Plinth.Common 1.6.4

README

Plinth.Common

A set of generic utilities, extensions, and enhancements for dotnet applications

Cache

Extensions for atomic GetOrCreate on Microsoft.Extensions.Caching.Memory memory caches Example:

IMemoryCache memCache = MemoryCacheUtil.Create();
await memCache.GetOrCreateAtomicMaxDurationAsync(
	"key", TimeSpan.FromMinutes(2), async () => await LoadValue());

👉 MemoryCacheUtil.Create() is a shorthand method for creating a new IMemoryCache.

Collections

• Case Insensitive Dictionary and HashSet
• Default Dictionary that will supply a default value for a key when requested
• Examples:

// values are case insensitive
var set = new CaseInsensitiveHashSet<string>() { "abc", "ABC" };
set.Contains("aBc"); // true

// LINQ extension
var set = items.Where(...).Select(...).ToCaseInsensitiveHashSet();

// keys are case insensitive
var dict = new CaseInsensitiveDictionary<string, int>() { ["abc"] = 5 };
dict["ABC"]; // 5
dict.ContainsKey("aBc"); // true

// LINQ extension
var dict = items.Where(...).Select(...).ToCaseInsensitiveDictionary(v => v.ID);

// default dictionary, easy counting
var dict = new DefaultDictionary<string, int>(0);
dict["a"]++; // dict["a"] now is 1

// default dictionary, easy multi maps
var dict = new DefaultDictionary<string, ISet<int>>(() => new HashSet<int>());
dict["a"].Add(7); // "a" has a set with (7) in it

Constants

Handy constants for Content Types ContentTypes.ApplicationJson ⇒ "application/json; charset=utf-8"

Exceptions

Logical exceptions for common API return values. Allows for separation between logic and api projects

• LogicalBadRequestException
• LogicalConflictException
• LogicalForbiddenException
• LogicalNotFoundException
• LogicalPreconditionFailedException

Extensions

A variety of useful extensions to common classes

• For manipulating DataRow
• IDictionary .GetValueOrDefault()
• IEnumerable .IsNullOrEmpty() and .Many()
• Enum extensions for converting between enums by name (not by integer value)
• ILogger extensions for logging code durations

using (log.LogExecTiming("some code"))
{
	... some code ...
	log.Debug("action");
}
// logs
[CTX-6540F] : Starting some code #52400089
[CTX-6540F] : action
[CTX-6540F] : some code #52400089 Took: 00.00.00.274472

• Sensitive data extensions for masking secure items like passwords, SSNs, and credit card numbers.
• Stream extensions .ToBytes() and .ToBytesAsync()
• String extensions for converting strings to various types, .ChangeType<T>() as various .To{Type}OrNull()

Logging

• Extensions and enhancements to Microsoft.Extensions.ILogger for better tracing when using the Plinth ecosystem
• Provides StaticLogManager.GetLogger() to retrieve a static logger for the current class
• Provides RequestTraceId and RequestTraceProperties singletons for passing data through the entire call stack (including across HTTP boundaries)
• Adds shorthand calls for shorter log function names.
  • LogTrace ⇒ Trace
  • LogDebug ⇒ Debug
  • LogInformation ⇒ Info
  • LogWarning ⇒ Warn
  • LogError ⇒ Error
  • LogCritical ⇒ Critical or Fatal

Mapping

An enhanced version of Omu.ValueInjecter for easy object to object mapping Allows for deeply nested Field to Field mapping (including Lists, Sets, and Dictionaries)

Utils

A set of static utilities

• AsyncUtil: Some async utilities, mostly obsolete as of .NET 6
• DateTimeUtil: Utilities for truncating date times, UTC/TZ conversions, and some date comparison functions
• HexUtil: Conversion of hex strings to bytes and vice versa. E.g. "1a5b" <=> new byte[] { 0x1a, 0x5b }
• RuntimeUtil: Provides FindExecutableHome() which can find your project root at runtime
• TimeUtil: Provides log timing (used by ILogger extension noted above)
• UriUtil: Provides a Join() method similar to Path.Combine()