restaking-v2: added restaking program with tests

Anchor.toml

@@ -1,27 +1,28 @@
+[toolchain]
+
 [features]
 seeds = false
 skip-lint = false
 
 [programs.devnet]
 restaking = "8n3FHwYxFgQCQc2FNFkwDUf9mcqupxXcCvgfHbApMLv3"
+restaking_v2 = "H69iS4rPnrRAMciLJcpEY3tRtFro7Mo7a2YAU8Q1busv"
 solana_ibc = "2HLLVco5HvwWriNbUhmVwA2pCetRkpgrqwnjcsZdyTKT"
 
 [programs.localnet]
 restaking = "8n3FHwYxFgQCQc2FNFkwDUf9mcqupxXcCvgfHbApMLv3"
+restaking_v2 = "H69iS4rPnrRAMciLJcpEY3tRtFro7Mo7a2YAU8Q1busv"
 solana_ibc = "2HLLVco5HvwWriNbUhmVwA2pCetRkpgrqwnjcsZdyTKT"
 
 [registry]
 url = "https://api.apr.dev"
 
 [provider]
-cluster = "localnet"
-wallet = "~/.config/solana/id.json"
+cluster = "Localnet"
+wallet = "/Users/dhruvjain/.config/solana/id.json"
 
 [workspace]
-members = [
-  "solana/restaking/programs/restaking",
-  "solana/solana-ibc/programs/solana-ibc"
-]
+members = ["solana/restaking/programs/restaking", "solana/solana-ibc/programs/solana-ibc", "solana/restaking-v2/programs/restaking-v2"]
 
 [scripts]
 test = "./solana-test.sh"
@@ -39,3 +40,9 @@ rpc_port = 8899
 
 [[test.validator.clone]]
 address = "metaqbxxUerdq28cj1RbAWkYQm3ybzjb6a8bt518x1s"
+
+[[test.validator.clone]]
+address = "Dpw1EAVrSB1ibxiDQyTAW6Zip3J4Btk2x4SgApQCeFbX"
+
+[[test.validator.clone]]
+address = "7UVimffxr9ow1uXYxsr4LHAcV58mLzhmwaeKvJ1pjLiE"

Cargo.toml

@@ -9,6 +9,7 @@ members = [
     "common/*",
     "solana/allocator",
     "solana/restaking/programs/*",
+    "solana/restaking-v2/programs/*",
     "solana/signature-verifier",
     "solana/solana-ibc/programs/*",
     "solana/trie",
@@ -30,6 +31,7 @@ codegen-units = 1
 [workspace.dependencies]
 anchor-lang = { version = "0.29.0", features = ["init-if-needed"] }
 anchor-spl = "0.29.0"
+anchor-gen = "0.3.1"
 ascii = "1.1.0"
 bs58 = { version = "0.5.0", features = ["alloc"] }
 base64 = { version = "0.21", default-features = false, features = ["alloc"] }
@@ -67,6 +69,7 @@ pretty_assertions = "1.4.0"
 primitive-types = "0.12.2"
 prost = { version = "0.12.3", default-features = false }
 prost-build = { version = "0.12.3", default-features = false }
+pyth-solana-receiver-sdk ="0.1.0"
 rand = { version = "0.8.5" }
 reqwest = "0.12.3"
 # TODO(mina86): Change to "1" once we update the toolchain.  Building

solana-test.sh

@@ -10,5 +10,6 @@ cd ../..
 solana program deploy target/deploy/write.so
 solana program deploy target/deploy/sigverify.so
 cargo test  --lib -- --nocapture --include-ignored ::anchor
+cargo test  --lib -- --nocapture --include-ignored ::restaking
 find solana/restaking/tests/ -name '*.ts' \
      -exec yarn run ts-mocha -p ./tsconfig.json -t 1000000 {} +

solana/restaking-v2/README.md

@@ -0,0 +1,23 @@
+# Restaking V2
+
+This program was built to make it easier to keep track of deposits to the restaking vaults and make use of fungible receipt tokens as opposed to using NFTs in previous version which had a few drawbacks for it to be used as an yield for the rollup.
+
+The drawbacks of the previous restaking program
+- The depositors were given an NFT as a receipt token which meant that there were no partial withdrawals.
+- Since the users could choose the validator to which they deposit to, the token deposited to one validator is different from the token deposited to another validator. Which means if the token is restaked and bridged to the rollup, then there would be a token for each validator even if they are same token. 
+
+For example: JitoSOL deposited to validator A and B would be different on rollup even though it is the same token on Solana.
+
+So the new restaking program was built specifically to support restaking of tokens before bridging to rollup and use fungible receipt tokens.
+These are changes which were introduced in the new version.
+- Users cannot choose which validator they delegate their stake to since their stake is equally divided among the validators specified in the program.
+- If one of the validator gets slashed, the amount is slashed equally among the validators.
+- A fungible receipt token is issued instead of a non fungible one.
+- There is no unbonding period since all the validators get slashed equally.
+- Allow deposits of tokens other than LSTs with the use of oracles.
+
+This program can only be called by the bridge contract. If people just want to restake directly and dont want to bridge, they can do it via restaking-v1 program.
+
+## Oracles
+
+For tokens others than LSTs which have a different value than SOL, we need to use oracle to get their current price and then update the stake. But since the stake is recorded in lamports in the guest chain, everytime the price changes we would need to update the stake. To do this, we store the delegations of the particular token locally and get the price on every interval set during initialization. Every time the price is updated, we calculate the difference and update the price on the guest chain. This would make sure that the stake on guest chain is always up to date. Whenever new deposits are made, it would use the stored price rather than from the oracle. But if the price is stale then the deposit would be rejected. This is a better way of updating the stake using oracle where we need to update it once for all the deposits for a particular token during an interval.

solana/restaking-v2/migrations/deploy.ts

@@ -0,0 +1,12 @@
+// Migrations are an early feature. Currently, they're nothing more than this
+// single deploy script that's invoked from the CLI, injecting a provider
+// configured from the workspace's Anchor.toml.
+
+const anchor = require("@coral-xyz/anchor");
+
+module.exports = async function (provider) {
+  // Configure client to use the provider.
+  anchor.setProvider(provider);
+
+  // Add your deploy script here.
+};

solana/restaking-v2/programs/restaking-v2/Cargo.toml

@@ -0,0 +1,32 @@
+[package]
+name = "restaking_v2"
+version = "0.1.0"
+description = "Created with Anchor"
+edition = "2021"
+
+[lib]
+crate-type = ["cdylib", "lib"]
+name = "restaking_v2"
+
+[features]
+# added so that we can compile this along with `solana-ibc` with mocks features. Currently unused.
+mocks = []
+no-entrypoint = []
+no-idl = []
+no-log-ix-name = []
+cpi = ["no-entrypoint"]
+default = []
+
+[dependencies]
+anchor-lang = { workspace = true, features = ["init-if-needed"] }
+anchor-spl = { workspace = true, features = ["metadata"] }
+solana-ibc = { workspace = true, features = ["cpi"] }
+solana-program.workspace = true
+solana-signature-verifier.workspace = true
+pyth-solana-receiver-sdk.workspace = true
+
+[dev-dependencies]
+anchor-client.workspace = true
+anyhow.workspace = true
+spl-associated-token-account.workspace = true
+spl-token.workspace = true

solana/restaking-v2/programs/restaking-v2/Xargo.toml

@@ -0,0 +1,2 @@
+[target.bpfel-unknown-unknown.dependencies.std]
+features = []