65 lines
2.6 KiB
C#
65 lines
2.6 KiB
C#
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using Dapper;
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using Microsoft.Extensions.Logging;
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using Quartz;
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using SIGCM2.Infrastructure.Persistence;
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namespace SIGCM2.Infrastructure.Audit.Jobs;
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/// <summary>
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/// UDT-010 (#REQ-AUD-6) — monthly maintenance:
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/// - Extends the forward boundary of pf_AuditEvent_Monthly and pf_SecurityEvent_Monthly
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/// so the next month always has a partition ready (SPLIT RANGE).
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/// - Intended schedule: cron '0 0 2 1 * ?' (day 1 each month at 02:00 UTC).
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/// - Idempotent: only splits if the target boundary does not yet exist.
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/// </summary>
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[DisallowConcurrentExecution]
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public sealed class AuditPartitionManagerJob : IJob
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{
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public const string CronSchedule = "0 0 2 1 * ?";
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private readonly SqlConnectionFactory _factory;
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private readonly ILogger<AuditPartitionManagerJob> _logger;
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public AuditPartitionManagerJob(SqlConnectionFactory factory, ILogger<AuditPartitionManagerJob> logger)
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{
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_factory = factory;
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_logger = logger;
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}
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public async Task Execute(IJobExecutionContext context)
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{
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var ct = context.CancellationToken;
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await using var conn = _factory.CreateConnection();
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await conn.OpenAsync(ct);
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// Target: boundary for "next month + 1" (so the next month is always pre-created and we
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// keep at least one boundary ahead after the rotation).
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var now = DateTime.UtcNow;
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var target = new DateTime(now.Year, now.Month, 1, 0, 0, 0, DateTimeKind.Utc).AddMonths(2);
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var affected = 0;
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foreach (var pf in new[] { "pf_AuditEvent_Monthly", "pf_SecurityEvent_Monthly" })
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{
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var exists = await conn.ExecuteScalarAsync<int>("""
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SELECT COUNT(*)
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FROM sys.partition_functions pf
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JOIN sys.partition_range_values prv ON prv.function_id = pf.function_id
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WHERE pf.name = @Name AND CAST(prv.value AS DATETIME2(3)) = @Target;
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""", new { Name = pf, Target = target });
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if (exists == 0)
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{
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// Parameterized partition function name would require dynamic SQL; whitelisted above.
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var sql = $"ALTER PARTITION FUNCTION {pf}() SPLIT RANGE (@Target);";
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await conn.ExecuteAsync(sql, new { Target = target });
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affected++;
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_logger.LogInformation("Partition boundary {Boundary:yyyy-MM-dd} added to {Function}", target, pf);
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}
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}
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_logger.LogInformation(
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"AuditPartitionManagerJob completed — {Affected} partition function(s) extended (target: {Target:yyyy-MM-dd})",
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affected, target);
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}
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}
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