Merge pull request #67 from terra-money/feature/latest_updates

Feature/latest updates

V2CHANGELOG.md

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+# V2 Changelog
+
+## Major Updates
+
+- **User’s Warp-Account Removed:** 
+  - Replaced by job accounts.
+  - `create_job` now creates a job account on the fly in the same transaction.
+  - Users can provide funds in `info.funds` that are relayed to the job account.
+  - Job account is used as a job session throughout job execution.
+  - In case of recurring jobs, the same job account is kept through time.
+    - Required for stateful jobs like trading strategies.
+
+- **Multiple Funding Accounts:** 
+  - Users can create and manage multiple funding accounts.
+  - Funding account is used for distributing rewards to keepers and paying fees.
+  - Otherwise, fees are subtracted from `info.funds`.
+  - Useful for recurring jobs to provide fees and topups on the side.
+
+- **New Fee Mechanism:** 
+  - Introduces a more dynamic and flexible fee calculation system.
+  - Creation Fee: Calculated based on the queue size. 
+  - Maintenance Fee: Determined based on the duration in days.
+  - Burn Fee: Computed from the job reward.
+  - `total_fees = creation_fee + maintenance_fee + burn_fee`
+  - `job cost = total_fees + reward`
+
+- **New Contract Warp-Account-Tracker:** 
+  - Used for management of job accounts and funding accounts.
+  - Holds state for taken and free accounts by job_id.
+
+## API Changes
+
+### Removed
+- `create_job.msgs`
+- `create_job.condition`
+- `create_job.requeue_on_evict`
+
+### Added
+- `create_job.executions`
+  - Array of executions that operate like a switch.
+  - Single execution contains msgs (warp msgs) and condition.
+  - On job execution, the first execution condition that returns true top-down is taken.
+- **Job Accounts with WarpMsg Struct:**
+  - Job accounts now operate with WarpMsg struct.
+  - Previously, warp accounts worked only with cosmos msgs.
+  - WarpMsg:Generic is equivalent to a cosmos msg.
+  - Added support for WarpMsg:WithdrawAssets and WarpMsg:IbcTransfer.
+  - Extensible messaging standard within warp in case custom message formats are needed in the future.
+- `create_job.operational_amount`
+  - Without funding account: `operational_amount` needs to equal `total_fees + reward`.
+  - With funding account: Ignored, can be set to 0.
+- `create_job.duration_days`
+  - Defines job length of stay in the warp queue.
+  - Maintenance fee paid upfront for it based on fee calculations.
+- `create_job.cw_funds`
+  - Optionally passed list of cw20 and cw721 funds to be sent from user to job account.
+- `create_job.funding_account`
+  - Optionally attached funding account from which job fees and rewards are deducted.
+  - Required for recurring jobs.
+  - Optionally provided for one-time jobs.
+- `create_job.account_msgs`
+  - Messages that are executed via job-account on job creation.
+  - Useful for deploying funds to money markets to earn APR while the job waits for execution.
+- **Controller.create_funding_account API:**
+  - Creates a new free funding account for the user.
+- **FnValue StringValue Support:**
+  - Static variable can be initialized with an `init_fn`.
+  - FnValue now supports `StringValue`.
+
+## Fee functions
+
+### Creation Fee
+
+The creation fee (`f(qs)`) is a piecewise function depending on the queue size (`qs`).
+
+```
+f(qs) = 
+  y1, if qs < x1
+  slope * qs + y1 - slope * x1, if x1 <= qs < x2
+  y2, if qs >= x2
+```
+
+Where:
+- `x1` = `config.queue_size_left`
+- `x2` = `config.queue_size_right`
+- `y1` = `config.creation_fee_min`
+- `y2` = `config.creation_fee_max`
+- `slope` = `(y2 - y1) / (x2 - x1)`
+
+### Maintenance Fee
+
+The maintenance fee (`g(dd)`) is structured similarly, based on the duration in days (`dd`).
+
+```
+g(dd) = 
+  y1, if dd < x1
+  slope * dd + y1 - slope * x1, if x1 <= dd < x2
+  y2, if dd >= x2
+```
+
+Where:
+- `x1` = `config.duration_days_min`
+- `x2` = `config.duration_days_max`
+- `slope` = `(y2 - y1) / (x2 - x1)`
+
+### Burn Fee
+
+The burn fee (`h(job_reward)`) is calculated as the maximum between the `calculated_fee` and `min_fee`.
+
+```
+h(job_reward) = 
+  max(calculated_fee, min_fee)
+```
+
+Where:
+- `calculated_fee` = `job_reward * config.burn_fee_rate / 100`
+- `min_fee` = `config.burn_fee_min`
+
+

contracts/warp-account-tracker/.cargo/config

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+[alias]
+wasm = "build --release --target wasm32-unknown-unknown"
+unit-test = "test --lib"
+schema = "run --example warp-account-tracker-schema"

contracts/warp-account-tracker/.gitignore

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+# Build results
+/target
+/schema
+
+# Cargo+Git helper file (https://github.com/rust-lang/cargo/blob/0.44.1/src/cargo/sources/git/utils.rs#L320-L327)
+.cargo-ok
+
+# Text file backups
+**/*.rs.bk
+
+# macOS
+.DS_Store
+
+# IDEs
+*.iml
+.idea

contracts/warp-account-tracker/Cargo.toml

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+[package]
+name = "warp-account-tracker"
+version = "0.1.0"
+authors = ["Terra Money <core@terra.money>"]
+edition = "2021"
+
+exclude = [
+  # Those files are rust-optimizer artifacts. You might want to commit them for convenience but they should not be part of the source code publication.
+  "contract.wasm",
+  "hash.txt",
+]
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[lib]
+crate-type = ["cdylib", "rlib"]
+
+[features]
+# for more explicit tests, cargo test --features=backtraces
+backtraces = ["cosmwasm-std/backtraces"]
+# use library feature to disable all instantiate/execute/query exports
+library = []
+
+[package.metadata.scripts]
+optimize = """docker run --rm -v "${process.cwd()}":/code \
+  -v "${path.join(process.cwd(), "../../", "packages")}":/packages \
+  --mount type=volume,source="${contract}_cache",target=/code/target \
+  --mount type=volume,source=registry_cache,target=/usr/local/cargo/registry \
+  cosmwasm/rust-optimizer${process.env.TERRARIUM_ARCH_ARM64 ? "-arm64" : ""}:0.12.6
+"""
+
+[dependencies]
+cosmwasm-std = "1.1"
+cosmwasm-storage = "1.1"
+cosmwasm-schema = "1.1"
+base64 = "0.13.0"
+cw-asset = "2.2"
+cw-storage-plus = "0.16"
+cw2 = "0.16"
+cw20 = "0.16"
+cw721 = "0.16.0"
+cw-utils = "0.16"
+account-tracker = { path = "../../packages/account-tracker", default-features = false, version = "*" }
+schemars = "0.8"
+thiserror = "1"
+serde-json-wasm = "0.4.1"
+json-codec-wasm = "0.1.0"
+prost = "0.11.9"
+
+[dev-dependencies]
+cw-multi-test = "0.16.0"
+anyhow = "1.0.71"