docs: enhance the era markers runbook

Author: jpraynaud

docs/runbook/era-markers/README.md

@@ -4,7 +4,8 @@
 
 This is the process for storing Mithril activation eras markers on the Cardano chain (bootstrap and update operations).
 
-:warning: The process described in this document can lead to disturbed service of the associated Mihtril network. Thus it should be manipulated by experts only.
+> [!IMPORTANT]
+> :fire: The process described in this document can lead to disturbed service of the associated Mihtril network. Thus it should be manipulated by experts only.
 
 ## Pre-requisites
 
@@ -16,36 +17,119 @@ This is the process for storing Mithril activation eras markers on the Cardano c
 
 ## Setup
 
+### Setup environment variables
+
 Export the environment variables needed to complete the process:
 
 ```bash
-$ export CARDANO_NODE_SOCKET_PATH=**PATH_TO_YOUR_NODE_SOCKET**
-$ export CARDANO_TESTNET_MAGIC=**YOUR_TESTNET_MAGIC**
-$ export CARDANO_WALLET_PATH=**PATH_TO_YOUR_KEYPAIRS**
-$ export ERA_ACTIVATION_SECRET_KEY=**YOUR_ERA_ACTIVATION_SECRET_KEY**
-$ export ASSETS_PATH=**YOUR_ASSETS_PATH**
+export CARDANO_CLI=**CARDANO_CLI_COMMAND**
+export CARDANO_NODE_SOCKET_PATH=**PATH_TO_YOUR_NODE_SOCKET**
+export CARDANO_WALLET_PATH=**PATH_TO_YOUR_KEYPAIRS**
+export ERA_ACTIVATION_SECRET_KEY=**YOUR_ERA_ACTIVATION_SECRET_KEY**
+export ASSETS_PATH=**YOUR_ASSETS_PATH**
+export SCRIPT_TX_VALUE=**MINIUM_SCRIPT_TX_VALUE**
+```
+
+A common value for the transaction amount used when a script transaction is made is:
+
+```bash
+export SCRIPT_TX_VALUE=2000000
+```
+
+Compute the network magic parameter that handles both the Cardano mainnet and Cardano test networks:
+
+- If this is for a testing network
+
+```bash
+export CARDANO_TESTNET_MAGIC=**YOUR_TESTNET_MAGIC**
+export CARDANO_NETWORK_MAGIC="--testnet-magic $CARDANO_TESTNET_MAGIC"
+```
+
+- If this is for the `mainnet`
+
+```bash
+export CARDANO_NETWORK_MAGIC="--mainnet"
 ```
 
 Compute the current Cardano era:
 
 ```bash
-CARDANO_ERA=$(cardano-cli query tip --testnet-magic $CARDANO_TESTNET_MAGIC | jq  -r '.era |= ascii_downcase | .era')
+export CARDANO_ERA=$($CARDANO_CLI query tip $CARDANO_NETWORK_MAGIC --socket-path $CARDANO_NODE_SOCKET_PATH | jq  -r '.era |= ascii_downcase | .era')
+```
+
+### Prepare era markers
+
+> [!IMPORTANT]
+> :fire: A misconfiguration of the era markers can cause disturbed service on a Mithril network. The `CURRENT_ERA_EPOCH` and `NEXT_ERA_EPOCH` must be selected very cautiously.
+
+#### If there is only one supported era
+
+Set the epoch at which the era is active:
+
+```bash
+export CURRENT_ERA_EPOCH=**ERA_FIRST_ACTIVATION_EPOCH**
+```
+
+Create the datum file for a unique era:
+
+```bash
+./mithril-aggregator era generate-tx-datum --current-era-epoch $CURRENT_ERA_EPOCH --era-markers-secret-key $ERA_ACTIVATION_SECRET_KEY --target-path $ASSETS_PATH/mithril-era-datum.json
 ```
 
-Set the transaction amount used when a script transaction is made:
+#### If there are two supported era
+
+Set the epoch at which the current era and the next era are active (the `CURRENT_ERA_EPOCH` must be lower than the current epoch and the `NEXT_ERA_EPOCH` must be set to a strictly greater epoch than the current epoch):
 
 ```bash
-$ export SCRIPT_TX_VALUE=2000000
+export CURRENT_ERA_EPOCH=**CURRENT_ERA_FIRST_ACTIVATION_EPOCH**
+export NEXT_ERA_EPOCH=**NEXT_ERA_FIRST_ACTIVATION_EPOCH**
+```
+
+Create the datum file for two eras:
+
+```bash
+./mithril-aggregator era generate-tx-datum --current-era-epoch $CURRENT_ERA_EPOCH --next-era-epoch $NEXT_ERA_EPOCH --era-markers-secret-key $ERA_ACTIVATION_SECRET_KEY --target-path $ASSETS_PATH/mithril-era-datum.json
+```
+
+#### Verify the produced era marker
+
+> [!IMPORTANT]
+> :fire: The `mithril-aggregator` binary used to create the era markers must imperatively be compiled with all the targeted supported eras.
+
+Verify that the produced era markers are exactly what is expected with the following command:
+
+```bash
+cat $ASSETS_PATH/mithril-era-datum.json| jq -r '.fields[].bytes' | tr '\n' ' ' | xxd -r -p | jq
+```
+
+An example output of the command is:
+
+```json
+{
+  "markers": [
+    {
+      "name": "thales",
+      "epoch": 1
+    },
+    {
+      "name": "pythagoras",
+      "epoch": 723
+    }
+  ],
+  "signature": "fdcd45debabc148ef11c0bf71e42b7e583102dd5b8e486cd621a18e56136a57ff4f7bf9d036aed6148328a30a20eb6e79422ea4d1cc613e0bf97e14da64a5f00"
+}
 ```
 
 ## Bootstrap Era Markers: Write a transaction with the first version of datum on chain
 
-:warning: This step must be done only once for an address
+> [!IMPORTANT]
+> :fire: This step must be done only once for an address when no prior datum has been written in a UTxO.
+> Otherwise, you need to refer to this [section](#update-era-markers-write-a-new-version-of-datum-on-chain)
 
 Verify that the payment address has funds:
 
 ```bash
-$ cardano-cli query utxo --address $(cat $CARDANO_WALLET_PATH/payment.addr) --testnet-magic $CARDANO_TESTNET_MAGIC
+$CARDANO_CLI query utxo --address $(cat $CARDANO_WALLET_PATH/payment.addr) $CARDANO_NETWORK_MAGIC --socket-path $CARDANO_NODE_SOCKET_PATH
                            TxHash                                 TxIx        Amount
 --------------------------------------------------------------------------------------
 f0c0345f151f9365fbbb4e7afa217e56b987d9e91fd754ca609d9dfec97275c7     0        10000000000 lovelace + TxOutDatumNone
@@ -54,57 +138,53 @@ f0c0345f151f9365fbbb4e7afa217e56b987d9e91fd754ca609d9dfec97275c7     0        10
 And create the variable `TX_IN={TxHash}#{TxIn}` by replacing with values from the previous command:
 
 ```bash
-$ TX_IN=f0c0345f151f9365fbbb4e7afa217e56b987d9e91fd754ca609d9dfec97275c7#0
-```
-
-Create the initial datum file:
-
-```bash
-$ ./mithril-aggregator era generate-tx-datum --current-era-epoch 1 --era-markers-secret-key $ERA_ACTIVATION_SECRET_KEY --target-path $ASSETS_PATH/mithril-era-datum-1.json
+TX_IN=f0c0345f151f9365fbbb4e7afa217e56b987d9e91fd754ca609d9dfec97275c7#0
 ```
 
 Now create the bootstrap transaction with datum:
 
 ```bash
-$ cardano-cli $CARDANO_ERA transaction build --testnet-magic $CARDANO_TESTNET_MAGIC \
+$CARDANO_CLI $CARDANO_ERA transaction build $CARDANO_NETWORK_MAGIC \
     --tx-in $TX_IN \
     --tx-out $(cat $CARDANO_WALLET_PATH/payment.addr)+$SCRIPT_TX_VALUE \
-    --tx-out-inline-datum-file $ASSETS_PATH/mithril-era-datum-1.json \
+    --tx-out-inline-datum-file $ASSETS_PATH/mithril-era-datum.json \
     --change-address $(cat $CARDANO_WALLET_PATH/payment.addr) \
-    --out-file $ASSETS_PATH/tx.raw
+    --out-file $ASSETS_PATH/tx.raw \
+    --socket-path $CARDANO_NODE_SOCKET_PATH
 Estimated transaction fee: Lovelace 168669
 ```
 
 Then sign the transaction:
 
 ```bash
-$ cardano-cli $CARDANO_ERA transaction sign \
+$CARDANO_CLI $CARDANO_ERA transaction sign \
     --tx-body-file $ASSETS_PATH/tx.raw \
     --signing-key-file $CARDANO_WALLET_PATH/payment.skey \
-    --testnet-magic $CARDANO_TESTNET_MAGIC \
+    $CARDANO_NETWORK_MAGIC \
     --out-file $ASSETS_PATH/tx.signed
 ```
 
 And submit it:
 
 ```bash
-$ cardano-cli $CARDANO_ERA transaction submit \
-    --testnet-magic $CARDANO_TESTNET_MAGIC \
-    --tx-file $ASSETS_PATH/tx.signed
+$CARDANO_CLI $CARDANO_ERA transaction submit \
+    $CARDANO_NETWORK_MAGIC \
+    --tx-file $ASSETS_PATH/tx.signed \
+    --socket-path $CARDANO_NODE_SOCKET_PATH
 Transaction successfully submitted.
 ```
 
 Also get the transaction id:
 
 ```bash
-$ cardano-cli transaction txid --tx-file $ASSETS_PATH/tx.signed
+$CARDANO_CLI transaction txid --tx-file $ASSETS_PATH/tx.signed
 6518b3cea0b49b55746ec61148e7c60ab042959d534f6bb6e8f6a844d4af69fb
 ```
 
 We need to wait a few seconds before the transaction is available and we can see the initial datum for the script address:
 
 ```bash
-$ cardano-cli query utxo --address $(cat $CARDANO_WALLET_PATH/payment.addr) --testnet-magic $CARDANO_TESTNET_MAGIC
+$CARDANO_CLI query utxo --address $(cat $CARDANO_WALLET_PATH/payment.addr) $CARDANO_NETWORK_MAGIC --socket-path $CARDANO_NODE_SOCKET_PATH
                            TxHash                                 TxIx        Amount
 --------------------------------------------------------------------------------------
 6518b3cea0b49b55746ec61148e7c60ab042959d534f6bb6e8f6a844d4af69fb     0        1500000 lovelace + TxOutDatumInline ReferenceTxInsScriptsInlineDatumsInBabbageEra (ScriptDataConstructor 0 [ScriptDataBytes "[{\"n\":\"thales\",\"e\":1}]",ScriptDataBytes "\165\143\232\227\&6\244e\222\211\187\167\197\167\175\229\181\162o/\182[|Nnt.h\ACKE\241=\242\139\242\182:a\204r\217\200&\190I\SO,\US\DLE\152\217U\223P5\128\164\232\153\181\ETB8\132\227\SO"])
@@ -116,7 +196,7 @@ Optional: We can retrieve the initial value stored in the datum with the cardano
 The full utxo json representation:
 
 ```bash
-$ cardano-cli query utxo --address $(cat $CARDANO_WALLET_PATH/payment.addr) --testnet-magic $CARDANO_TESTNET_MAGIC --out-file temp.json && cat temp.json | jq '. [] | select(.inlineDatum | . != null and . != "")'
+$CARDANO_CLI query utxo --address $(cat $CARDANO_WALLET_PATH/payment.addr) $CARDANO_NETWORK_MAGIC --socket-path $CARDANO_NODE_SOCKET_PATH --out-file temp.json && cat temp.json | jq '. [] | select(.inlineDatum | . != null and . != "")'
 {
   "address": "addr_test1qzzngukkj9ydjemqjlgfn42sevy2xnvauay46weushlpuq9thd4ray00csjssf4sxftv04xeequ3xfx72nujg9y4d5ysgkxxlh",
   "datum": null,
@@ -141,12 +221,14 @@ $ cardano-cli query utxo --address $(cat $CARDANO_WALLET_PATH/payment.addr) --te
 
 ## Update Era Markers: Write a new version of datum on chain
 
-:warning: This step must be used anytime the era markers must be updated on chain
+> [!IMPORTANT]
+> :fire: This step must be used anytime the era markers must be updated on chain for an address when prior datum has already been written in a UTxO.
+> Otherwise, you need to refer to this [section](#bootstrap-era-markers-write-a-transaction-with-the-first-version-of-datum-on-chain)
 
 Retrieve the utxo of the payment address:
 
 ```bash
-$ cardano-cli query utxo --address $(cat $CARDANO_WALLET_PATH/payment.addr) --testnet-magic $CARDANO_TESTNET_MAGIC
+$CARDANO_CLI query utxo --address $(cat $CARDANO_WALLET_PATH/payment.addr) $CARDANO_NETWORK_MAGIC --socket-path $CARDANO_NODE_SOCKET_PATH
                            TxHash                                 TxIx        Amount
 --------------------------------------------------------------------------------------
 6518b3cea0b49b55746ec61148e7c60ab042959d534f6bb6e8f6a844d4af69fb     0        1500000 lovelace + TxOutDatumInline ReferenceTxInsScriptsInlineDatumsInBabbageEra (ScriptDataConstructor 0 [ScriptDataBytes "[{\"n\":\"thales\",\"e\":1}]",ScriptDataBytes "\165\143\232\227\&6\244e\222\211\187\167\197\167\175\229\181\162o/\182[|Nnt.h\ACKE\241=\242\139\242\182:a\204r\217\200&\190I\SO,\US\DLE\152\217U\223P5\128\164\232\153\181\ETB8\132\227\SO"])
@@ -156,66 +238,60 @@ $ cardano-cli query utxo --address $(cat $CARDANO_WALLET_PATH/payment.addr) --te
 And create the variable `TX_IN_DATUM={TxHash}#{TxIn}` by replacing with values from the previous command (where inline datumn are available):
 
 ```bash
-$ TX_IN_DATUM=6518b3cea0b49b55746ec61148e7c60ab042959d534f6bb6e8f6a844d4af69fb#0
+TX_IN_DATUM=6518b3cea0b49b55746ec61148e7c60ab042959d534f6bb6e8f6a844d4af69fb#0
 ```
 
 And create the variable `TX_IN_NO_DATUM={TxHash}#{TxIn}` by replacing with values from the previous command (where inline datumn are not available):
 
 ```bash
-$ TX_IN_NO_DATUM=6518b3cea0b49b55746ec61148e7c60ab042959d534f6bb6e8f6a844d4af69fb#1
-```
-
-Create the updated datum file:
-
-:warning: The options provided in the following command are for example only, you need to use adequately the options of the `era generate-tx-datum` command, which will depend on the operation you want to execute: announce an upcoming era or activate an upcoming era. This operation should be done very cautiously as a misconfiguration can lead to disturbed service of the network.
-
-```bash
-$ ./mithril-aggregator era generate-tx-datum --current-era-epoch 1 --era-markers-secret-key $ERA_ACTIVATION_SECRET_KEY --target-path $ASSETS_PATH/mithril-era-datum-2.json
+TX_IN_NO_DATUM=6518b3cea0b49b55746ec61148e7c60ab042959d534f6bb6e8f6a844d4af69fb#1
 ```
 
 Now create the update transaction with datum:
 
 ```bash
-$ cardano-cli $CARDANO_ERA transaction build --testnet-magic $CARDANO_TESTNET_MAGIC \
+$CARDANO_CLI $CARDANO_ERA transaction build $CARDANO_NETWORK_MAGIC \
     --tx-in $TX_IN_DATUM \
     --tx-in $TX_IN_NO_DATUM \
     --tx-out $(cat $CARDANO_WALLET_PATH/payment.addr)+$SCRIPT_TX_VALUE \
-    --tx-out-inline-datum-file $ASSETS_PATH/mithril-era-datum-2.json \
+    --tx-out-inline-datum-file $ASSETS_PATH/mithril-era-datum.json \
     --change-address $(cat $CARDANO_WALLET_PATH/payment.addr) \
-    --out-file $ASSETS_PATH/tx.raw
+    --out-file $ASSETS_PATH/tx.raw \
+    --socket-path $CARDANO_NODE_SOCKET_PATH
 Estimated transaction fee: Lovelace 179889
 ```
 
 Then sign the transaction:
 
 ```bash
-$ cardano-cli $CARDANO_ERA transaction sign \
+$CARDANO_CLI $CARDANO_ERA transaction sign \
     --tx-body-file $ASSETS_PATH/tx.raw \
     --signing-key-file $CARDANO_WALLET_PATH/payment.skey \
-    --testnet-magic $CARDANO_TESTNET_MAGIC \
+    $CARDANO_NETWORK_MAGIC \
     --out-file $ASSETS_PATH/tx.signed
 ```
 
 And submit it:
 
 ```bash
-$ cardano-cli $CARDANO_ERA transaction submit \
-    --testnet-magic $CARDANO_TESTNET_MAGIC \
-    --tx-file $ASSETS_PATH/tx.signed
+$CARDANO_CLI $CARDANO_ERA transaction submit \
+    $CARDANO_NETWORK_MAGIC \
+    --tx-file $ASSETS_PATH/tx.signed \
+    --socket-path $CARDANO_NODE_SOCKET_PATH
 Transaction successfully submitted.
 ```
 
 Also get the transaction id:
 
 ```bash
-$ cardano-cli transaction txid --tx-file $ASSETS_PATH/tx.signed
+$CARDANO_CLI transaction txid --tx-file $ASSETS_PATH/tx.signed
 1fd4d3e131afe3c8b212772a3f3083d2fbc6b2a7b20e54e4ff08e001598818d8
 ```
 
 We need to wait a few seconds before the transaction is available and we can see the updated datum for the script address:
 
 ```bash
-$ cardano-cli query utxo --address $(cat $CARDANO_WALLET_PATH/payment.addr) --testnet-magic $CARDANO_TESTNET_MAGIC
+$CARDANO_CLI query utxo --address $(cat $CARDANO_WALLET_PATH/payment.addr) $CARDANO_NETWORK_MAGIC --socket-path $CARDANO_NODE_SOCKET_PATH
                            TxHash                                 TxIx        Amount
 --------------------------------------------------------------------------------------
 1f139b47017c9c90d4622ac768e249d25d37ad4461db44a20486b7da72a78915     0        2000000 lovelace + TxOutDatumInline ReferenceTxInsScriptsInlineDatumsInBabbageEra (ScriptDataConstructor 0 [ScriptDataBytes "[{\"n\":\"thales\",\"e\":1},{\"n\":\"pythagoras\",\"e\":null}]",ScriptDataBytes "^P\EOT\248k3\196/\139\tU\173H\138\FS\194MD\240\153\227\142z\181\134\213\168\&2\222\219i1\246\NAK\\]\247\154U\143-^vmtq\204\207#\236\213\f\201\&1\152\145(\161\ETX;\183\128\195\r"])
@@ -227,7 +303,7 @@ We can retrieve the updated value stored in the datum with the cardano cli:
 The full utxo json representation:
 
 ```bash
-$ cardano-cli query utxo --address $(cat $CARDANO_WALLET_PATH/payment.addr) --testnet-magic $CARDANO_TESTNET_MAGIC --out-file temp.json && cat temp.json | jq '. [] | select(.inlineDatum | . != null and . != "")'
+$CARDANO_CLI query utxo --address $(cat $CARDANO_WALLET_PATH/payment.addr) $CARDANO_NETWORK_MAGIC --socket-path $CARDANO_NODE_SOCKET_PATH --out-file temp.json && cat temp.json | jq '. [] | select(.inlineDatum | . != null and . != "")'
 {
   "address": "addr_test1qzzngukkj9ydjemqjlgfn42sevy2xnvauay46weushlpuq9thd4ray00csjssf4sxftv04xeequ3xfx72nujg9y4d5ysgkxxlh",
   "datum": null,