeaway for from this basic course is that you will go up if s invective context when performance or additional features.

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This is because it's a default choice in web browser and they were would work with jazz or or don't need one of those advantages. There is a huge iterative of the protocol level that API is the same transporter lock this company works as well, and soon we will have the HD for now. Jaesik because does not help engage me.

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That is why, during the course, we will see how to discover that's a karate guys I profess once we've give us come online Enterprise, which is a restaurant, and you can use it or interacting with your local notes and doing these powers who use some of those comments. This is much longer and did not. They don't speak about the same. Api six falls over HTTP, so that means, when you start I give a demo.

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It will announce itself on multiple parts for other nodes connect and it will also open an HTTP port will take the I there's a separate port gateway, which you can think about like a read-only, simplified, safe.

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Api we will talk.

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About Gator detail.

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I want I will just single I give this command.

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Executing ID, which would return you basic information about your, not your PID, your addresses you execute that, like this I need to show you details about you look around. However. Igfs comment is also HDD clients for our API, certain point it at any other API endpoint that it will execute. They come under such the big line. So you don't really need to use this command. If you don't want to, you can NHD client, you ask the proper the proper course you can use it if there was a freshness that.

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Those constructs will give us an interesting possibility. So let's say you have IP first running somewhere in the cloud infrastructure and your is connecting lead over API in connection drinks with happens now you can be fall back, fall back when you're automatically spawns and better Jason be fast and seamless fashion and an example of that. Exactly we explore explore this publication does not depend about identity. You just want to get some blocks from the network and show them to the user, which is critical demonstration of this its tries to connect the local API.

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If you are running it and you allow to write, if not, it will transparently fall back to another Jason if s and you still be able to access the same assets and exploded, and now we are moving to the demo application and the practical part of our course, and he go tell.

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Everyone again so, let's try to build, and while it would be something like what you see on the screen.

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Will be really simple: we we have like six of exercises into and the last one we like the flop working. Hopefully everything goes well so I'm going to ask you to get a template for the then what go to this URL? You will have their link to get a repo and I want you to clone that people and basically run NPM start and open. Also, in your text editor on that forward, we also have the link.

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So the state that I want that everyone has basically this a browser with with a very bad motive. In the other side, your text editor on the first exercise. So if you have any questions, please raise your hand and we will help you.

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Okay, are you able to do anything spot and get to this page yeah? Everyone won.

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This helped got.

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It yeah cool, so let's go to the first exercise.

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So what we are gonna do now on exercising one is basically connecting using the API using our HTTP. Clients will connect to a remote node. We have one Running Bear here genius one eats on his laptop, and we were convinced here is that it's basically we have the daemon running. We have a PHP API and we give card connects to this address.

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So let's try to do.

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We have some also some resources, with the condition for the HTTP API and also for the client itself.

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Okay, so the exercise is really simple: disposable service, please already done for you, but Alice works is basically like this relax. You will have some comments on every file at this one. We have to do to use and choose three on this file and below each to do. You will always have a link. This will take you to the documentation, so you can look a little bit to it into it and basically, what we need to do is copy paste.

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Whatever is in the communications just so you get a feel about how this works and how the our documentation works on this one. The first to do is to tell us to add a script at the loading gauge to be quiet that basically loads. The browser bundle for the client- and that's only been here, but if you go to the link, you'll get two instructions to do exactly the same.

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Now this one, the second to do what what what we need is to connect that so here we still need to do something because disagreeing is what is wrong right. It's not the same as you can see on the yellow stream. So let's try to change the IP and she's important to arrive asleep on exercise one exercise one way over there and then let's change the idea.

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He the board, is also wrong this one and save it should reload yeah. We have what you need so.

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Last, to do of these synthesize.

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Is use it to be blind to find the route the demon ID, so basically it's some basic information. Yes, the is listening on the Aidid public key. The agent called the fact that those where the documentation- and we call command like this- you give me these callbacks of promises and it's really really see anyone has any questions for this first exercise. Everyone did.

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Case so you can do do you know how to set the course don't want me to my materials, yeah, okay. So if you want, we can continue that after.

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So, let's go into the second exercise, which is basically doing the same thing, but using the embedded, J's, liver.

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We will be replacing HTTP clients with the reneges face. We have some resources. If you want to look.

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Or we can just go into the exercise number two. You can always go back if you click on the title, keep.

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Good to the exercise number two.

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You go to the second file: fallibility, VI, dot, HTML.

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So exactly like the first exercise gets introduced, we have some links to the documentation and this one is not already filled, so we need to do it so the first one you only saw at once. We need to go to that drink and get the URL to create the script I'm on the first right, click go to the link and get the the URL to do to the browser and paste it into the file, and then we go into the second to do.

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Okay, so now we have the script tag again. If you have any problems to me, any of the tools just raise your hand, and we will help you, so we get the script tag after this. You need to go to the second to do, which is basically initializing and configure the GS demon. Here we have one big difference between the clients and the demon, because in the services we are running the full mold inside the browser- and we have some mutations in transporting relevant. So we need to use a signal service.

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So the browser can talk to you, the network, anything as you can see, we have a little package called web, so start with. Basically this signaling, so the each browser connects you. It knows about all her peers in the network and we need to use this one in the configuration, as we will see in a bit and this one is run by Jim Pig right over there. He sells in the cover, so the point here is that anyone can run into signaling services and it's easy to do- there's not much water inside of it.

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So it's there really simple, so it's going to the second to do. We have two links here: let's click on the second one because it's explained to you both initialize, a new configuration.

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So right here we.

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Configuration to.

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Service, you can just copy it over here. We're not gonna use this one. When you use just base, we save it and we can already see peers. So we are connected to the network.

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Anyone these help no.

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You can always follow the cold or look at the screen.

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Yeah, there's no no.

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Just this William WebSockets or we want to see, if you don't know where to connect, you can even announce yourself like I, hear an excellent there's, not.

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Okay, guys, let's why my lungi tell pause. Let's do the last step which we can actually just go to exercise number one coffee, because it's exactly.

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The same thing must the same api.

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To sing to face, go to the second one and just paste it in here and hopefully we will get yeah go. So we have another different difference here, which is this event right: the HTTP client there was.

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Because we were connecting to a remote server, the remote server is already running. It's already started, except no connections at announcing itself in the network, and everything is already running in the browser when we run a full novel jet. So we need to make any minute to wait a little bit before going to mass. Actually, this command doesn't actually need to wait for this event. Just for the purpose of explaining on how the complete API works.

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Normally, we need to wait for this event, just make sure that the network player is initialized and at least we are making the first connections the first history of years.

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Okay, already golden Tom yeah went nice, so IP effects right. It's a final season and being a file system. We should be able to put some variables and files and stuff on it. So that's what we're gonna do in the next exercise.

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We have the files API, which is basically every facade I. Can't.

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Yesterday you had some courses that hopefully explain explain to you how this stuff works and then gonna use that the for CPI, but for more complex structures. You can also lose the use that there's a good guy.

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He's busy IPL week and relief, you know what I believe there's been some poster sessions yesterday, there's gonna be a leap live today, but yeah we're not gonna go into it, but it's there. You can learn more about ask us. After about it, so let's go into an exercise about any files.

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How I think x was you basically run nephew face tax month which works.

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In the terminal.

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Works as an API, you can use each client several ways to use the same interface and if you write a file, you get s Yeti and content identifier right and if you run the API, you get the same thing, plus name plus the size. This is the condition here. Let's write to do it, you know in our exercise, challenge, 3 and basically in the challenge. 3. The only thing we're gonna need is that first one just told you this accepts phobics or promises and when you use drama so videos async/await.

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If you know about JavaScript, if you don't know morning, it's really simple to me: you only need to copy the deadlines over there to get sake. So let's wait to do it. It's the way. Let's go into exercise number three: let's get the third file which isn't named add file.

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And, as you can see, everything you did before is already there, you don't need to worry about it. You have a script tag. You have this evening service everything, but the node is already configured with the many events. Now we all need to care about these parts so again to do. Link documentation, go into the documentation and, let's figure out what files.

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The opposition explains what each input you get all the options: lots of information.

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Also right here you get some examples and now to add files right. So the line we need is this one?

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Let's stop it right right here.

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And if you look to the interval notation in this part, this is how the octopus- so it's always great, with all the files that you see any parts we just want.

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So we get an array, so we need to to assign this value to the CND right. So we have the results in a console log. If you want just don't forget what the S or remove the S. This just make sure it's right and now, if you go back to our little hat here, we need to do results.

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We have an array one two. First one and we want save it. We save it. Hopefully.

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What's wrong, can you feel out what's wrong forgot to tell you about so I just copy, but I simply mix, sometimes right? How it puts follow me across here and now. I want to tell you a little bit.

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About file, that's.

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Object- and we also support directly here, so we know don't need to go around under the transform your your files, if you are doing an implode, thingy like we are doing now so.

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Remove here, okay and let's try to run the file okay and we get to saving right.

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Then you follow, you have any questions and problems raise your hands. Just try to follow the golden swing.

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Now, going to the editor.

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Okay, so now that's you into reading parts, it's basically the same thing, but in Reverse right we have a simple manner as kept on time and if we all read the file, we get ready and we pass society to the cats and we get far away same thing using HTTP VI or as we gonna use in browser counter programmatic interface.

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Also, there is no option both content.

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When you run your demon, you can see that this line here, which is the gateway gateway, always you easily, with only I just open, nothing else just to all the content. If you notice the ID, you can use this I like imports and you can build your URL basically at be part, / /, the ID and you can see whatever the contents inside the file and you can just load it in the browser. Just like that.

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So let's go into cellphones forward yeah again the only.

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Going we need instead lying over there, nothing else. If you want to see the dogs got the dogs down there, that's right so back again, this is for.

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Okay, so let's try to do this. This is one we have this one. We have an extra step that actually doesn't have comments, order to do it right up there. We have something related to the game. You see here. We have gonna, try to load in English from our local demon and directly from the Gator. So hopefully you already know how to build and URL for both in the content completely. You have the awesome.

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We were there on the HTTP GET available and let me just point here: the CID will be here so here we need to build the URL for our content. So let's use this.

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So here we have the awesome already feeling for us and what what we need. It's basically /ip effects and CID. Nothing else.

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As you can see, everything is there I strike seat? We then just close, so we did the same as last exercise. We added the file nom places right, two loads directly. Oh doesn't work.

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And close, but we still missing something: we need to load it from our replay right and you can go to the link and see the options and now I'll cat command works. You're gonna! Do it quickly here it's just as the one before okay, we need to send sending to see ad save it. Hopefully.

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Right, okay, so.

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Did you manage to follow up until this point in the world that both images, sometimes they give me a little longer because it's figure out how to get to because the gateway is use the public, our public gateway? Actually, when it loads is finished, it first needs to go into the browser. The indexeddb of the browser gets all the locks for that image and then, since file the image we do the full circle.

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So, okay, no, no questions, no problems. I mean helps to get to this one's. Although yes,.

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So now we need a way to track the place by naming things right. Of course we mean so this thing takes us to a penis. We need a spectacle in to the content. Bath idea, festival tool. So if we change the content, this CA will always be different. So if you wanna do the OCR websites b9 confess or something like that, if you change anything on your site, the site changes. So how can we like maintain a static name or a static pointer to our content? We're not going to like handouts.

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Cid is every time we change our website right. So we have a naming system again s. Basically B we get again as /aa the action forward, the wiki, which is basically pointed to our content. You can also have rhythm or lames using Vienna sling, so we don't use any action, any ash and you can also get to the content.

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The API looks like this: it's may be published when you publish you, wanna publish a CV and you get back IPS pop with the key a so this one is the multiple one right, the Sienese, an mp3 assignment will add, Venice, smooth, basically a multiple pointer. We multiple content, and we, when you want to resolve you, try to resolve your key yeah me and you get back itself.

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So what about like? We I want to publish different because this this key here by default, if you don't set up anything else, is the key for your IP effects. Instance, when you initialize your assistance, you create a pair of keys, and this one without any for the setup is that is the key is actually in that public key. So we need. We are going much make more than one thing right, so we have only be effortless.

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You can generate several keys, you can name those keys, then we, when you publish we just pass in the name, you can do multiple publishers and you can use F key pairs associated with each of the pointers to the content. So, let's see if we manage to, we also will have deep diatonic today about it. So if you wanna learn more about it, has a challenge. Number five obtaining the multiple pointer with a connects so again, really easy. Just don't immediately is that line over there. Nothing else that's going in into the.

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Exercise one five.

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As you can see everything that we do the little now it's here right now, the only thing we care about is this last part right to follow on your engines. We'll need this part, as you can see, we're gonna call the polishing part. So what we need here is to polish. We need 12 sincerely and this Yeti will be in this variable.

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So we need to run the command passing the CID and see what what happens.

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But the link you can go and check the documentation just.

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See Abby, okay, so the output for the the published command is an object with keeping and another key, really that what we need for this last part. This is the output that we want want to build this frame with the with the name, which is our and this year, the value which is our CID, so I'm gonna do structure in JavaScript. If you don't know what disease in worried about. It's not the point of this talk. Teachable down the street.

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You just copy: what's on the screen: okay saves it okay, so now we're gonna do all the steps again. The objective at the end is that we close our avatar here. We can see the other time we just close it and then we're gonna build our profile.

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We're gonna write our names here. We're gonna get the CD for the avatar in this box. We're gonna copy paste. Here we can write something about us here and then you're gonna add everything together to like the effects.

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This is form kids, it's a little Jason and then we add this Jason itself and after that we gotta polish and when we publish the will show up here right, because this is all it's the list of beers and as we I explained to you, when we publish, if we don't passing any option, we publish as our default via writing. Our key pair is our default plae and we publish as our default PME. So we will show up hopefully in this side, on the dashboard.

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If everything goes wrong, so I'm gonna try and I'm already there No so again, shoes.

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We're gonna get the idea here: copy go down again just here, I.

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And then I'm gonna act like this. You can see the Jason here is the data yeah I think my PFS, and now we get to CID for that data this anyway, we don't need to cover this. It anywhere. Just it's all hooked up already just need to click the publish button. Then, hopefully, if we manage to publish.

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I did something wrong.

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Thank you again so now.

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We already see some of you there, hopefully again.

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You have any questions to get to this point. Raise your hand you want to see all the other avatars are there.

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And if I'm already on my computer on the left dashboard, hopefully on your computer sue alongside.

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Anyhow, to get to this point.

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No over oops managed to it's this one yeah.

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We go back to the dashboard and.

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Yeah, so if you have any question right now, I swung I.

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Cool, so you have any questions just we have some time now until we finish them yeah we have like 10 15 minutes any questions you are here to.

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Understand the question was: how.

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So basically, there's a swarm here which this of all the peers you know, is connected.

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So the way we get those services is that's run in juice,.

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Sensors, what's cool about this, our limitations that you can have multiple ones for the purpose of this course, which is one that gives us this nice that part who are here, otherwise we would use their publicly the ones or us we would get.

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So we have like a small subset just for this, to make it easier for you out, but you can have multiple ones and as long as at least one selects ever a works, you will.

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And in case, if you were running like go, if s or Jason, if hasn't even not in the browser, but you know, then you get those schemes from HD. You can also be seen on several, but you have access to me.

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Inactive s, we have a thing called what we call the repo you have like several their source for these different purposes, and one of them is to store the keys and you want you can even work. Other commands the key namespace that allowing you to export on my equal theologies. So you have full control.

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Do you know how many the types of keys we support right now? This was at least.

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And change the type when you women generate you keep you can be.

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You can switch in the future as numerous years because transparent institution anyone generate.

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Change in G, changing chords, much disparity here, I need that we could see it on the screen before the just multi-touch, which have predicts, which was self describing he told you was poverty issues and soon our approach for keys.

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But the gives you that is there. There is no like multi formats, while also lost is not like the other types of representation like screen representations like the others, the keys itself, it's just the keys. The output right used to that after represents like the PID, which is or the agonist I need, which means the ash and then, with those were representations. We are. We have a thing called formats that we call of all this information with specific in a specific way, so we can upgrade in the future leave stuff answer more.

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No, ok so hope you liked it and we will wrap it up. Thank you guys. You.