Class LinuxJournalLogger

Namespace

VpnHood.Core.Client.Devices.Linux

Assembly

VpnHood.Core.Client.Devices.Linux.dll

Represents the console of a systemd service, whose stdout is the journal: each line starts with its level, as <3> for an error, which the journal files it under and takes off.

public sealed class LinuxJournalLogger : ILogger

Inheritance

object

LinuxJournalLogger

Implements

ILogger

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.ReferenceEquals(object, object)

object.ToString()

Remarks

The journal stamps each line, so its provider asks TextLogger for no time.

Properties

IsConsole

Gets a value indicating whether stdout is the journal's stream.

public static bool IsConsole { get; }

Property Value

bool

Remarks

systemd names that stream in JOURNAL_STREAM, as device:inode, and a process inherits the variable with an output of its own — a shell in a terminal a desktop's service started, say — so the stream itself is compared, as systemd asks: /proc names a socket socket:[inode].

Methods

BeginScope<TState>(TState)

Begins no scope: the journal's lines have none.

public IDisposable? BeginScope<TState>(TState state) where TState : notnull

Parameters

state TState

The scope's state.

Returns

IDisposable

null.

Type Parameters

TState

The type of the scope's state.

GetPriority(LogLevel)

Gets syslog's priority for a level, which the journal files an entry under.

public static int GetPriority(LogLevel logLevel)

Parameters

logLevel LogLevel

The level.

Returns

int

2 for critical, 3 for error, 4 for warning, 6 for information, and 7 for the rest.

IsEnabled(LogLevel)

Determines whether a level is written: every level is, as its provider filters.

public bool IsEnabled(LogLevel logLevel)

Parameters

logLevel LogLevel

The level.

Returns

bool

true.

Log<TState>(LogLevel, EventId, TState, Exception?, Func<TState, Exception?, string>)

Writes an entry to stdout as a line that starts with its syslog priority.

public void Log<TState>(LogLevel logLevel, EventId eventId, TState state, Exception? exception, Func<TState, Exception?, string> formatter)

Parameters

logLevel LogLevel

The entry's level.

eventId EventId

The entry's event, which the line leaves out.

state TState

The entry's state.

exception Exception

The entry's exception, or null.

formatter Func<TState, Exception, string>

The function that makes the entry's text.

Type Parameters

TState

The type of the entry's state.