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using System;
using Microsoft.Extensions.Logging;
using Npgsql.BackendMessages;
using Npgsql.Internal;
namespace Npgsql;
/// <summary>
/// PostgreSQL notices are non-critical messages generated by PostgreSQL, either as a result of a user query
/// (e.g. as a warning or informational notice), or due to outside activity (e.g. if the database administrator
/// initiates a "fast" database shutdown).
/// </summary>
/// <remarks>
/// https://www.postgresql.org/docs/current/static/protocol-flow.html#PROTOCOL-ASYNC
/// </remarks>
public sealed class PostgresNotice
{
#region Message Fields
/// <summary>
/// Severity of the error or notice.
/// Always present.
/// </summary>
public string Severity { get; set; }
/// <summary>
/// Severity of the error or notice, not localized.
/// Always present since PostgreSQL 9.6.
/// </summary>
public string InvariantSeverity { get; }
/// <summary>
/// The SQLSTATE code for the error.
/// </summary>
/// <remarks>
/// Always present.
/// See https://www.postgresql.org/docs/current/static/errcodes-appendix.html
/// </remarks>
public string SqlState { get; set; }
/// <summary>
/// The primary human-readable error message. This should be accurate but terse.
/// </summary>
/// <remarks>
/// Always present.
/// </remarks>
public string MessageText { get; set; }
/// <summary>
/// An optional secondary error message carrying more detail about the problem.
/// May run to multiple lines.
/// </summary>
public string? Detail { get; set; }
/// <summary>
/// An optional suggestion what to do about the problem.
/// This is intended to differ from Detail in that it offers advice (potentially inappropriate) rather than hard facts.
/// May run to multiple lines.
/// </summary>
public string? Hint { get; set; }
/// <summary>
/// The field value is a decimal ASCII integer, indicating an error cursor position as an index into the original query string.
/// The first character has index 1, and positions are measured in characters not bytes.
/// 0 means not provided.
/// </summary>
public int Position { get; set; }
/// <summary>
/// This is defined the same as the <see cref="Position"/> field, but it is used when the cursor position refers to an internally generated command rather than the one submitted by the client.
/// The <see cref="InternalQuery" /> field will always appear when this field appears.
/// 0 means not provided.
/// </summary>
public int InternalPosition { get; set; }
/// <summary>
/// The text of a failed internally-generated command.
/// This could be, for example, a SQL query issued by a PL/pgSQL function.
/// </summary>
public string? InternalQuery { get; set; }
/// <summary>
/// An indication of the context in which the error occurred.
/// Presently this includes a call stack traceback of active PL functions.
/// The trace is one entry per line, most recent first.
/// </summary>
public string? Where { get; set; }
/// <summary>
/// If the error was associated with a specific database object, the name of the schema containing that object, if any.
/// </summary>
/// <remarks>PostgreSQL 9.3 and up.</remarks>
public string? SchemaName { get; set; }
/// <summary>
/// Table name: if the error was associated with a specific table, the name of the table.
/// (Refer to the schema name field for the name of the table's schema.)
/// </summary>
/// <remarks>PostgreSQL 9.3 and up.</remarks>
public string? TableName { get; set; }
/// <summary>
/// If the error was associated with a specific table column, the name of the column.
/// (Refer to the schema and table name fields to identify the table.)
/// </summary>
/// <remarks>PostgreSQL 9.3 and up.</remarks>
public string? ColumnName { get; set; }
/// <summary>
/// If the error was associated with a specific data type, the name of the data type.
/// (Refer to the schema name field for the name of the data type's schema.)
/// </summary>
/// <remarks>PostgreSQL 9.3 and up.</remarks>
public string? DataTypeName { get; set; }
/// <summary>
/// If the error was associated with a specific constraint, the name of the constraint.
/// Refer to fields listed above for the associated table or domain.
/// (For this purpose, indexes are treated as constraints, even if they weren't created with constraint syntax.)
/// </summary>
/// <remarks>PostgreSQL 9.3 and up.</remarks>
public string? ConstraintName { get; set; }
/// <summary>
/// The file name of the source-code location where the error was reported.
/// </summary>
/// <remarks>PostgreSQL 9.3 and up.</remarks>
public string? File { get; set; }
/// <summary>
/// The line number of the source-code location where the error was reported.
/// </summary>
public string? Line { get; set; }
/// <summary>
/// The name of the source-code routine reporting the error.
/// </summary>
public string? Routine { get; set; }
#endregion
/// <summary>
/// Creates a new instance.
/// </summary>
public PostgresNotice(string severity, string invariantSeverity, string sqlState, string messageText)
: this(messageText, severity, invariantSeverity, sqlState, detail: null) {}
/// <summary>
/// Creates a new instance.
/// </summary>
public PostgresNotice(
string messageText, string severity, string invariantSeverity, string sqlState,
string? detail = null, string? hint = null, int position = 0, int internalPosition = 0,
string? internalQuery = null, string? where = null, string? schemaName = null, string? tableName = null,
string? columnName = null, string? dataTypeName = null, string? constraintName = null, string? file = null,
string? line = null, string? routine = null)
{
MessageText = messageText;
Severity = severity;
InvariantSeverity = invariantSeverity;
SqlState = sqlState;
Detail = detail;
Hint = hint;
Position = position;
InternalPosition = internalPosition;
InternalQuery = internalQuery;
Where = where;
SchemaName = schemaName;
TableName = tableName;
ColumnName = columnName;
DataTypeName = dataTypeName;
ConstraintName = constraintName;
File = file;
Line = line;
Routine = routine;
}
PostgresNotice(ErrorOrNoticeMessage msg)
: this(
msg.Message, msg.Severity, msg.InvariantSeverity, msg.SqlState,
msg.Detail, msg.Hint, msg.Position, msg.InternalPosition, msg.InternalQuery,
msg.Where, msg.SchemaName, msg.TableName, msg.ColumnName, msg.DataTypeName,
msg.ConstraintName, msg.File, msg.Line, msg.Routine) {}
internal static PostgresNotice Load(NpgsqlReadBuffer buf, bool includeDetail, ILogger exceptionLogger)
=> new(ErrorOrNoticeMessage.Load(buf, includeDetail, exceptionLogger));
}
/// <summary>
/// Provides data for a PostgreSQL notice event.
/// </summary>
public sealed class NpgsqlNoticeEventArgs : EventArgs
{
/// <summary>
/// The Notice that was sent from the database.
/// </summary>
public PostgresNotice Notice { get; }
internal NpgsqlNoticeEventArgs(PostgresNotice notice)
=> Notice = notice;
}