From 5a47d23743d5c290a802fc7d92449bf42743a0cd Mon Sep 17 00:00:00 2001
From: lesniak43 <lesniak43@gmail.com>
Date: Mon, 7 Oct 2024 10:52:12 +0200
Subject: [PATCH] L1-290: Set the inflation parameters (#1820)

# Description

The Community has decided that the AZERO cap should be equal to 520M
AZERO, and the first year issuance equal to 27M AZERO.

The launch of the new inflation model is scheduled for October 14th. The
estimated total issuance at launch date is 373,948,365 AZERO.

Thus, the inflation horizon is set to 154,283,512,497 milliseconds
(approx. 1785 days).

## Type of change

- Breaking change (fix or feature that would cause existing
functionality to not work as expected)

# Checklist:

- I have added tests
---
 aleph-client/src/aleph_zero.rs   | 22 +++++++++++-----------
 e2e-tests/src/test/era_payout.rs |  8 ++++----
 pallets/aleph/src/lib.rs         |  5 ++---
 3 files changed, 17 insertions(+), 18 deletions(-)

diff --git a/aleph-client/src/aleph_zero.rs b/aleph-client/src/aleph_zero.rs
index 3fde2708ea..8c75b15c46 100644
--- a/aleph-client/src/aleph_zero.rs
+++ b/aleph-client/src/aleph_zero.rs
@@ -2076,9 +2076,9 @@ pub mod api {
             .hash();
         runtime_metadata_hash
             == [
-                111u8, 233u8, 121u8, 88u8, 247u8, 52u8, 135u8, 105u8, 167u8, 108u8, 97u8, 139u8,
-                177u8, 122u8, 62u8, 130u8, 3u8, 106u8, 117u8, 91u8, 223u8, 244u8, 111u8, 47u8,
-                35u8, 184u8, 0u8, 203u8, 98u8, 253u8, 156u8, 92u8,
+                46u8, 76u8, 121u8, 124u8, 214u8, 182u8, 28u8, 12u8, 114u8, 169u8, 159u8, 10u8,
+                128u8, 9u8, 179u8, 188u8, 124u8, 56u8, 110u8, 108u8, 24u8, 15u8, 236u8, 3u8, 213u8,
+                142u8, 207u8, 48u8, 23u8, 113u8, 170u8, 43u8,
             ]
     }
     pub mod system {
@@ -9517,10 +9517,10 @@ pub mod api {
                         "AzeroCap",
                         vec![],
                         [
-                            68u8, 239u8, 10u8, 241u8, 109u8, 153u8, 129u8, 3u8, 237u8, 251u8,
-                            251u8, 221u8, 156u8, 81u8, 117u8, 166u8, 101u8, 196u8, 227u8, 176u8,
-                            209u8, 123u8, 127u8, 146u8, 252u8, 88u8, 138u8, 227u8, 183u8, 117u8,
-                            148u8, 36u8,
+                            232u8, 50u8, 48u8, 200u8, 187u8, 205u8, 197u8, 195u8, 172u8, 140u8,
+                            72u8, 253u8, 63u8, 190u8, 23u8, 70u8, 154u8, 96u8, 238u8, 203u8, 39u8,
+                            129u8, 219u8, 220u8, 119u8, 214u8, 95u8, 174u8, 65u8, 80u8, 25u8,
+                            156u8,
                         ],
                     )
                 }
@@ -9538,10 +9538,10 @@ pub mod api {
                         "ExponentialInflationHorizon",
                         vec![],
                         [
-                            7u8, 241u8, 156u8, 243u8, 174u8, 255u8, 212u8, 252u8, 53u8, 59u8,
-                            145u8, 100u8, 166u8, 17u8, 167u8, 127u8, 41u8, 227u8, 188u8, 149u8,
-                            207u8, 61u8, 65u8, 215u8, 42u8, 241u8, 18u8, 145u8, 24u8, 123u8, 1u8,
-                            65u8,
+                            96u8, 228u8, 98u8, 28u8, 209u8, 210u8, 67u8, 181u8, 1u8, 111u8, 174u8,
+                            131u8, 254u8, 131u8, 238u8, 112u8, 243u8, 203u8, 160u8, 240u8, 65u8,
+                            141u8, 108u8, 235u8, 114u8, 44u8, 115u8, 114u8, 135u8, 217u8, 90u8,
+                            63u8,
                         ],
                     )
                 }
diff --git a/e2e-tests/src/test/era_payout.rs b/e2e-tests/src/test/era_payout.rs
index 1b223ca1ee..911c515fc2 100644
--- a/e2e-tests/src/test/era_payout.rs
+++ b/e2e-tests/src/test/era_payout.rs
@@ -69,8 +69,8 @@ async fn force_era_payout(config: &Config) -> anyhow::Result<()> {
     // These must be adjusted every time we change the default values of:
     // * AzeroCap
     // * ExponentialInflationHorizon
-    let expected_payout = 1776 * TOKEN;
-    let delta = 3 * TOKEN;
+    let expected_payout = 114 * TOKEN;
+    let delta =  TOKEN;
 
     assert_within_delta_interval(
         expected_era_duration,
@@ -101,8 +101,8 @@ async fn normal_era_payout(config: &Config) -> anyhow::Result<()> {
     // These must be adjusted every time we change the default values of:
     // * AzeroCap
     // * ExponentialInflationHorizon
-    let expected_payout = 1776 * TOKEN;
-    let delta = 3 * TOKEN;
+    let expected_payout = 114 * TOKEN;
+    let delta = TOKEN;
 
     assert_within_delta_interval(
         expected_era_duration,
diff --git a/pallets/aleph/src/lib.rs b/pallets/aleph/src/lib.rs
index 96eccdad58..5af3b9c3ac 100644
--- a/pallets/aleph/src/lib.rs
+++ b/pallets/aleph/src/lib.rs
@@ -73,15 +73,14 @@ pub mod pallet {
     /// Default AZERO Cap. Relevant for eras before we set this value by hand.
     #[pallet::type_value]
     pub fn DefaultAzeroCap() -> Balance {
-        1_000_000_000 * TOKEN
+        520_000_000 * TOKEN
     }
 
     /// Default length of the exponential inflation horizon.
     /// Relevant for eras before we set this value by hand.
     #[pallet::type_value]
     pub fn DefaultExponentialInflationHorizon() -> u64 {
-        const MILLISECS_PER_YEAR: u64 = 1000 * 3600 * 24 * 36525 / 100;
-        MILLISECS_PER_YEAR
+        154_283_512_497
     }
 
     #[pallet::storage]