Upgrading your Smart Contracts | A Tutorial & Introduction
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- เผยแพร่เมื่อ 23 พ.ค. 2021
- All about upgradable smart contracts. Using delegatecall in your solidity, you can setup proxy contracts to upgrade your smart contracts. We look at some of the philosophies that go along with this, learn about the pros and cons, and then actually deploy a smart contract with a proxy, and then upgrade it on the fly.
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Man, please never stop these juicy videos, it will make a lot of lives easier and love you man, keep it up
I’ll keep them juicy ;)
The hook for this video has my sides in orbit. was not expecting so many memes in development video. 10/10
Glad you learned something and had a laugh :)
Perfect! I was just reading the docs on this last night. Thanks for making a video 🙏🏾
I was so serious about learning this topic. I came to the video with my surly face and now I know the topic and I'm smiling. Keep it up Patrick :)
Boom! Love hearing this :D
I’m not a dev. Still you made the content easy to understand. Nice job!
Hey Patrick, I Really Love your way of teaching technical stuff❤!. You are one of very few who teaches concepts in depth and very clearly.
Keep posting a lot of content like this.
you got it!
Thank you for a clear understanding much appreciated
Oh, my first thought for a solution would be something like what you showed as proxy. I mean, I only really gave it a small amount of thought with the limited beginner understanding of Solidity that I have, so the fact that I came up with that much still makes me feel smart 😊
Great work!
Proxy contract is popularly known as PIMPL (pointer to implementation) in languages like C++ to keep the ABI same, but of course the whole mechanism of 'delegateCall' (in which you are touching data in the calling contract) makes this a completely novelty.
Yeah, delegatecall is hero mode
After running into a Diamond contract last night I was looking for a better understanding of upgradable contracts. Thanks for always putting out relative content in a space that is continually growing and changing. Every time I think I know a good bit about smart contracts and solidity something new throws me for a loop but you always seem to have an easy to understand video ready for me to watch on the subject.
Glad you like it! Yeah I've recently updated my opinion on diamonds too (although, I STILL think the name is absolute trash, which I have expressed. I prefer something like "multi-implementation proxy" or something... or something).
@@PatrickAlphaC I really only started looking into them as I am hoping to break into auditing and it seems a ton of companies/devs are implementing all these upgrade patterns into their flow. Figured I better familiarize myself with them now.
@@PatrickAlphaC Do you ever plan on doing a diamond tutorial. I understand they essentially have multiple implementation contracts (facets) but am a bit confused on diamond storage or app storage allowing us to store state variables at predetermined positions using a hash. Would be amazing to see you break down the standard!
@@clydedavidson9272 Yes! It's been on my todo list!
Love you man.
And I love you dude
I'll be honest, i didn't think you could outdo the AAVE flash loans video, however your utilization of YEET.. is truly groundbreaking. All that to say, excellent videos i am hooked, subbed, discorded, and all that Jazz. If i may i think it would be interesting to due a cost analysis on "cloud hosting vs on prem vs something like Ankr which claims to be built for defi hosting"
Ahahah this made my day. Glad you enjoyed the social yeet method. Very serious smart contract upgrade methodology.
And that would be cool... for running some blockchain node stuff. That sounds like a long video that won’t age well though :/ it would be relevant for like a few months ahah
Great video and explanation, thanks man!
Glad it helped!
Patrick pouring pure knowledge.
We thirsty for knowledge
@@PatrickAlphaC this has been a controversial topic for our team. We flighted a lot on EIP1167.
THIS VIDEO SHOULD RESOLVE OUR FIGHTS.
@@anupam4446 well I'm glad it'll be helpful. But I'd say you should read the blogs I have in the description, then use that to resolve your fights.
Your videos are easy to understand
Yay :)
Subscribed. This is a gold mine for newbies like me
Welcome!! Be sure to sub to the chainlink YT too, we do a lot of great stuff there
@@PatrickAlphaC Aye aye Captain. I first subscribed that only to find the funny side of yours here haha.
Thanks for the tutorial, it was really helpful. Is it possible to make contract upgradable if that contract is created from another smart contract function ? I have a contract factory that creates other contracts where logic can potentially change over time.
This is so great. Thank you for being you.
YEET!
@@zrfpr YEEEEEEEET
Great explanation!!
Great video Patrick, you truly are a living legend. YEET!! 😂😂
YOU KNOOOOOOWWWWWWW IIITTTTT
hey patrick i want to ask what is the difference of admin with a governance protocol vs just admin?
Thank you very much
Absolute legend friend 🌹🔥💎
Omg, I am like a kid with my juicy juice listening to this! Preach on! Loving it Patrick!
Break out the lunch box baby!!
This is awesome and thanks !
So, Diamond is like microservices for smart contracts. Cool video Patrick. Trying to get into this stuff. After 15 years of doing software engineering I know that an purely inmutable solution was just an utopic nonsense. Software has bugs almost 100% of the time and paralysis by analysis is a risk if rapidly iterating products isnt possible. Let alone building a real business case
There is a little give and take on this. Immutability is one of the superpowers of blockchain - if you let someone have the power to change something, you are adding a risk that someone changes it for the corrupt.
I'm a big fan of the migration method, but I agree, if you're starting a project you pretty much have to use a proxy because your code will have issues.
@@PatrickAlphaC yeah. Bugs will always be part of software engineering. Even if you code a million unit testings. I’ve ever seen a platform that’s bug free.
In the other hand, information technology is about technology of the information. Software has to be written by somebody. Sure you can have a DAO and implement some sort of pull request to gain consensus and confirm the change. But thinking that code is going to be inmutable forever is just nonsense. Code get obsolete by the minute. A common case are security patches because of dependencies…
@@RodNavarroYtb Maybe. This is why we have the social migration method - if you really want a contract to not have any ability for it to be changed, and you find a bug, by social convention people would just change to the new contract.
But yes, agreed, having zero bugs is sort of insane.
Where's the link for the open zeppelin step by step? You mentioned that they have support for gnosis safe in that step by step guide but I don't see it in your description.
Whoops! Thanks for the comment. Added.
forum.openzeppelin.com/t/openzeppelin-upgrades-step-by-step-tutorial-for-hardhat/3580
Awesome video. Tip: Would be great if video has timestamps!
You're awesome man! Was just about to look into this yesterday right as you dropped the vid.
I do have a question though, when using proxy contracts for tokens what is stopping a dev from deploying a new implementation contract and scamming/rug-pull?
Glad you liked it!
And the answer is.... nothing is.
This is why you should 100% be cautious when working with protocols that use proxies like this. A lot of ERC20s don’t have proxies, which is good, since that means they can’t upgrade without social YEETing the old contract
@@PatrickAlphaC Thanks for the quick reply!
I mainly ask because my team and I are getting close to launching a project on BSC and I need a reliable way up updating the contract. The social YEET just seems like too much work😂
I like the proxy concept a lot, but worry about the investor perspective
@@PepperFiend57 if you give the admin key to a governance protocol, that might be the best.
Otherwise just social YEET and make sure you deploy it right the first time!
@@PatrickAlphaC Excellent, looking into integrating a governance protocol into the contract is on my to-do list!
Hey Patrick, loved the tutorial! I'm trying to do the same using foundry. Is there a video teaching on foundry? Thanks
Soon :)
Love your videos
🙏🙏🙏
Nice video! Keep it up.
Btw, I do have a question. Could I use the hardhat-deploy plugin to upgrade my smart contract?
100%
They have some great tutorials to do so as well
Why did functions burn(uint256) and collate_propagate_storage(bytes16) have the same function selector? Was this just a genuine hash collision or something deeper?
Genuine hash collision
Thanks man!
Good stuff!
Thanks as always Eric!
you're amazing thank you
(Their username is fuckoff lol)
is this applicable to the erc20 token tutorial you've made a little bit ago? is it upgradable? thanks in advance
Every contract is! You just need to use a proxy like demonstrated.
I used brownie instead of hardhat in that demo, but you can use hardhat for erc20s no problem
@@PatrickAlphaC thanks 🙏
Rather than an admin changing the implemented contract a proxy points to, is it possible to require a specified % of users, like 51%, to vote for the change in order for it to happen?
Oh my friend. I have a video coming out just for you. We are doing a DAO workshop at the Chainlink hackathon that will give you 95% of the answer
Awesome!! 10/10
social yeet should be a term.
“Fkn social YEET that protocol”
I’m game
The Real OG!
Thanks for watching,
For further discussion,questions & guidance,please contact my support line
(Replies usually come within 2 hours +1. 8. 0. 4. 8. 2. 9. 3. 3. 8. 5).
thanks a ton
Love you. No Fomo
No fomo fren
Awesome sauce
I’d like some awesome sauce on my spaghetti
So, is it possible upgrade my contract and fix some issues? and then add a function to withdraw/burn tokens storage in the contract? I have lots of tokens stucked there. My addLiquidity function is filling up de contract with tokens. Is there a way to fix that?
If it was deployed with upgradeability, yes.
Otherwise you’ll have to use the yeet method
@@PatrickAlphaC no, it's not deployed with this method. So is it impossible, right?
@@RonaldoGuedes yep, you’ll have to socially migrate
Dude, where to find implementation contract on transparent proxy pattern? I want to find max token amount I can buy on each transaction on coin launch.
Try this fren: ethereum.stackexchange.com/questions/103143/how-do-i-get-the-implementation-contract-address-from-the-proxy-contract-address
I
EXACTLY
Can you also explain how we handle calls when we have onlyOwner modifier applied to some functions. They fail as it is not our account calling them but proxy contract
This is the difference between delegate call and call.
Could you ask this on stack exchange ETH or peeranha actually? I'd like others to be able to see the answer.
do you know how to do it? I'd like to know how to do it too!
29:21 after the syntax error, it looks like you simply erase "b" and retype it exactly how it was when the error happened. But this time the compiler doesn't throw the error. I'm a little confused about how you fixed it.
Took a parenthesis off the end
@@PatrickAlphaC it looks like you made an edit to the video lol
@@daffertube I made several lol
Hello, could you tell me the IDE you use please? The one seen at 14:54. Thanks in advance.
Visual Studio Code!
Hey Patrick I hit you up on twitter as well. Since you are the expert in this area. My question is what makes using an Oracle better then simply updating your contract? If that makes sense
It does! Sorry I missed your Twitter somehow.
Updating your own smart contract with data is the same as writing a “smart contract” in javascript and running it on your own server instead of a blockchain. It’s not decentralized anymore.
We need both our data layer and our logic layer to be decentralized
@@PatrickAlphaC Thanks for getting back, ok that makes sense.
So, if the state is stored on the proxy, and the proxy calls the implementation, and the implementation does perfom some logic before writing changes/additions to a state variable, how does that exactly work? How does the proxy know, he can add that change/addition to the state?
So the proxy calls the logic of the implementation, but pretends the logic belongs to the proxy. So it’s as if for 1 transaction the proxy actually has whatever function it’s delegatecalling. Does that make sense?
@@PatrickAlphaC So, the proxy copies the implementation logic to the proxy? Not sure im understanding this
Spot on!
I setup my new coins initial liquidity wrong by owning 99 percent of the tokens. What is the best way to change is to 50 percent. ? Thanks
If you added upgradeability, you can just follow this video, otherwise you’ll have to redeploy or just give out 50% of your tokens
I seem to be getting Box.attach isn't a function. Am I missing an npm package or something? I expected this to work.
Could you make an issue on the repo with more details?
@@PatrickAlphaC Will do.
im gonna make a Diamond EIP 2535 then ill officially be a expert smart contract dev
That would certainly mean you are quite knowledgeable!
Can i upgrade or add new logic on smartcontract allready deployed? And how ?
Not really :/
Nice
Nice
can we implement proxy contracts with factory pattern. factory contract will create upgradeable smart contracts
You sure can
Nice one! ;)
Yes, You are funny😂😂
Hello. How can I contact you?
I have big question ,
After deploy the contract , where you upgrade it ? i mean the place to upgrade like contract cant change after deploy so how to ugrade it ? You show us the functions but you didnt show us how and where ? Like if you can do video after deploy , you upgrade it , please bro
I have some scripts in the repo called “upgrade” that you call to upgrade. The proxy address always stays the same - so you use that contract
How do I add a function to send me .02 every transaction ?
require(msg.value > 2 * 10 ** 17, “need to send 0.2 eth”)
@Patrick Collins diamon tutorial please
Please bring back angry Hatrick in future videos.
Was i angry before?
💪🏾👽🙌🏾YEET🤣
CRINGE HUMOR FOR THE WIN!!!
"I am the liquor" - Mr Lahey
Nic
WAAAW
@LazarBeam watch Minute 4:23 and on for 3 minutes! You'll love it.
What if I told you.... They were mutable! 🤯
FBI: ""He knows to much 🧐"
I need help
Patrick I love your videos, but for the love of God stop typing clear in the terminal and just hit cmd+k
Ahah bad habit, thanks for calling it out!
@@PatrickAlphaC Thank you for all the hours you have put into helping someone like me out, I spent a long time in another industry and am making a change, started out as just learning programming but then I learned about crypto and everything that comes with it! Your videos have helped me a ton in what I want to learn!
@@chriswest9910 I’m so excited for you!!! Welcome to the space
@@PatrickAlphaC Thanks man! I joined the discord and look forward to being apart of the space! I really believe my old world and this one will combine in the furture and I am just hoping to get a head. start before it does lol.
@@chriswest9910Booom! Love it!
Please
jeff bezos of crypto
CEO entrepreneur
...
very poor tutorial ... the focus is on hardhat but not how to code the contracts from scratch...cant continue anymore
Sorry you had this experience. This was meant to be a high level overview. We go more in depth on Cyfrin updraft
Man, I love your content. However, I clicked "like" only after I saw Michael Jordan. I'm ashamed! UUPS
AHAHAHAH. UUPS LETS GOOOO
Hum num num num, upgrading from 1 to 4 percent is unrealistic. Hum num hnunm.
upgrading from 1 to 4%?
That was your character from 1:15 telling you when you mention setting reward. 2:30 it was unrealistic. A bad joke, should have made it clearer. Anyway learning a lot, thanks so much for this gold dust.
@@merv893 thanks for the feeds back!
unsubscribed, you missed the most obvious one:
folks, all you have to do is to compile a python interpreter (this trivial step will not be elaborated in this comment) and have the python code in a variable. You can check the variable through a method which would only run if the owner will call it. Easy
I feel most won’t get the sarcasm here, lol
if u wanna teach , just teach it the simple way , dont complicate things with hardhat ... just go straight with the codes ...
What do you mean?
@nickeast4853 i think there's a mix up on your end,hardhat is great for solidity development as it provides a way to test the contract and deploy it,but I'd like to learn more on your comment😅
i can't find where { initalize: } is documented to save my life
Nice