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using Azure.Core;
using Azure.Identity;
using Kusto.Data;
using Kusto.Data.Common;
using Kusto.Data.Net.Client;
using Microsoft.Extensions.Options;
using System.Data;
namespace ChatADX.Web.Services
{
public sealed class KustoQueryService
{
private readonly ICslQueryProvider _query;
private readonly string _database;
public KustoQueryService(IOptions<AdxOptions> opts)
{
var options = opts.Value;
_database = options.Database;
// Use DefaultAzureCredential: works locally (Azure CLI / Visual Studio), and in Azure (Managed Identity)
var cred = new ClientSecretCredential(
opts.Value.TenantId,
opts.Value.ClientId,
opts.Value.ClientSecret);
var kcsb = new KustoConnectionStringBuilder(options.ClusterUri)
.WithAadAzureTokenCredentialsAuthentication(cred);
_query = KustoClientFactory.CreateCslQueryProvider(kcsb);
}
public async Task<DataTable> QueryAsync(string kql, IDictionary<string, string> parameters, CancellationToken ct = default)
{
var props = new ClientRequestProperties
{
ClientRequestId = $"chat_{Guid.NewGuid()}"
};
foreach (var kvp in parameters)
{
// Pass all as strings; let KQL cast via e.g., datetime({from}) if declared
props.SetParameter(kvp.Key, kvp.Value);
}
props.SetOption("servertimeout", "00:00:12");
using var reader = await _query.ExecuteQueryAsync(_database, kql, props);
var table = new DataTable();
table.Load(reader);
return table;
}
}
}
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