private static async Task SendDataToCwop(AprsWeatherDataPacket packet, ILogger log)
{
using (var client = new TcpClient("cwop.aprs.net", 14580))
using (var stream = client.GetStream())
{
await Send("user EW9714 pass -1 vers custom 1.00\r\n", stream, log);
await ReceiveResponse(stream, log);
await Task.Delay(TimeSpan.FromSeconds(3));
await Send(packet.ToString(), stream, log);
await Task.Delay(TimeSpan.FromSeconds(3));
}
}
public static async Task RunAsync([TimerTrigger("45 */5 * * * *")] TimerInfo myTimer, ILogger log)
{
log.LogInformation($"Loading data from ElasticSearch...");
try
{
var elasticSearchCredentials = GetEnvironmentVariable("ElasticSearchCredentials");
var httpClient = new HttpClient();
var byteArray = Encoding.ASCII.GetBytes(elasticSearchCredentials);
httpClient.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Basic", Convert.ToBase64String(byteArray));
var uri = $"http://elasticsearch.saintgimp.org/logstash-temperatures/_search";
var query = @"{
""query"": {
""match_all"": {}
},
""size"": ""1"",
""sort"": [
{
""@timestamp"": {
""order"": ""desc""
}
}
]
}";
var response = await httpClient.PostAsync(uri, new StringContent(query, Encoding.ASCII, "application/json"));
var responseContent = await response.Content.ReadAsStringAsync();
log.LogInformation(responseContent);
dynamic data = JObject.Parse(responseContent);
var mostRecentRecord = data.hits.hits[0]._source;
DateTime timestamp = mostRecentRecord["@timestamp"];
var timeSinceLastUpdate = DateTime.UtcNow - timestamp;
log.LogInformation($"Timestamp is {timestamp}, difference is {timeSinceLastUpdate}");
if (timeSinceLastUpdate > TimeSpan.FromMinutes(30))
{
throw new ApplicationException("No new data");
}
var temperature = (int)Math.Round((double)mostRecentRecord.t3 * 9.0 / 5.0 + 32.0);
log.LogInformation($"Temperature is {temperature} F");
var packet = new AprsWeatherDataPacket(
accountNumber: "EW9714",
equipmentIdentifier: "custom",
latitudeInDegrees: 47.697201f,
longitudeInDegrees: -122.063844f,
temperatureInFahrenheit: temperature);
await SendDataToCwop(packet, log);
log.LogInformation("Everything's fine here, we're all fine, how are you?");
}
catch (Exception e)
{
log.LogInformation(e.ToString());
SendTwitterNotification("Hey, I think the temperature sensor is offline!", log);
}
}
