PCRB follow up endpoints

MesaFabApproval.API/Services/DalService.cs

@@ -1,4 +1,5 @@
 using System.Data;
+using System.Text;
 
 using Dapper;
 
@@ -6,7 +7,9 @@ namespace MesaFabApproval.API.Services;
 
 public interface IDalService {
     Task<IEnumerable<T>> QueryAsync<T>(string sql);
+    Task<IEnumerable<T>> QueryAsync<T>(string sql, object paramaters);
     Task<int> ExecuteAsync(string sql);
+    Task<int> ExecuteAsync<T>(string sql, T paramaters);
 }
 
 public class DalService : IDalService {
@@ -55,6 +58,45 @@ public class DalService : IDalService {
         return result;
     }
 
+    public async Task<IEnumerable<T>> QueryAsync<T>(string sql, object parameters) {
+        if (sql is null) throw new ArgumentNullException("sql cannot be null");
+        if (parameters is null) throw new ArgumentNullException("parameters cannot be null");
+
+        StringBuilder logBuilder = new();
+
+        int remainingRetries = RETRIES;
+        bool queryWasSuccessful = false;
+        Exception exception = null;
+        IEnumerable<T> result = new List<T>();
+        while (!queryWasSuccessful && remainingRetries > 0) {
+            int backoffSeconds = (RETRIES - remainingRetries--) * BACKOFF_SECONDS_INTERVAL;
+            Task.Delay(backoffSeconds * 1000).Wait();
+
+            try {
+                logBuilder.Clear();
+                logBuilder.Append($"Attempting to perform query with {sql} ");
+                logBuilder.Append($"and parameters {parameters.ToString()}. ");
+                logBuilder.Append($"Remaining retries: {remainingRetries}");
+                _logger.LogInformation(logBuilder.ToString());
+
+                using (IDbConnection conn = _dbConnectionService.GetConnection()) {
+                    result = await conn.QueryAsync<T>(sql, parameters);
+                }
+
+                queryWasSuccessful = true;
+            } catch (Exception ex) {
+                _logger.LogError($"An exception occurred while attempting to perform a query. Exception: {ex.Message}");
+                exception = ex;
+            }
+        }
+
+        if (!queryWasSuccessful && exception is not null) {
+            throw exception;
+        }
+
+        return result;
+    }
+
     public async Task<int> ExecuteAsync(string sql) {
         if (sql is null) throw new ArgumentNullException("sql cannot be null");
 
@@ -86,4 +128,36 @@ public class DalService : IDalService {
 
         return rowsAffected;
     }
+
+    public async Task<int> ExecuteAsync<T>(string sql, T parameters) {
+        if (sql is null) throw new ArgumentNullException("sql cannot be null");
+
+        int remainingRetries = RETRIES;
+        bool queryWasSuccessful = false;
+        Exception exception = null;
+        int rowsAffected = 0;
+        while (!queryWasSuccessful && remainingRetries > 0) {
+            int backoffSeconds = (RETRIES - remainingRetries--) * BACKOFF_SECONDS_INTERVAL;
+            Task.Delay(backoffSeconds * 1000).Wait();
+
+            try {
+                _logger.LogInformation($"Attempting to execute {sql} with parameters. Remaining retries: {remainingRetries}");
+
+                using (IDbConnection conn = _dbConnectionService.GetConnection()) {
+                    rowsAffected = await conn.ExecuteAsync(sql, parameters);
+                }
+
+                queryWasSuccessful = true;
+            } catch (Exception ex) {
+                _logger.LogError($"An exception occurred while attempting to execute a query. Exception: {ex.Message}");
+                exception = ex;
+            }
+        }
+
+        if (!queryWasSuccessful && exception is not null) {
+            throw exception;
+        }
+
+        return rowsAffected;
+    }
 }