/// <summary>
/// Executes 'Set Device Name' command.
/// </summary>
private string SetDeviceName(SimpleHttpContext context)
{
StringBuilder json = new StringBuilder();
try
{
string name = context.Query.Get("name");
if (String.IsNullOrWhiteSpace(name))
{
throw new Exception("Parameter 'name' is missing or invalid");
}
_config.DeviceName = name;
using (SimpleJsonWriter writer = new SimpleJsonWriter(json))
{
writer.WriteStartObject();
WriteServiceObject(writer, true);
WriteDeviceObject(writer);
WriteRequestObject(writer, context);
writer.WriteStartObject("output");
writer.WritePropertyValue("success", 1);
writer.WritePropertyValue("code", 0);
writer.WriteEndObject();
writer.WriteEndObject();
}
}
catch (Exception ex)
{
_errorHandler?.LogError(ex);
return(WriteFatalResponse(context, ex));
}
return(json.ToString());
}
public string ToJson()
{
StringBuilder sb = new StringBuilder();
using (SimpleJsonWriter writer = new SimpleJsonWriter(sb, true))
{
writer.WriteStartObject();
writer.WritePropertyValue("serial", Serial);
writer.WritePropertyValue("name", Name);
writer.WritePropertyValue("version", Version);
writer.WritePropertyValue("httpPort", HttpPort);
writer.WritePropertyValue("runningSecs", (int)RunningTime.TotalSeconds);
writer.WritePropertyValue("serviceState", ServiceState);
writer.WriteStartArray("interfaces");
foreach (Interface i in Interfaces)
{
writer.WriteStartObject();
writer.WritePropertyValue("name", i.Name);
writer.WritePropertyValue("physical", i.PhysicalAddress);
writer.WritePropertyValue("internet", i.InternetAddress);
writer.WriteEndObject();
}
writer.WriteEndArray();
writer.WriteEndObject();
}
return(sb.ToString());
}
/// <summary>
/// Executes 'Read' command.
/// </summary>
private string Read(SimpleHttpContext context)
{
StringBuilder json = new StringBuilder();
try
{
string input1 = _gpio.GetBank(BankType.Input1);
string input2 = _gpio.GetBank(BankType.Input2);
string output = _gpio.GetBank(BankType.Output);
using (SimpleJsonWriter writer = new SimpleJsonWriter(json))
{
writer.WriteStartObject();
WriteServiceObject(writer, true);
WriteDeviceObject(writer);
WriteRequestObject(writer, context);
writer.WriteStartObject("output");
writer.WritePropertyValue("success", 1);
writer.WritePropertyValue("input1", input1);
writer.WritePropertyValue("input2", input2);
writer.WritePropertyValue("output", output);
writer.WriteEndObject();
writer.WriteEndObject();
}
}
catch (Exception ex)
{
_errorHandler?.LogError(ex);
return(WriteFatalResponse(context, ex));
}
return(json.ToString());
}
/// <summary>
/// Executes 'Write' command.
/// </summary>
private string Write(SimpleHttpContext context)
{
StringBuilder json = new StringBuilder();
try
{
string output = context.Query.Get("output");
if (String.IsNullOrWhiteSpace(output))
{
throw new Exception("Parameter 'output' missing or invalid");
}
_gpio.SetBank(BankType.Output, output);
using (SimpleJsonWriter writer = new SimpleJsonWriter(json))
{
writer.WriteStartObject();
WriteServiceObject(writer, true);
WriteDeviceObject(writer);
WriteRequestObject(writer, context);
writer.WriteStartObject("output");
writer.WritePropertyValue("success", 1);
writer.WriteEndObject();
writer.WriteEndObject();
}
}
catch (Exception ex)
{
_errorHandler?.LogError(ex);
return(WriteFatalResponse(context, ex));
}
return(json.ToString());
}
/// <summary>
/// Saves entries file.
/// </summary>
private static void WriteEntriesFile()
{
try
{
StringBuilder sb = new StringBuilder();
using (SimpleJsonWriter writer = new SimpleJsonWriter(sb))
{
writer.WriteStartObject();
writer.WriteStartArray("entries");
foreach (Entry entry in _entries)
{
writer.WriteStartObject();
writer.WritePropertyValue("ip", entry.IP);
writer.WritePropertyValue("host", entry.Host);
writer.WritePropertyValue("mac", entry.Mac);
writer.WriteEndObject();
}
writer.WriteEndArray();
writer.WriteEndObject();
}
Console.WriteLine($"Writing file {EntriesFile}");
File.WriteAllText(EntriesFile, sb.ToString());
}
catch (Exception ex)
{
throw new Exception($"Unable to save file {EntriesFile}", ex);
}
}
/// <summary>
/// Writes fatal error response as JSON if command execution failed completely.
/// </summary>
protected string WriteFatalResponse(SimpleHttpContext context, Exception ex)
{
StringBuilder json = new StringBuilder();
try
{
using (SimpleJsonWriter writer = new SimpleJsonWriter(json))
{
writer.WriteStartObject();
WriteServiceObject(writer);
WriteDeviceObject(writer);
WriteRequestObject(writer, context);
writer.WriteStartObject("output");
writer.WritePropertyValue("success", 0);
writer.WritePropertyValue("code", 1);
writer.WritePropertyValue("message", ex.Message ?? "A fatal error occurred");
writer.WriteEndObject();
WriteErrorsObject(writer, new List <Exception>()
{
ex
});
writer.WriteEndObject();
}
}
catch (Exception exx)
{
_errorHandler?.LogError(exx);
}
return(json.ToString());
}
/// <summary>
/// Writes runtime statistics.
/// </summary>
public void WriteRuntimeStatistics(SimpleJsonWriter writer)
{
try
{
var now = DateTime.Now;
var state = ServiceStateType.Up;
var health = ServiceHealthType.Good;
List <Alert> alerts = null;
lock (_lock)
{
state = _state;
foreach (Alert a in _alerts)
{
if (a.Type > health)
{
health = a.Type;
}
}
if (health > ServiceHealthType.Good)
{
alerts = new List <Alert>();
foreach (Alert a in _alerts)
{
alerts.Add(a);
}
}
}
writer.WriteStartObject("serviceState");
writer.WritePropertyValue("state", ((Int32)state) + "-" + state.ToString());
writer.WritePropertyValue("health", ((Int32)health) + "-" + health.ToString());
if (alerts != null)
{
writer.WriteStartArray("alerts");
foreach (Alert a in alerts)
{
writer.WriteStartObject();
writer.WritePropertyValue("type", ((Int32)a.Type) + "-" + a.Type.ToString());
writer.WritePropertyValue("message", a.Message ?? "");
writer.WritePropertyValue("time", a.Time.ToString());
writer.WritePropertyValue("expiration", a.Expiration == DateTime.MaxValue ? "max" : ((Int32)(((TimeSpan)(a.Expiration - now)).TotalMinutes)).ToString());
writer.WriteEndObject();
}
writer.WriteEndArray();
}
writer.WriteEndObject();
}
catch (Exception ex)
{
_errorHandler?.LogError(ex);
}
}
/// <summary>
/// Executes 'GetStats' command.
/// </summary>
private string GetStats(SimpleHttpContext context)
{
StringBuilder json = new StringBuilder();
try
{
using (SimpleJsonWriter writer = new SimpleJsonWriter(json))
{
writer.WriteStartObject();
WriteServiceObject(writer, true);
WriteDeviceObject(writer);
WriteRequestObject(writer, context);
foreach (IStatsWriter stats in _statsWriters)
{
stats.WriteRuntimeStatistics(writer);
}
writer.WriteEndObject();
}
}
catch (Exception ex)
{
_errorHandler?.LogError(ex);
return(WriteFatalResponse(context, ex));
}
return(json.ToString());
}
/// <summary>
/// Writes runtime statistics.
/// </summary>
public void WriteRuntimeStatistics(SimpleJsonWriter writer)
{
try
{
List <ErrorCacheItem> errorStats = GetErrorReport();
writer.WriteStartArray("errorStats");
foreach (ErrorCacheItem errorItem in errorStats)
{
writer.WriteStartObject();
writer.WritePropertyValue("count", errorItem.Count);
writer.WritePropertyValue("cpm", Math.Round(errorItem.CountPerMinute, 1));
writer.WritePropertyValue("type", errorItem.Error.Type ?? "");
writer.WritePropertyValue("message", errorItem.Error.Message ?? "");
writer.WritePropertyValue("stackTrace", errorItem.Error.StackTrace ?? "");
writer.WriteEndObject();
}
writer.WriteEndArray();
}
catch (Exception ex)
{
if (_errorHandler != null)
{
_errorHandler.LogError(ex);
}
}
}
/// <summary>
/// Writes runtime stats.
/// </summary>
public void WriteRuntimeStatistics(SimpleJsonWriter writer)
{
if (!_config.IsLinux)
{
return;
}
writer.WriteStartObject("pi");
writer.WritePropertyValue("boardModel", Pi.Info.BoardModel.ToString());
writer.WritePropertyValue("boardRevision", Pi.Info.BoardRevision);
writer.WritePropertyValue("cpuArchitecture", Pi.Info.CpuArchitecture);
writer.WritePropertyValue("cpuImplementer", Pi.Info.CpuImplementer);
writer.WritePropertyValue("cpuPart", Pi.Info.CpuPart);
writer.WritePropertyValue("cpuRevision", Pi.Info.CpuRevision);
writer.WritePropertyValue("cpuVariant", Pi.Info.CpuVariant);
writer.WritePropertyValue("features", String.Join(", ", Pi.Info.Features));
writer.WritePropertyValue("hardware", Pi.Info.Hardware);
writer.WritePropertyValue("installedRam", Pi.Info.InstalledRam);
writer.WritePropertyValue("isLittleEndian", Pi.Info.IsLittleEndian ? 1 : 0);
writer.WritePropertyValue("libraryVersion", Pi.Info.LibraryVersion?.ToString());
writer.WritePropertyValue("manufacturer", Pi.Info.Manufacturer.ToString());
writer.WritePropertyValue("memorySize", Pi.Info.MemorySize.ToString());
writer.WritePropertyValue("modelName", Pi.Info.ModelName);
writer.WritePropertyValue("operatingSystem", Pi.Info.OperatingSystem?.ToString());
writer.WritePropertyValue("processorModel", Pi.Info.ProcessorModel.ToString());
writer.WritePropertyValue("processorModel", Pi.Info.ProcessorModel.ToString());
writer.WritePropertyValue("raspberryPiVersion", Pi.Info.RaspberryPiVersion.ToString());
writer.WritePropertyValue("revision", Pi.Info.Revision);
writer.WritePropertyValue("revisionNumber", Pi.Info.RevisionNumber);
writer.WritePropertyValue("serial", Pi.Info.Serial);
writer.WritePropertyValue("uptimeSecs", Pi.Info.Uptime);
writer.WriteEndObject();
}
/// <summary>
/// Executes 'Ping' command.
/// </summary>
private string Ping(SimpleHttpContext context)
{
StringBuilder json = new StringBuilder();
try
{
using (var writer = new SimpleJsonWriter(json))
{
writer.WriteStartObject();
WriteServiceObject(writer, true);
WriteDeviceObject(writer);
_statsWriters
.Where(sw => sw is ServiceState)
.FirstOrDefault()?
.WriteRuntimeStatistics(writer);
writer.WriteEndObject();
}
}
catch (Exception ex)
{
_errorHandler?.LogError(ex);
return(WriteFatalResponse(context, ex));
}
return(json.ToString());
}
/// <summary>
/// Writes the 'device' object for all commands.
/// </summary>
public void WriteDeviceObject(SimpleJsonWriter writer)
{
writer.WriteStartObject("device");
writer.WritePropertyValue("serial", _config.DeviceSerial ?? "");
writer.WritePropertyValue("name", _config.DeviceName ?? "");
writer.WritePropertyValue("interfaceName", _config.PrimaryInterface?.Name ?? "");
writer.WritePropertyValue("macAddress", _config.PrimaryInterface?.PhysicalAddress ?? "");
writer.WritePropertyValue("ipAddress", _config.PrimaryInterface?.InternetAddress ?? "");
writer.WritePropertyValue("os", _config.GetOS());
writer.WriteEndObject();
}
public void SaveSettings()
{
StringBuilder sb = new StringBuilder();
using (SimpleJsonWriter writer = new SimpleJsonWriter(sb))
{
writer.WriteStartObject();
writer.WritePropertyValue("deviceName", DeviceName);
writer.WriteEndObject();
}
File.WriteAllText(FilePath, sb.ToString(), Encoding.UTF8);
}
/// <summary>
/// Writes the 'service' object for all commands.
/// </summary>
public void WriteServiceObject(SimpleJsonWriter writer, bool isStatistics = false)
{
writer.WriteStartObject("service");
writer.WritePropertyValue("name", _config.ServiceName);
writer.WritePropertyValue("version", _config.ServiceVersion);
if (isStatistics)
{
writer.WritePropertyValue("now", DateTime.Now.ToString());
writer.WritePropertyValue("runningTime", _config.RunningTime.ToShortString());
writer.WritePropertyValue("memoryUsageMB", _config.GetMegabytesUsedByProcess());
}
writer.WriteEndObject();
}
/// <summary>
/// Writes the 'request' object for all commands.
/// </summary>
public void WriteRequestObject(SimpleJsonWriter writer, SimpleHttpContext context)
{
IDictionary <string, string[]> qs = context.Query.GetAll();
writer.WriteStartObject("request");
writer.WritePropertyValue("handler", context.Handler);
writer.WritePropertyValue("command", context.Command);
foreach (string key in qs.Keys)
{
writer.WritePropertyValue(key, qs[key].Length > 0 ? qs[key][0] : null);
}
writer.WritePropertyValue("elapsedMS", context.Stopwatch.ElapsedMilliseconds);
writer.WriteEndObject();
}
/// <summary>
/// Writes the 'errors' object for all commands.
/// </summary>
public void WriteErrorsObject(SimpleJsonWriter writer, List <Exception> errors)
{
writer.WriteStartArray("errors");
if ((errors != null) && (errors.Count > 0))
{
for (int i = 0; i < errors.Count; i++)
{
Exception ex = errors[i];
if (!String.IsNullOrEmpty(ex.Message))
{
writer.WriteStartObject();
writer.WritePropertyValue("type", ex.GetType().ToString());
writer.WritePropertyValue("message", CleanErrorString(ex.Message));
writer.WritePropertyValue("stack", CleanErrorString(ex.StackTrace ?? ""));
writer.WriteEndObject();
}
}
}
writer.WriteEndArray();
}
/// <summary>
/// Writes runtime stats.
/// </summary>
public void WriteRuntimeStatistics(SimpleJsonWriter writer)
{
string input1, input2, output;
_lock.EnterReadLock();
try
{
input1 = BankToString(_input1);
input2 = BankToString(_input2);
output = BankToString(_outputRead);
}
finally
{
_lock.ExitReadLock();
}
writer.WriteStartObject("gpio");
writer.WritePropertyValue("input1", input1);
writer.WritePropertyValue("input2", input2);
writer.WritePropertyValue("output", output);
writer.WritePropertyValue("cps", _cps != null ? _cps.CPS.ToString("0.0") : "0.0");
writer.WriteEndObject();
}
/// <summary>
/// Writes runtime statistics.
/// </summary>
public void WriteRuntimeStatistics(SimpleJsonWriter writer)
{
try
{
GetSummary(
out List <OperationRollup> operations,
out List <OperationRollup> commands,
out List <TaskStats> runningTasks,
out List <TaskStats> completedTasks);
writer.WriteStartObject("serviceStats");
writer.WriteStartArray("operations");
foreach (OperationRollup r in operations)
{
writer.WriteStartObject();
writer.WritePropertyValue("name", r.Name ?? String.Empty);
writer.WritePropertyValue("count", r.Count);
writer.WritePropertyValue("elapsedAvg", Math.Round(r.ElapsedAvg, 1));
writer.WritePropertyValue("elapsedMin", r.ElapsedMin);
writer.WritePropertyValue("elapsedMax", r.ElapsedMax);
writer.WritePropertyValue("elapsedSum", r.ElapsedSum);
writer.WritePropertyValue("cps", Math.Round(r.CPS, 2));
writer.WriteEndObject();
}
writer.WriteEndArray();
writer.WriteStartArray("commands");
foreach (OperationRollup r in commands)
{
writer.WriteStartObject();
writer.WritePropertyValue("name", r.Name ?? String.Empty);
writer.WritePropertyValue("count", r.Count);
writer.WritePropertyValue("elapsedAvg", Math.Round(r.ElapsedAvg, 1));
writer.WritePropertyValue("elapsedMin", r.ElapsedMin);
writer.WritePropertyValue("elapsedMax", r.ElapsedMax);
writer.WritePropertyValue("elapsedSum", r.ElapsedSum);
writer.WritePropertyValue("cps", Math.Round(r.CPS, 2));
writer.WriteEndObject();
}
writer.WriteEndArray();
writer.WriteStartArray("completedTasks");
foreach (TaskStats t in completedTasks)
{
writer.WriteStartObject();
writer.WritePropertyValue("name", t.Name ?? String.Empty);
writer.WritePropertyValue("ips", Math.Round(t.IterationsPerSecond, 1));
writer.WritePropertyValue("elapsed", t.Elapsed.ToShortString());
writer.WriteEndObject();
}
writer.WriteEndArray();
writer.WriteStartArray("runningTasks");
foreach (TaskStats t in runningTasks)
{
writer.WriteStartObject();
writer.WritePropertyValue("name", t.Name ?? String.Empty);
writer.WritePropertyValue("ips", Math.Round(t.IterationsPerSecond, 1));
writer.WritePropertyValue("percentComplete", Math.Round(t.PercentComplete, 1));
writer.WritePropertyValue("eta", t.ETA.ToShortString());
writer.WritePropertyValue("elapsed", t.Elapsed.ToShortString());
writer.WriteEndObject();
}
writer.WriteEndArray();
writer.WriteEndObject();
}
catch (Exception ex)
{
if (_errorHandler != null)
{
_errorHandler.LogError(ex);
}
}
}