[Tech]: Add limit to buy and sell functions for synthetic assets

sora-xor / sora2-network

SORA is a new economic system aimed at creating a supranational, world economic system with built-in tools for decentralized finance (DeFi). The SORA network implements a new way of parachain architecture on Polkadot and Kusama network, with the capability to bridge external blockchains (like Ethereum) to the Polkadot ecosystem.

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Problem statement

To mitigate the risk of manipulation on synthetics, we want to add a limit to the amount of XST that can be bought or sold at the beginning of the launch of the synthetic platform.

We will get rid of the limitation in the future.

Description

We will add a limit of 10 million on the base asset (XST) when buying or selling synthetic assets.

If the quote on the trade for a synthetic asset involves more than 10 million XST, we should return an error.

Definition of Done

[x] add limit of 10 million XST on the buy and sell functions for synthetic assets for the release
[x] add constant specifying the limit for maximum tradable amount of XST (required by frontend team)

sora-xor / sora2-network