[OPDATA-4855] Added TokenAccount Support for solana-functions

[chray-zhang]

Closes OPDATA-4855

Description

Originally the solana-functions buffer-layout endpoint only supported MintLayout and SanctumPoolStateLayout. It did not support Token account programs. This change is to add support to deserialize and support Token Accounts

Changes

Implemented: https://solana-labs.github.io/solana-program-library/token/js/variables/AccountLayout.html

Steps to Test

Token Account:

chrayzhang@MB-C3H04RT9WT ~ % curl -X POST http://localhost:8080 \
  -H "Content-Type: application/json" \
  -d '{
    "data": {
      "endpoint": "buffer-layout",
      "field": "amount",
      "stateAccountAddress": "FvkbfMm98jefJWrqkvXvsSZ9RFaRBae8k6c1jaYA5vY3"
    }
  }' | jq
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   497  100   336  100   161    271    130  0:00:01  0:00:01 --:--:--   401
{
  "data": {
    "result": "34228815152"
  },
  "statusCode": 200,
  "result": "34228815152",
  "timestamps": {
    "providerDataRequestedUnixMs": 1764628385812,
    "providerDataReceivedUnixMs": 1764628386096
  },
  "meta": {
    "adapterName": "SOLANA_FUNCTIONS",
    "metrics": {
      "feedId": "{\"stateAccountAddress\":\"fvkbfmm98jefjwrqkvxvssz9rfarbae8k6c1jaya5vy3\",\"field\":\"amount\"}"
    }
  }
}

Mint account:

chrayzhang@MB-C3H04RT9WT ~ % curl -X POST http://localhost:8080 \
  -H "Content-Type: application/json" \
  -d '{
    "data": {
      "endpoint": "buffer-layout",
      "field": "supply",
      "stateAccountAddress": "3b8X44fLF9ooXaUm3hhSgjpmVs6rZZ3pPoGnGahc3Uu7"
    }
  }' | jq
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   497  100   336  100   161   1635    783 --:--:-- --:--:-- --:--:--  2424
{
  "data": {
    "result": "34156329357"
  },
  "statusCode": 200,
  "result": "34156329357",
  "timestamps": {
    "providerDataRequestedUnixMs": 1764628429970,
    "providerDataReceivedUnixMs": 1764628430044
  },
  "meta": {
    "adapterName": "SOLANA_FUNCTIONS",
    "metrics": {
      "feedId": "{\"stateAccountAddress\":\"3b8x44flf9ooxaum3hhsgjpmvs6rzz3ppogngahc3uu7\",\"field\":\"supply\"}"
    }
  }
}

Quality Assurance

• [ x] If a new adapter was made, or an existing one was modified so that its environment variables have changed, update the relevant infra-k8s configuration file.
• [ x] If a new adapter was made, or an existing one was modified so that its environment variables have changed, update the relevant adapter-secrets configuration file.
• [ x] If a new adapter was made, or a new endpoint was added, update the test-payload.json file with relevant requests.
• [ x] The branch naming follows git flow (feature/x, chore/x, release/x, hotfix/x, fix/x) or is created from Jira.
• [ x] This is related to a maximum of one Jira story or GitHub issue.
• [ x] Types are safe (avoid TypeScript/TSLint features like any and disable, instead use more specific types).
• [ x] All code changes have 100% unit and integration test coverage. If testing is not applicable or too difficult to justify doing, the reasoning should be documented explicitly in the PR.

[changeset-bot]

🦋 Changeset detected

Latest commit: e9a5a9f

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@chainlink/solana-functions-adapter	Minor

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[dskloetc]

This PR is not necessary because you can get the data you want using the extension endpoint as I described here: https://chainlink-core.slack.com/archives/C09N0DEH6M8/p1764661162177669?thread_ts=1764082643.124029&cid=C09N0DEH6M8

But if you want to extend the buffer-layout endpoint to support AccountLayout, let's check the layout.span instead of hard coding the lengths.
We can just provide an array of layouts for each program address in the map and loop to find the one with the correct length.