A delegator creates a fixed delegation

Source: subscriptions/tests/test_create_fixed_delegation.rs L206

• When: the user initializes a subscription authority
• When: a fixed delegation is created
• Then: the fixed delegation is created ✓
• Then: fixedDelegation.header.delegator = 2rj1EEgg32bupe12mMYnPFaKQCPPyYBhKYmDFZ8cXxpT ✓
• Then: fixedDelegation.header.delegatee = 111FJo4zLAGU9nzTWa6EnbV4VAmtG4FR8kcokrtZYr ✓
• Then: fixedDelegation.header.discriminator = 2 ✓
• Then: fixedDelegation.amount = 100000000 ✓
• Then: fixedDelegation.expiryTs = 86400 ✓

Result: ✓ success — 6538 CU · claims 6/6 ✓

sequenceDiagram
    participant p0 as alice
    participant p1 as Subscriptions
    participant p2 as system
    p0->>p1: createFixedDelegation
    activate p1
    p1->>p2: createAccount
    activate p2
    p2-->>p1: ✓
    deactivate p2
    p1-->>p0: ✓ 6538cu
    deactivate p1

Authority

flowchart LR
    Subscriptions["Subscriptions"]:::program
    alice(["alice"]):::signer
    7JW9(["7JW9…"]):::signer
    system["system"]:::program
    alice -->|signs| Subscriptions
    Subscriptions -->|writes| 7JW9
    alice -->|signs| system
    7JW9 -->|signs| system
    classDef program fill:#dae8fc,stroke:#6c8ebf;
    classDef signer fill:#d5e8d4,stroke:#82b366;
    classDef state fill:#ffe6cc,stroke:#d79b00;

Ownership

flowchart LR
    system["system"]:::program
    alice[("alice")]:::state
    Subscriptions["Subscriptions"]:::program
    7JW9[("7JW9…")]:::state
    system -->|owns| alice
    Subscriptions -->|owns| 7JW9
    classDef program fill:#dae8fc,stroke:#6c8ebf;
    classDef signer fill:#d5e8d4,stroke:#82b366;
    classDef state fill:#ffe6cc,stroke:#d79b00;

Accounts

A delegator creates a fixed delegation
alice (6538cu)
└─ Subscriptions::createFixedDelegation ✓ 6538cu
   └─ system::createAccount ✓

Program De1egAFMkMWZSN5rYXRj9CAdheBamobVNubTsi9avR44 invoke [1]
Program 11111111111111111111111111111111 invoke [2]
Program 11111111111111111111111111111111 success
Program De1egAFMkMWZSN5rYXRj9CAdheBamobVNubTsi9avR44 consumed 6538 of 200000 compute units
Program De1egAFMkMWZSN5rYXRj9CAdheBamobVNubTsi9avR44 success

Integration

What an integrator writes: the derivations and the instruction, byte-identical to the transaction this page witnessed. Addresses are this scenario’s; supply your own.

#![allow(unused)]
fn main() {
use solana_instruction::{AccountMeta, Instruction};
use solana_pubkey::{pubkey, Pubkey};

// --- createFixedDelegation ---
let program_id: Pubkey = pubkey!("De1egAFMkMWZSN5rYXRj9CAdheBamobVNubTsi9avR44");
let delegator: Pubkey = pubkey!("2rj1EEgg32bupe12mMYnPFaKQCPPyYBhKYmDFZ8cXxpT"); // alice: this scenario's value; supply your own
let subscription_authority: Pubkey = pubkey!("4RDKDQRnKtZC5ti4wunSAayArwxdZida5St595CiKJ7i"); // SA(alice, Mint): this scenario's value; supply your own
let delegation_account: Pubkey = pubkey!("7JW9nfbPZbx3UQUbDA69x9D9Tytmmh23p7wYJ6Eq9RWM"); // supply your own
let delegatee: Pubkey = pubkey!("111FJo4zLAGU9nzTWa6EnbV4VAmtG4FR8kcokrtZYr"); // supply your own
let system_program: Pubkey = pubkey!("11111111111111111111111111111111"); // the system program
let ix = Instruction {
    program_id,
    accounts: vec![
        AccountMeta::new(delegator, true), // delegator
        AccountMeta::new_readonly(subscription_authority, false), // subscriptionAuthority
        AccountMeta::new(delegation_account, false), // delegationAccount
        AccountMeta::new_readonly(delegatee, false), // delegatee
        AccountMeta::new_readonly(system_program, false), // systemProgram
    ],
    // discriminator ++ borsh(fixedDelegation: {nonce: 0, amount: 100000000, expiryTs: 86400, expectedSubscriptionAuthorityInitId: 0})
    data: vec![0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe1, 0xf5, 0x05, 0x00, 0x00, 0x00, 0x00, 0x80, 0x51, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],
};
}

The same call through the Codama-generated TypeScript client (the async builder derives every PDA the resolver derived here, so only the free inputs appear):

import { address } from "@solana/kit";
import { getCreateFixedDelegationInstructionAsync } from "your-generated-client";

const ix = await getCreateFixedDelegationInstructionAsync({
  delegator: delegatorSigner, // alice (a TransactionSigner)
  subscriptionAuthority: address("4RDKDQRnKtZC5ti4wunSAayArwxdZida5St595CiKJ7i"), // SA(alice, Mint)
  delegationAccount: address("7JW9nfbPZbx3UQUbDA69x9D9Tytmmh23p7wYJ6Eq9RWM"),
  delegatee: address("111FJo4zLAGU9nzTWa6EnbV4VAmtG4FR8kcokrtZYr"),
  // systemProgram defaults to the system program
  fixedDelegation: {
    nonce: 0n,
    amount: 100000000n,
    expiryTs: 86400n,
    expectedSubscriptionAuthorityInitId: 0n
  },
});

#![allow(unused)]
fn main() {
#[test]
fn create_fixed_delegation() {
    let mut story = Story::load(SO, IDL);
    let payer = story.cast("alice");
    let amount: u64 = 100_000_000;
    let expiry_ts = story.now() + days(1) as i64;
    let nonce: u64 = 0;

    let mint = story.mint(&payer, MINT_DECIMALS);
    story.fund(&payer, &[(mint, 1_000_000)]);
    init(&mut story, &payer, mint);

    let delegatee = Pubkey::new_unique();
    let delegation_pda = story.delegation_pda(&payer.pubkey(), &mint, &delegatee, nonce);

    let out = story.create_fixed_delegation(CreateFixedArgs {
        delegator: &payer,
        mint,
        delegatee,
        nonce,
        amount,
        expiry_ts,
        sponsor: None,
        expected_init_id: None,
        delegation_override: None,
    });
    story.then_holds("the fixed delegation is created", out.success);

    let delegator =
        story.track_field::<Pubkey>("fixedDelegation", delegation_pda, "header.delegator");
    let delegatee_field =
        story.track_field::<Pubkey>("fixedDelegation", delegation_pda, "header.delegatee");
    let discriminator =
        story.track_field::<u8>("fixedDelegation", delegation_pda, "header.discriminator");
    let amount_field = story.track_field::<u64>("fixedDelegation", delegation_pda, "amount");
    let expiry = story.track_field::<i64>("fixedDelegation", delegation_pda, "expiryTs");

    story.then_eq(&delegator, payer.pubkey());
    story.then_eq(&delegatee_field, delegatee);
    story.then_eq(&discriminator, TAG_FIXED_DELEGATION);
    story.then_eq(&amount_field, amount);
    story.then_eq(&expiry, expiry_ts);
    emit_scenario(&story, &out, "A delegator creates a fixed delegation");
}
}