39 lines
1.4 KiB
C#
39 lines
1.4 KiB
C#
using Microsoft.Extensions.Caching.Memory;
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namespace MesaFabApproval.API.Services;
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public interface ICustomerService {
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Task<IEnumerable<string>> GetCustomerNames();
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}
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public class CustomerService : ICustomerService {
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private readonly ILogger<CustomerService> _logger;
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private readonly IDalService _dalService;
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private readonly IMemoryCache _cache;
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public CustomerService(ILogger<CustomerService> logger, IDalService dalService, IMemoryCache cache) {
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_logger = logger ?? throw new ArgumentNullException("ILogger not injected");
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_dalService = dalService ?? throw new ArgumentNullException("IDalService not injected");
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_cache = cache ?? throw new ArgumentNullException("IMemoryCache not injected");
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}
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public async Task<IEnumerable<string>> GetCustomerNames() {
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try {
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_logger.LogInformation("Attempting to get customer names");
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IEnumerable<string>? customerNames = _cache.Get<IEnumerable<string>>("allCustomerNames");
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if (customerNames is null) {
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string sql = "select ProductFamily from ProductFamilies;";
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customerNames = (await _dalService.QueryAsync<string>(sql)).ToList();
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}
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return customerNames;
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} catch (Exception ex) {
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_logger.LogError($"Unable to get customer names, because {ex.Message}");
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throw;
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}
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}
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}
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