public TelemetryPublisherFirestore(TelemetryPublisherBuilderOptions opts) : base(opts)
{
var options = ConnectionStringParser.Parse(opts.ConnectionString);
if (!options.TryGetValue("ProjectId", out var firestoreProjectId))
{
Logger?.LogCritical(
$"Can't start {nameof(TelemetryPublisherFirestore)}! Malformed connection string! " +
$"Missing ProjectId!");
}
if (!options.TryGetValue("CollectionName", out var firestoreCollection))
{
Logger?.LogCritical(
$"Can't start {nameof(TelemetryPublisherFirestore)}! Malformed connection string! " +
$"Missing CollectionName!");
}
_timeout = int.Parse(options.GetValueOrDefault("Timeout", "10000"));
var requestUrl = $"https://firestore.googleapis.com/v1/projects/{firestoreProjectId}/" +
$"databases/(default)/documents/{firestoreCollection}/";
_httpClient = new HttpClient();
_httpClient.BaseAddress = new Uri(requestUrl);
Logger?.LogInformation($"Initialized {nameof(TelemetryPublisherFirestore)}");
}
/// <summary>
/// Constructor for <see cref="TelemetryPublisher"/>.
/// </summary>
/// <param name="opts">TelemetryPublisher options, see: <see cref="TelemetryPublisherBuilderOptions"/></param>
protected TelemetryPublisher(TelemetryPublisherBuilderOptions opts)
{
ConnectionString = opts.ConnectionString;
TelemetrySource = opts.TelemetrySource;
Logger = opts.Logger;
RegisteredTelemeters = new List <ITelemeter>(5);
}
private static TelemetryPublisher SpawnPublisher(string type, TelemetryPublisherBuilderOptions opts)
{
return(type switch
{
TelemetryPublisherType.Azure => (TelemetryPublisher) new TelemetryPublisherAzure(opts),
TelemetryPublisherType.Disk => new TelemetryPublisherDisk(opts),
TelemetryPublisherType.Firestore => new TelemetryPublisherFirestore(opts),
_ => throw new ArgumentException($"Invalid TelemetryPublisher type: {type}.")
});
/// <summary>
/// Creates an instance of <see cref="TelemetryPublisher"/>.
/// </summary>
/// <param name="type">The type of the publisher. See <see cref="TelemetryPublisherType"/> </param>
/// <param name="connectionString">The device connection string for the selected publisher.</param>
/// <returns>A <see cref="TelemetryPublisher"/> instance.</returns>
public static TelemetryPublisher CreateFromConnectionString(string type, string connectionString)
{
Guard.ArgumentNotNullOrWhiteSpace(nameof(connectionString), connectionString);
var opts = new TelemetryPublisherBuilderOptions()
{
ConnectionString = connectionString, TelemetrySource = "TelemetryPublisherAzure"
};
return(SpawnPublisher(type, opts));
}
/// <summary>
/// Creates an instance of <see cref="TelemetryPublisher"/>. See <see cref="TelemetryPublisherType"/>
/// </summary>
/// <param name="type">The type of the publisher. <see cref="TelemetryPublisherType"/> </param>
/// <param name="connectionString">Device connection string for Microsoft Azure IoT hub device.</param>
/// <param name="telemetrySource">String that is used to identify the source of the telemetry data.</param>
/// <param name="logger">An <see cref="ILogger"/> logger instance. </param>
/// <returns>A <see cref="TelemetryPublisher"/> instance.</returns>
public static TelemetryPublisher Create(string type, string connectionString,
string telemetrySource, ILogger logger)
{
Guard.ArgumentNotNullOrWhiteSpace(nameof(connectionString), connectionString);
Guard.ArgumentNotNullOrWhiteSpace(nameof(telemetrySource), telemetrySource);
Guard.ArgumentNotNull(nameof(logger), logger);
var opts = new TelemetryPublisherBuilderOptions()
{
ConnectionString = connectionString, TelemetrySource = telemetrySource, Logger = logger
};
return(SpawnPublisher(type, opts));
}
/// <summary>
/// Constructs an instance of <see cref="TelemetryPublisherDisk"/>.
/// <remarks>
/// The connection string must contain the following options:
/// Filename (optional) - The path of the filename in which to log telemetry data.
/// FileExtension (optional) - The extension of the filename. Default csv
/// Separator (optional) - The separator of the messages. Default ,
/// BufferSize (optional) - The buffer size for the async writer. Default: 4096
/// </remarks>
/// </summary>
/// <param name="opts"></param>
public TelemetryPublisherDisk(TelemetryPublisherBuilderOptions opts) : base(opts)
{
var connectionStringParams = ConnectionStringParser.Parse(opts.ConnectionString);
var fileName = connectionStringParams.GetValueOrDefault("FileName", "telemetry");
var fileExtension = connectionStringParams.GetValueOrDefault("FileExtension", "csv");
var bufferSize = connectionStringParams.GetValueOrDefault("BufferSize", "4096");
_separator = connectionStringParams.GetValueOrDefault("Separator", ",");
_fileStream = new FileStream(NormalizeFilename(fileName, fileExtension), FileMode.Append, FileAccess.Write,
FileShare.Read, int.Parse(bufferSize), true);
Logger?.LogDebug("Initialized the TelemetryPublisherDisk!");
}
public TelemetryPublisherAzure(TelemetryPublisherBuilderOptions opts) : base(opts)
{
try
{
DeviceClient = DeviceClient.CreateFromConnectionString(ConnectionString, TransportType.Mqtt);
}
catch (FormatException)
{
Logger?.LogCritical("Can't start telemetry service! Malformed connection string!");
throw;
}
Logger?.LogDebug("Initialized the AzureTelemetryPublisher!");
}
