From 7c6009abd22d8461039be15d0fd069a460340585 Mon Sep 17 00:00:00 2001 From: Jake Mannens Date: Fri, 20 Sep 2024 16:13:30 +1000 Subject: v0.1 --- .editorconfig | 4 + .gitattributes | 63 +++ .gitignore | 366 ++++++++++++++ CHANGELOG.md | 3 + LICENSE.txt | 674 ++++++++++++++++++++++++++ Migrations/20230705160931_Initial.Designer.cs | 159 ++++++ Migrations/20230705160931_Initial.cs | 115 +++++ Migrations/PagerContextModelSnapshot.cs | 156 ++++++ PagerContext.cs | 17 + PagerFetchService.cs | 62 +++ PagerMessage.cs | 124 +++++ PagerParser.csproj | 22 + PositionCalculator.cs | 100 ++++ Program.cs | 71 +++ Properties/launchSettings.json | 11 + README.md | 35 ++ Sites/PagerMon.cs | 36 ++ appsettings.json | 9 + 18 files changed, 2027 insertions(+) create mode 100644 .editorconfig create mode 100644 .gitattributes create mode 100644 .gitignore create mode 100644 CHANGELOG.md create mode 100644 LICENSE.txt create mode 100644 Migrations/20230705160931_Initial.Designer.cs create mode 100644 Migrations/20230705160931_Initial.cs create mode 100644 Migrations/PagerContextModelSnapshot.cs create mode 100644 PagerContext.cs create mode 100644 PagerFetchService.cs create mode 100644 PagerMessage.cs create mode 100644 PagerParser.csproj create mode 100644 PositionCalculator.cs create mode 100644 Program.cs create mode 100644 Properties/launchSettings.json create mode 100644 README.md create mode 100644 Sites/PagerMon.cs create mode 100644 appsettings.json diff --git a/.editorconfig b/.editorconfig new file mode 100644 index 0000000..6d8f727 --- /dev/null +++ b/.editorconfig @@ -0,0 +1,4 @@ +[*.cs] + +# CS8618: Non-nullable field must contain a non-null value when exiting constructor. Consider declaring as nullable. +dotnet_diagnostic.CS8618.severity = silent diff --git a/.gitattributes b/.gitattributes new file mode 100644 index 0000000..1ff0c42 --- /dev/null +++ b/.gitattributes @@ -0,0 +1,63 @@ +############################################################################### +# Set default behavior to automatically normalize line endings. +############################################################################### +* text=auto + +############################################################################### +# Set default behavior for command prompt diff. +# +# This is need for earlier builds of msysgit that does not have it on by +# default for csharp files. +# Note: This is only used by command line +############################################################################### +#*.cs diff=csharp + +############################################################################### +# Set the merge driver for project and solution files +# +# Merging from the command prompt will add diff markers to the files if there +# are conflicts (Merging from VS is not affected by the settings below, in VS +# the diff markers are never inserted). Diff markers may cause the following +# file extensions to fail to load in VS. An alternative would be to treat +# these files as binary and thus will always conflict and require user +# intervention with every merge. To do so, just uncomment the entries below +############################################################################### +#*.sln merge=binary +#*.csproj merge=binary +#*.vbproj merge=binary +#*.vcxproj merge=binary +#*.vcproj merge=binary +#*.dbproj merge=binary +#*.fsproj merge=binary +#*.lsproj merge=binary +#*.wixproj merge=binary +#*.modelproj merge=binary +#*.sqlproj merge=binary +#*.wwaproj merge=binary + +############################################################################### +# behavior for image files +# +# image files are treated as binary by default. +############################################################################### +#*.jpg binary +#*.png binary +#*.gif binary + +############################################################################### +# diff behavior for common document formats +# +# Convert binary document formats to text before diffing them. This feature +# is only available from the command line. Turn it on by uncommenting the +# entries below. +############################################################################### +#*.doc diff=astextplain +#*.DOC diff=astextplain +#*.docx diff=astextplain +#*.DOCX diff=astextplain +#*.dot diff=astextplain +#*.DOT diff=astextplain +#*.pdf diff=astextplain +#*.PDF diff=astextplain +#*.rtf diff=astextplain +#*.RTF diff=astextplain diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..f4f0633 --- /dev/null +++ b/.gitignore @@ -0,0 +1,366 @@ +## Ignore Visual Studio temporary files, build results, and +## files generated by popular Visual Studio add-ons. +## +## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore + +# User-specific files +*.rsuser +*.suo +*.user +*.userosscache +*.sln.docstates + +# User-specific files (MonoDevelop/Xamarin Studio) +*.userprefs + +# Mono auto generated files +mono_crash.* + +# Build results +[Dd]ebug/ +[Dd]ebugPublic/ +[Rr]elease/ +[Rr]eleases/ +x64/ +x86/ +[Ww][Ii][Nn]32/ +[Aa][Rr][Mm]/ +[Aa][Rr][Mm]64/ +bld/ +[Bb]in/ +[Oo]bj/ +[Oo]ut/ +[Ll]og/ +[Ll]ogs/ + +# Visual Studio 2015/2017 cache/options directory +.vs/ +# Uncomment if you have tasks that create the project's static files in wwwroot +#wwwroot/ + +# Visual Studio 2017 auto generated files +Generated\ Files/ + +# MSTest test Results +[Tt]est[Rr]esult*/ +[Bb]uild[Ll]og.* + +# NUnit +*.VisualState.xml +TestResult.xml +nunit-*.xml + +# Build Results of an ATL Project +[Dd]ebugPS/ +[Rr]eleasePS/ +dlldata.c + +# Benchmark Results +BenchmarkDotNet.Artifacts/ + +# .NET Core +project.lock.json +project.fragment.lock.json +artifacts/ + +# ASP.NET Scaffolding +ScaffoldingReadMe.txt + +# StyleCop +StyleCopReport.xml + +# Files built by Visual Studio +*_i.c +*_p.c +*_h.h +*.ilk +*.meta +*.obj +*.iobj +*.pch +*.pdb +*.ipdb +*.pgc +*.pgd +*.rsp +*.sbr +*.tlb +*.tli +*.tlh +*.tmp +*.tmp_proj +*_wpftmp.csproj +*.log +*.vspscc +*.vssscc +.builds +*.pidb +*.svclog +*.scc + +# Chutzpah Test files +_Chutzpah* + +# Visual C++ cache files +ipch/ +*.aps +*.ncb +*.opendb +*.opensdf +*.sdf +*.cachefile +*.VC.db +*.VC.VC.opendb + +# Visual Studio profiler +*.psess +*.vsp +*.vspx +*.sap + +# Visual Studio Trace Files +*.e2e + +# TFS 2012 Local Workspace +$tf/ + +# Guidance Automation Toolkit +*.gpState + +# ReSharper is a .NET coding add-in +_ReSharper*/ +*.[Rr]e[Ss]harper +*.DotSettings.user + +# TeamCity is a build add-in +_TeamCity* + +# DotCover is a Code Coverage Tool +*.dotCover + +# AxoCover is a Code Coverage Tool +.axoCover/* +!.axoCover/settings.json + +# Coverlet is a free, cross platform Code Coverage Tool +coverage*.json +coverage*.xml +coverage*.info + +# Visual Studio code coverage results +*.coverage +*.coveragexml + +# NCrunch +_NCrunch_* +.*crunch*.local.xml +nCrunchTemp_* + +# MightyMoose +*.mm.* +AutoTest.Net/ + +# Web workbench (sass) +.sass-cache/ + +# Installshield output folder +[Ee]xpress/ + +# DocProject is a documentation generator add-in +DocProject/buildhelp/ +DocProject/Help/*.HxT +DocProject/Help/*.HxC +DocProject/Help/*.hhc +DocProject/Help/*.hhk +DocProject/Help/*.hhp +DocProject/Help/Html2 +DocProject/Help/html + +# Click-Once directory +publish/ + +# Publish Web Output +*.[Pp]ublish.xml +*.azurePubxml +# Note: Comment the next line if you want to checkin your web deploy settings, +# but database connection strings (with potential passwords) will be unencrypted +*.pubxml +*.publishproj + +# Microsoft Azure Web App publish settings. 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/Migrations/20230705160931_Initial.Designer.cs b/Migrations/20230705160931_Initial.Designer.cs new file mode 100644 index 0000000..598258f --- /dev/null +++ b/Migrations/20230705160931_Initial.Designer.cs @@ -0,0 +1,159 @@ +// +using System; +using Microsoft.EntityFrameworkCore; +using Microsoft.EntityFrameworkCore.Infrastructure; +using Microsoft.EntityFrameworkCore.Migrations; +using Microsoft.EntityFrameworkCore.Storage.ValueConversion; +using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata; +using PagerParser; + +#nullable disable + +namespace PagerParser.Migrations +{ + [DbContext(typeof(PagerContext))] + [Migration("20230705160931_Initial")] + partial class Initial + { + /// + protected override void BuildTargetModel(ModelBuilder modelBuilder) + { +#pragma warning disable 612, 618 + modelBuilder + .HasAnnotation("ProductVersion", "7.0.8") + .HasAnnotation("Relational:MaxIdentifierLength", 63); + + NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder); + + modelBuilder.Entity("PagerParser.GpsPosition", b => + { + b.Property("GpsPositionId") + .ValueGeneratedOnAdd() + .HasColumnType("integer"); + + NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property("GpsPositionId")); + + b.Property("Latitude") + .HasColumnType("double precision"); + + b.Property("Longitude") + .HasColumnType("double precision"); + + b.HasKey("GpsPositionId"); + + b.ToTable("GpsPositions"); + }); + + modelBuilder.Entity("PagerParser.PagerMessage", b => + { + b.Property("PagerMessageId") + .ValueGeneratedOnAdd() + .HasColumnType("integer"); + + NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property("PagerMessageId")); + + b.Property("Message") + .IsRequired() + .HasColumnType("text"); + + b.Property("Timestamp") + .HasColumnType("timestamp with time zone"); + + b.HasKey("PagerMessageId"); + + b.HasIndex("Message"); + + b.ToTable("PagerMessages"); + }); + + modelBuilder.Entity("PagerParser.ParsedPagerMessage", b => + { + b.Property("ParsedPagerMessageId") + .ValueGeneratedOnAdd() + .HasColumnType("integer"); + + NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property("ParsedPagerMessageId")); + + b.Property("AlertLevel") + .HasColumnType("integer"); + + b.Property("AssignmentArea") + .IsRequired() + .HasColumnType("text"); + + b.Property("AttendingServices") + .HasColumnType("integer"); + + b.Property("Description") + .IsRequired() + .HasColumnType("text"); + + b.Property("FireGroundChannel") + .HasColumnType("integer"); + + b.Property("FirecomJobNo") + .HasColumnType("integer"); + + b.Property("GpsPositionId") + .HasColumnType("integer"); + + b.Property("GridReference") + .HasColumnType("integer"); + + b.Property("JobType") + .IsRequired() + .HasColumnType("text"); + + b.Property("MelwaysGrid") + .HasColumnType("text"); + + b.Property("MelwaysMapNo") + .HasColumnType("integer"); + + b.Property("Note") + .HasColumnType("text"); + + b.Property("PageDestination") + .IsRequired() + .HasColumnType("text"); + + b.Property("PagerMessage") + .HasColumnType("integer"); + + b.HasKey("ParsedPagerMessageId"); + + b.HasIndex("FirecomJobNo"); + + b.HasIndex("GpsPositionId"); + + b.HasIndex("PagerMessage") + .IsUnique(); + + b.ToTable("ParsedPagerMessages"); + }); + + modelBuilder.Entity("PagerParser.ParsedPagerMessage", b => + { + b.HasOne("PagerParser.GpsPosition", "GpsPosition") + .WithMany() + .HasForeignKey("GpsPositionId"); + + b.HasOne("PagerParser.PagerMessage", "OriginalMessage") + .WithOne("ParsedMessage") + .HasForeignKey("PagerParser.ParsedPagerMessage", "PagerMessage") + .OnDelete(DeleteBehavior.Cascade) + .IsRequired(); + + b.Navigation("GpsPosition"); + + b.Navigation("OriginalMessage"); + }); + + modelBuilder.Entity("PagerParser.PagerMessage", b => + { + b.Navigation("ParsedMessage"); + }); +#pragma warning restore 612, 618 + } + } +} diff --git a/Migrations/20230705160931_Initial.cs b/Migrations/20230705160931_Initial.cs new file mode 100644 index 0000000..9f3068f --- /dev/null +++ b/Migrations/20230705160931_Initial.cs @@ -0,0 +1,115 @@ +using System; +using Microsoft.EntityFrameworkCore.Migrations; +using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata; + +#nullable disable + +namespace PagerParser.Migrations +{ + /// + public partial class Initial : Migration + { + /// + protected override void Up(MigrationBuilder migrationBuilder) + { + migrationBuilder.CreateTable( + name: "GpsPositions", + columns: table => new + { + GpsPositionId = table.Column(type: "integer", nullable: false) + .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn), + Latitude = table.Column(type: "double precision", nullable: false), + Longitude = table.Column(type: "double precision", nullable: false) + }, + constraints: table => + { + table.PrimaryKey("PK_GpsPositions", x => x.GpsPositionId); + }); + + migrationBuilder.CreateTable( + name: "PagerMessages", + columns: table => new + { + PagerMessageId = table.Column(type: "integer", nullable: false) + .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn), + Timestamp = table.Column(type: "timestamp with time zone", nullable: false), + Message = table.Column(type: "text", nullable: false) + }, + constraints: table => + { + table.PrimaryKey("PK_PagerMessages", x => x.PagerMessageId); + }); + + migrationBuilder.CreateTable( + name: "ParsedPagerMessages", + columns: table => new + { + ParsedPagerMessageId = table.Column(type: "integer", nullable: false) + .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn), + FirecomJobNo = table.Column(type: "integer", nullable: false), + AssignmentArea = table.Column(type: "text", nullable: false), + JobType = table.Column(type: "text", nullable: false), + AlertLevel = table.Column(type: "integer", nullable: false), + Description = table.Column(type: "text", nullable: false), + MelwaysMapNo = table.Column(type: "integer", nullable: true), + MelwaysGrid = table.Column(type: "text", nullable: true), + GridReference = table.Column(type: "integer", nullable: true), + AttendingServices = table.Column(type: "integer", nullable: false), + Note = table.Column(type: "text", nullable: true), + FireGroundChannel = table.Column(type: "integer", nullable: true), + PageDestination = table.Column(type: "text", nullable: false), + GpsPositionId = table.Column(type: "integer", nullable: true), + PagerMessage = table.Column(type: "integer", nullable: false) + }, + constraints: table => + { + table.PrimaryKey("PK_ParsedPagerMessages", x => x.ParsedPagerMessageId); + table.ForeignKey( + name: "FK_ParsedPagerMessages_GpsPositions_GpsPositionId", + column: x => x.GpsPositionId, + principalTable: "GpsPositions", + principalColumn: "GpsPositionId"); + table.ForeignKey( + name: "FK_ParsedPagerMessages_PagerMessages_PagerMessage", + column: x => x.PagerMessage, + principalTable: "PagerMessages", + principalColumn: "PagerMessageId", + onDelete: ReferentialAction.Cascade); + }); + + migrationBuilder.CreateIndex( + name: "IX_PagerMessages_Message", + table: "PagerMessages", + column: "Message"); + + migrationBuilder.CreateIndex( + name: "IX_ParsedPagerMessages_FirecomJobNo", + table: "ParsedPagerMessages", + column: "FirecomJobNo"); + + migrationBuilder.CreateIndex( + name: "IX_ParsedPagerMessages_GpsPositionId", + table: "ParsedPagerMessages", + column: "GpsPositionId"); + + migrationBuilder.CreateIndex( + name: "IX_ParsedPagerMessages_PagerMessage", + table: "ParsedPagerMessages", + column: "PagerMessage", + unique: true); + } + + /// + protected override void Down(MigrationBuilder migrationBuilder) + { + migrationBuilder.DropTable( + name: "ParsedPagerMessages"); + + migrationBuilder.DropTable( + name: "GpsPositions"); + + migrationBuilder.DropTable( + name: "PagerMessages"); + } + } +} diff --git a/Migrations/PagerContextModelSnapshot.cs b/Migrations/PagerContextModelSnapshot.cs new file mode 100644 index 0000000..879c13f --- /dev/null +++ b/Migrations/PagerContextModelSnapshot.cs @@ -0,0 +1,156 @@ +// +using System; +using Microsoft.EntityFrameworkCore; +using Microsoft.EntityFrameworkCore.Infrastructure; +using Microsoft.EntityFrameworkCore.Storage.ValueConversion; +using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata; +using PagerParser; + +#nullable disable + +namespace PagerParser.Migrations +{ + [DbContext(typeof(PagerContext))] + partial class PagerContextModelSnapshot : ModelSnapshot + { + protected override void BuildModel(ModelBuilder modelBuilder) + { +#pragma warning disable 612, 618 + modelBuilder + .HasAnnotation("ProductVersion", "7.0.8") + .HasAnnotation("Relational:MaxIdentifierLength", 63); + + NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder); + + modelBuilder.Entity("PagerParser.GpsPosition", b => + { + b.Property("GpsPositionId") + .ValueGeneratedOnAdd() + .HasColumnType("integer"); + + NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property("GpsPositionId")); + + b.Property("Latitude") + .HasColumnType("double precision"); + + b.Property("Longitude") + .HasColumnType("double precision"); + + b.HasKey("GpsPositionId"); + + b.ToTable("GpsPositions"); + }); + + modelBuilder.Entity("PagerParser.PagerMessage", b => + { + b.Property("PagerMessageId") + .ValueGeneratedOnAdd() + .HasColumnType("integer"); + + NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property("PagerMessageId")); + + b.Property("Message") + .IsRequired() + .HasColumnType("text"); + + b.Property("Timestamp") + .HasColumnType("timestamp with time zone"); + + b.HasKey("PagerMessageId"); + + b.HasIndex("Message"); + + b.ToTable("PagerMessages"); + }); + + modelBuilder.Entity("PagerParser.ParsedPagerMessage", b => + { + b.Property("ParsedPagerMessageId") + .ValueGeneratedOnAdd() + .HasColumnType("integer"); + + NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property("ParsedPagerMessageId")); + + b.Property("AlertLevel") + .HasColumnType("integer"); + + b.Property("AssignmentArea") + .IsRequired() + .HasColumnType("text"); + + b.Property("AttendingServices") + .HasColumnType("integer"); + + b.Property("Description") + .IsRequired() + .HasColumnType("text"); + + b.Property("FireGroundChannel") + .HasColumnType("integer"); + + b.Property("FirecomJobNo") + .HasColumnType("integer"); + + b.Property("GpsPositionId") + .HasColumnType("integer"); + + b.Property("GridReference") + .HasColumnType("integer"); + + b.Property("JobType") + .IsRequired() + .HasColumnType("text"); + + b.Property("MelwaysGrid") + .HasColumnType("text"); + + b.Property("MelwaysMapNo") + .HasColumnType("integer"); + + b.Property("Note") + .HasColumnType("text"); + + b.Property("PageDestination") + .IsRequired() + .HasColumnType("text"); + + b.Property("PagerMessage") + .HasColumnType("integer"); + + b.HasKey("ParsedPagerMessageId"); + + b.HasIndex("FirecomJobNo"); + + b.HasIndex("GpsPositionId"); + + b.HasIndex("PagerMessage") + .IsUnique(); + + b.ToTable("ParsedPagerMessages"); + }); + + modelBuilder.Entity("PagerParser.ParsedPagerMessage", b => + { + b.HasOne("PagerParser.GpsPosition", "GpsPosition") + .WithMany() + .HasForeignKey("GpsPositionId"); + + b.HasOne("PagerParser.PagerMessage", "OriginalMessage") + .WithOne("ParsedMessage") + .HasForeignKey("PagerParser.ParsedPagerMessage", "PagerMessage") + .OnDelete(DeleteBehavior.Cascade) + .IsRequired(); + + b.Navigation("GpsPosition"); + + b.Navigation("OriginalMessage"); + }); + + modelBuilder.Entity("PagerParser.PagerMessage", b => + { + b.Navigation("ParsedMessage"); + }); +#pragma warning restore 612, 618 + } + } +} diff --git a/PagerContext.cs b/PagerContext.cs new file mode 100644 index 0000000..73e675f --- /dev/null +++ b/PagerContext.cs @@ -0,0 +1,17 @@ +using Microsoft.EntityFrameworkCore; + +namespace PagerParser; + +public class PagerContext : DbContext { + public DbSet PagerMessages { get; set; } + public DbSet ParsedPagerMessages { get; set; } + public DbSet GpsPositions { get; set; } + + private IConfiguration config; + + public PagerContext(IConfiguration config) => + this.config = config; + + protected override void OnConfiguring(DbContextOptionsBuilder options) => + options.UseNpgsql(config.GetConnectionString("DefaultConnection")); +} \ No newline at end of file diff --git a/PagerFetchService.cs b/PagerFetchService.cs new file mode 100644 index 0000000..97a03d5 --- /dev/null +++ b/PagerFetchService.cs @@ -0,0 +1,62 @@ +using PagerParser.Sites; + +namespace PagerParser; + +// Self-explanatory... Hosted background services that periodically fetches +// pager messages, tries to parse them, then adds both the raw pager message +// as well as the parsed message contents to the DB, ignoring already fetched +// messages in the process. +public class PagerFetchService : IHostedService { + private readonly TimeSpan FetchInterval = TimeSpan.FromMinutes(15); + + private IServiceProvider serviceProvider; + private IPagerMessageParserService parser; + + private Timer fetchTimer; + + private PagerMon pagerMon = new(); + + public PagerFetchService(IServiceProvider serviceProvider, IPagerMessageParserService parser) { + this.serviceProvider = serviceProvider; + this.parser = parser; + fetchTimer = new Timer(Fetch); + } + + public Task StartAsync(CancellationToken cancellationToken) { + fetchTimer.Change(TimeSpan.Zero, FetchInterval); + return Task.CompletedTask; + } + + public Task StopAsync(CancellationToken cancellationToken) { + fetchTimer.Change(Timeout.Infinite, Timeout.Infinite); + return Task.CompletedTask; + } + + private void Fetch(object? state) { + using var scope = serviceProvider.CreateScope(); + var db = scope.ServiceProvider.GetRequiredService(); + + // Fetch pager messages, ignoring message we've already got + var messages = pagerMon + .Fetch() + .Where(m => + !db.PagerMessages + .Select(m => m.Message) + .Contains(m.Message)); + + // Attempt to parse each newly-fetched message. + // Failure to parse isn't critical, as we still keep the raw message. + foreach(var message in messages) { + message.ParsedMessage = parser.TryParse(message.Message); + if(message.ParsedMessage is not null) + message.ParsedMessage.GpsPosition = + PositionCalculator.GetGpsPosition(message.ParsedMessage); + } + + db.AddRange(messages); + db.SaveChanges(); + } + + public void Dispose() => + fetchTimer.Dispose(); +} diff --git a/PagerMessage.cs b/PagerMessage.cs new file mode 100644 index 0000000..dc30a05 --- /dev/null +++ b/PagerMessage.cs @@ -0,0 +1,124 @@ +using Microsoft.EntityFrameworkCore; +using System.ComponentModel.DataAnnotations; +using System.ComponentModel.DataAnnotations.Schema; +using System.Text.RegularExpressions; + +namespace PagerParser; + +public enum AlertLevel { + Code1 = 1, + Code3 = 3 +} + +[Flags] +public enum EmergencyService { + Ambulance = 1, + Fire = 2, + Police = 3, + Rescue = 4, + SES = 5 +} + +[Index(nameof(Message))] +public class PagerMessage { + [DatabaseGenerated(DatabaseGeneratedOption.Identity)] + public int PagerMessageId { get; set; } + public DateTime Timestamp { get; set; } + public string Message { get; set; } + + public virtual ParsedPagerMessage? ParsedMessage { get; set; } + + public override int GetHashCode() => + (Timestamp, Message).GetHashCode(); +} + +[Index(nameof(FirecomJobNo))] +public class ParsedPagerMessage { + [DatabaseGenerated(DatabaseGeneratedOption.Identity)] + public int ParsedPagerMessageId { get; set; } + public int FirecomJobNo { get; set; } + public string AssignmentArea { get; set; } + public string JobType { get; set; } + public AlertLevel AlertLevel { get; set; } + public string Description { get; set; } + public int? MelwaysMapNo { get; set; } + public string? MelwaysGrid { get; set; } + public int? GridReference { get; set; } + public EmergencyService AttendingServices { get; set; } + public string? Note { get; set; } + public int? FireGroundChannel { get; set; } + public string PageDestination { get; set; } + + public virtual GpsPosition? GpsPosition { get; set; } + + [ForeignKey(nameof(PagerMessage))] + public virtual PagerMessage OriginalMessage { get; set; } +} + +public interface IPagerMessageParserService { + public ParsedPagerMessage Parse(string message); + public ParsedPagerMessage? TryParse(string message); +} + +// We run the pager message parser as a service with a single instance +// as this allows us to pre-compile the parsing regular expression +// which will help when potentially processing 1000's of pager messages. +// +// Running a single instance of the service isn't an issue, as this +// service is only used by the fetch service for parsing new messages. +public class PagerMessageParserService : IPagerMessageParserService { + private const string Pattern = + @"^@@ALERT\s+([A-Z]+[0-9]+)\s+([A-Z&]+)C([13])\s+(.*)\s+M\s+(\d+)\s+([A-Z]\d+)\s+\((\d+)\)\s+(\*\s+[^*]+\*\s+)?([AFPRS]+)\s+((C[A-Z]+)\s+)+FGD(\d+)\s+(P\d+\s+)?F(\d+)\s+\[([A-Z]+)\]$"; + + private Regex pageMessageRegex = new Regex(Pattern, RegexOptions.Compiled | RegexOptions.IgnoreCase); + + public ParsedPagerMessage Parse(string message) { + ParsedPagerMessage m = new(); + + var match = pageMessageRegex.Match(message); + + if(!match.Success) + throw new ArgumentException(); + + // Parse non-optional message components + m.AssignmentArea = match.Groups[1].Value; + m.JobType = match.Groups[2].Value; + m.Description = match.Groups[4].Value; + m.FirecomJobNo = Int32.Parse(match.Groups[14].Value); + m.PageDestination = match.Groups[15].Value; + + // Parse optional message components + if(match.Groups[5].Success) m.MelwaysMapNo = Int32.Parse(match.Groups[5].Value); + if(match.Groups[6].Success) m.MelwaysGrid = match.Groups[6].Value; + if(match.Groups[7].Success) m.GridReference = Int32.Parse(match.Groups[7].Value); + if(match.Groups[8].Success) m.Note = match.Groups[8].Value; + if(match.Groups[12].Success) m.FireGroundChannel = Int32.Parse(match.Groups[12].Value); + + switch(match.Groups[3].Value) { + case "1": m.AlertLevel = AlertLevel.Code1; break; + case "3": m.AlertLevel = AlertLevel.Code3; break; + default: throw new ArgumentException(); + } + + // Handle each character to construct a bitmap of attending services + foreach(char c in match.Groups[9].Value) { + switch(c) { + case 'A': m.AttendingServices |= EmergencyService.Ambulance; break; + case 'F': m.AttendingServices |= EmergencyService.Fire; break; + case 'P': m.AttendingServices |= EmergencyService.Police; break; + case 'R': m.AttendingServices |= EmergencyService.Rescue; break; + case 'S': m.AttendingServices |= EmergencyService.SES; break; + } + } + + return m; + } + + public ParsedPagerMessage? TryParse(string message) { + try { + return Parse(message); + } catch { + return null; + } + } +} \ No newline at end of file diff --git a/PagerParser.csproj b/PagerParser.csproj new file mode 100644 index 0000000..0652e9b --- /dev/null +++ b/PagerParser.csproj @@ -0,0 +1,22 @@ + + + + net7.0 + enable + enable + + + + + + + + + + all + runtime; build; native; contentfiles; analyzers; buildtransitive + + + + + \ No newline at end of file diff --git a/PositionCalculator.cs b/PositionCalculator.cs new file mode 100644 index 0000000..8d8a94f --- /dev/null +++ b/PositionCalculator.cs @@ -0,0 +1,100 @@ +using CoordinateSharp; +using PagerParser; +using System; +using System.ComponentModel.DataAnnotations.Schema; +using System.Text.RegularExpressions; + +namespace PagerParser; + +public class GpsPosition { + [DatabaseGenerated(DatabaseGeneratedOption.Identity)] + public int GpsPositionId { get; set; } + public double Latitude { get; set; } + public double Longitude { get; set; } +} + +public record MelwaysPage { + public int PageNo { get; set; } + public double Latitude { get; set; } + public double Longitude { get; set; } +} + +// Derive roughly-accurate GPS coordinates from a Melways page number +// and grid number (e.g: 131 D7) by looking up the origin coordinates +// of the Melways page from a pre-defined table, then interpolating +// the grid number across the page to get a (very) rough position. +public class PositionCalculator { + private const float PageWidth = 0.0583403752108005f; + private const float PageHeight = 0.0444074086328539f; + + private const int ColCount = 10; + private const int RowCount = 12; + + private const float ColWidth = PageWidth / ColCount; + private const float RowHeight = PageHeight / RowCount; + + private static readonly MelwaysPage[] MelwaysPages = { + new MelwaysPage { PageNo = 94, Latitude = -38.0062431030181, Longitude = 145.153465677450 }, + new MelwaysPage { PageNo = 95, Latitude = -38.0061349929752, Longitude = 145.197873798763 }, + new MelwaysPage { PageNo = 96, Latitude = -38.0060458242193, Longitude = 145.242282747795 }, + new MelwaysPage { PageNo = 98, Latitude = -38.0501502394990, Longitude = 145.153538108815 }, + new MelwaysPage { PageNo = 110, Latitude = -38.0059397267576, Longitude = 145.286740799198 }, + new MelwaysPage { PageNo = 111, Latitude = -38.0058646642328, Longitude = 145.331164408607 }, + new MelwaysPage { PageNo = 128, Latitude = -38.0500712736303, Longitude = 145.197997939698 }, + new MelwaysPage { PageNo = 129, Latitude = -38.0499811306888, Longitude = 145.242424322651 }, + new MelwaysPage { PageNo = 130, Latitude = -38.0498760059982, Longitude = 145.286857218675 }, + new MelwaysPage { PageNo = 131, Latitude = -38.0497905233513, Longitude = 145.331303121527 }, + new MelwaysPage { PageNo = 212, Latitude = -38.0056782419614, Longitude = 145.375580424547 }, + new MelwaysPage { PageNo = 213, Latitude = -38.0055063939227, Longitude = 145.419999796841 }, + new MelwaysPage { PageNo = 214, Latitude = -38.0496145139129, Longitude = 145.375744441368 }, + new MelwaysPage { PageNo = 215, Latitude = -38.0494726543543, Longitude = 145.420190429893 }, + new MelwaysPage { PageNo = 315, Latitude = -38.0053618479218, Longitude = 145.464319398407 }, + new MelwaysPage { PageNo = 317, Latitude = -38.0493097638301, Longitude = 145.464666307851 } + }; + + public static GpsPosition? GetGpsPosition(ParsedPagerMessage message) { + if(message.MelwaysMapNo is null || message.MelwaysGrid is null) + return null; + var page = MelwaysPages.FirstOrDefault(p => p.PageNo == message.MelwaysMapNo); + if(page is null) + return null; + + var match = Regex.Match(message.MelwaysGrid.ToUpper(), "^([A-HJ-K])([0-9]+)$"); + if(!match.Success) + return null; + + var row = int.Parse(match.Groups[2].Value) - 1; + var col = match.Groups[1].Value[0] - 'A'; + if(col > 7) + col -= 1; // Compensate for Melways grids skipping 'I' + + var position = new GpsPosition { + Latitude = page.Latitude - (row * RowHeight) - (RowHeight / 2), + Longitude = page.Longitude + (col * ColWidth) + (ColWidth / 2) + }; + + if(message.GridReference is null) + return position; + + // If we have a 6-digit grid reference, try to refine the location further + // using the UTM coordinate system. Since zone information isn't included + // in a 6-digit grid reference, we use the coordinates calculated from the + // Melways as a starting point to find the zone. + + double gridRef = (double) message.GridReference; + + var origUTM = new Coordinate(position.Latitude, position.Longitude).UTM; + var newUTM = new UniversalTransverseMercator( + origUTM.LatZone, + origUTM.LongZone, + (Math.Floor(origUTM.Easting / 100000) * 100000) + (Math.Floor(gridRef / 1000) * 100), + (Math.Floor(origUTM.Northing / 100000) * 100000) + ((gridRef % 1000) * 100)); + + var coord = UniversalTransverseMercator.ConvertUTMtoLatLong(newUTM); + + position.Latitude = coord.Latitude.ToDouble(); + position.Longitude = coord.Longitude.ToDouble(); + + return position; + } +} \ No newline at end of file diff --git a/Program.cs b/Program.cs new file mode 100644 index 0000000..ba53ccb --- /dev/null +++ b/Program.cs @@ -0,0 +1,71 @@ +using Microsoft.EntityFrameworkCore; +using System.Text.Json.Serialization; + +namespace PagerParser; + +public class Program { + public static void Main(string[] args) { + var builder = WebApplication.CreateBuilder(args); + + builder.Services.AddDbContext(); + + // This is necessary if we don't want enum values sent as integers in JSON objects + builder.Services.AddControllers().AddJsonOptions(o => { + var converter = new JsonStringEnumConverter(); + o.JsonSerializerOptions.Converters.Add(converter); + }); + + builder.Services.AddCors(); + + // Add our custom services + builder.Services.AddSingleton(); + builder.Services.AddHostedService(); + + var app = builder.Build(); + + // Create a temporary scope so that we can access services during startup + using var scope = app.Services.CreateScope(); + var config = scope.ServiceProvider.GetRequiredService(); + var parser = scope.ServiceProvider.GetRequiredService(); + + // Ensure the database is created and the correct schema is used + // If we did update the database schema, attempt to re-parse all + // messages. + using var db = scope.ServiceProvider.GetRequiredService(); + var needsMigration = db.Database.GetPendingMigrations().Any(); + db.Database.Migrate(); + + if(config.GetValue("PagerParser:ReparseAllOnStartup")) { + db.ParsedPagerMessages.RemoveRange( + db.ParsedPagerMessages.ToArray()); + db.SaveChanges(); + foreach(var message in db.PagerMessages) { + message.ParsedMessage = parser.TryParse(message.Message); + if(message.ParsedMessage is not null) + message.ParsedMessage.GpsPosition = + PositionCalculator.GetGpsPosition(message.ParsedMessage); + } + db.SaveChanges(); + } else if(config.GetValue("PagerParser:ReparseFailedOnStartup")) { + foreach(var message in db.PagerMessages.Where(m => m.ParsedMessage == null)) { + message.ParsedMessage = parser.TryParse(message.Message); + if(message.ParsedMessage is not null) + if(message.ParsedMessage.GpsPosition is null) + message.ParsedMessage.GpsPosition = + PositionCalculator.GetGpsPosition(message.ParsedMessage); + } + db.SaveChanges(); + } + + // Start the server + app.UseCors(p => p + .AllowAnyOrigin() + .AllowAnyMethod() + .AllowAnyHeader()); + app.UseHttpsRedirection(); + app.UseHsts(); + app.UseStaticFiles(); + app.MapControllers(); + app.Run(); + } +} diff --git a/Properties/launchSettings.json b/Properties/launchSettings.json new file mode 100644 index 0000000..76b65da --- /dev/null +++ b/Properties/launchSettings.json @@ -0,0 +1,11 @@ +{ + "profiles": { + "PagerParser": { + "commandName": "Project", + "environmentVariables": { + "ASPNETCORE_ENVIRONMENT": "Development" + }, + "applicationUrl": "https://localhost:2979;http://localhost:2980" + } + } +} \ No newline at end of file diff --git a/README.md b/README.md new file mode 100644 index 0000000..041caa1 --- /dev/null +++ b/README.md @@ -0,0 +1,35 @@ +# About + +Pager Parser is a service designed to act as a "central hub" for pager messages. Pager Parser receives pager messages, parses them, stores them and can initiate actions based on their contents. + +# Features +- Flexible framework designed to receive pager messages from a variety of data sources such as [PagerMon](https://github.com/pagermon/pagermon) ([Jobyyy](https://jobyyy.net/)) +- Parsing of useful information from pager messages such as job type, paged services, etc +- Storage of received pager messages for archival purposes +- Storage of parsed pager message data for archival as well as generating useful metrics + +# Building + +### Pre-requisites + +To build the project, the .NET 7.0 SDK is required + +### Standalone + +To build the project, simply execute the following command from the project base directory: + +```sh +dotnet build -c Release +``` + +The resulting output files may be found in the `bin/Release` directory + +# Deployment + +### Configuration + +To configure the project, simply edit the `appsettings.json` file, populating the desired sections + +### Standalone + +Standalone deployments of the project are current not supported in any official capacity. It is possible to run the project as a standalone deployment by registering the main executable to be started automatically and persisted in the background. This may be achieved on Linux using a systemd unit file or on Windows as an auto-start program. diff --git a/Sites/PagerMon.cs b/Sites/PagerMon.cs new file mode 100644 index 0000000..fb25323 --- /dev/null +++ b/Sites/PagerMon.cs @@ -0,0 +1,36 @@ +namespace PagerParser.Sites; + +// Interface class for fetching pager messages from PagerMon +// sites such as Jobyyy over HTTP. +public class PagerMon { + public record PagerMonMessage { + public long Timestamp { get; set; } + public string Message { get; set; } + } + + public record PagerMonQueryResponse { + public PagerMonMessage[] Messages { get; set; } + } + + private const string QueryUrl = + "https://jobyyy.net/api/messageSearch?alias=6&limit=100"; + + private HttpClient httpClient = new(); + + public PagerMessage[] Fetch() { + List messages = new(); + + var result = httpClient + .GetFromJsonAsync(QueryUrl) + .GetAwaiter() + .GetResult(); + + if(result is null) + return Array.Empty(); + + return result.Messages.Select(m => new PagerMessage() { + Timestamp = DateTimeOffset.FromUnixTimeSeconds(m.Timestamp).DateTime.ToUniversalTime(), + Message = m.Message + }).ToArray(); + } +} \ No newline at end of file diff --git a/appsettings.json b/appsettings.json new file mode 100644 index 0000000..624334b --- /dev/null +++ b/appsettings.json @@ -0,0 +1,9 @@ +{ + "PagerParser": { + "ReparseAllOnStartup": false, + "ReparseFailedOnStartup": true + }, + "ConnectionStrings": { + "DefaultConnection": "Host=127.0.0.1;Database=PagerParser;Username=pagerparser;Password=password" + } +} \ No newline at end of file -- cgit v1.3