Add missing epoch change index (#804)

* missing epoch change index for tx markers

src/RadixDlt.NetworkGateway.PostgresIntegration/CommonDbContext.cs

@@ -296,6 +296,11 @@ private static void HookupTransactions(ModelBuilder modelBuilder)
             .HasIndex(e => new { e.TransactionType, e.StateVersion })
             .HasFilter("discriminator = 'transaction_type'");
 
+        modelBuilder
+            .Entity<EpochChangeLedgerTransactionMarker>()
+            .HasIndex(e => new { e.EpochChange, e.StateVersion })
+            .HasFilter("discriminator = 'epoch_change'");
+
         modelBuilder
             .Entity<ManifestAddressLedgerTransactionMarker>()
             .HasIndex(e => new { e.OperationType, e.EntityId, e.StateVersion })

src/RadixDlt.NetworkGateway.PostgresIntegration/LedgerExtension/Processors/LedgerTransactionMarkers/EpochChangeLedgerTransactionMarkerProcessor.cs

@@ -1,4 +1,68 @@
-// <copyright file="EpochChangeLedgerTransactionMarkerProcessor.cs" company="PlaceholderCompany">
+/* Copyright 2021 Radix Publishing Ltd incorporated in Jersey (Channel Islands).
+ *
+ * Licensed under the Radix License, Version 1.0 (the "License"); you may not use this
+ * file except in compliance with the License. You may obtain a copy of the License at:
+ *
+ * radixfoundation.org/licenses/LICENSE-v1
+ *
+ * The Licensor hereby grants permission for the Canonical version of the Work to be
+ * published, distributed and used under or by reference to the Licensor’s trademark
+ * Radix ® and use of any unregistered trade names, logos or get-up.
+ *
+ * The Licensor provides the Work (and each Contributor provides its Contributions) on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied,
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+ *
+ * Whilst the Work is capable of being deployed, used and adopted (instantiated) to create
+ * a distributed ledger it is your responsibility to test and validate the code, together
+ * with all logic and performance of that code under all foreseeable scenarios.
+ *
+ * The Licensor does not make or purport to make and hereby excludes liability for all
+ * and any representation, warranty or undertaking in any form whatsoever, whether express
+ * or implied, to any entity or person, including any representation, warranty or
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+ * Work or any use of the Work complies with any law or regulation in any territory where
+ * it may be implemented or used or that it will be appropriate for any specific purpose.
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+ * out of or in connection with (without limitation of any use, misuse, of any ledger system
+ * or use made or its functionality or any performance or operation of any code or protocol
+ * caused by bugs or programming or logic errors or otherwise);
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+ * A. any offer, purchase, holding, use, sale, exchange or transmission of any
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+ */
+
+// <copyright file="EpochChangeLedgerTransactionMarkerProcessor.cs" company="PlaceholderCompany">
 // Copyright (c) PlaceholderCompany. All rights reserved.
 // </copyright>
 

src/RadixDlt.NetworkGateway.PostgresIntegration/Migrations/20241015121553_InitialCreate.cs → src/RadixDlt.NetworkGateway.PostgresIntegration/Migrations/20241016083503_InitialCreate.cs

@@ -1217,6 +1217,12 @@ protected override void Up(MigrationBuilder migrationBuilder)
                 columns: new[] { "entity_id", "state_version" },
                 filter: "discriminator = 'affected_global_entity'");
 
+            migrationBuilder.CreateIndex(
+                name: "IX_ledger_transaction_markers_epoch_change_state_version",
+                table: "ledger_transaction_markers",
+                columns: new[] { "epoch_change", "state_version" },
+                filter: "discriminator = 'epoch_change'");
+
             migrationBuilder.CreateIndex(
                 name: "IX_ledger_transaction_markers_event_type_entity_id_state_versi~",
                 table: "ledger_transaction_markers",