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OrmLiteCacheClient.Async.cs
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OrmLiteCacheClient.Async.cs
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using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Threading;
using System.Threading.Tasks;
using ServiceStack.OrmLite;
using ServiceStack.Text;
namespace ServiceStack.Caching;
public partial class OrmLiteCacheClient<TCacheEntry> : ICacheClientAsync, IRemoveByPatternAsync
{
public async Task<T> ExecAsync<T>(Func<IDbConnection, Task<T>> action, CancellationToken token=default)
{
using (JsConfig.With(new Config { ExcludeTypeInfo = false }))
using (var db = await DbFactory.OpenAsync(token).ConfigAwait())
{
return await action(db).ConfigAwait();
}
}
public async Task ExecAsync(Func<IDbConnection,Task> action, CancellationToken token=default)
{
using (JsConfig.With(new Config { ExcludeTypeInfo = false }))
using (var db = await DbFactory.OpenAsync(token).ConfigAwait())
{
await action(db).ConfigAwait();
}
}
public async Task<bool> RemoveAsync(string key, CancellationToken token=default)
{
return await ExecAsync(async db =>
await db.DeleteByIdAsync<TCacheEntry>(key, token: token).ConfigAwait() > 0, token).ConfigAwait();
}
public async Task RemoveAllAsync(IEnumerable<string> keys, CancellationToken token=default)
{
await ExecAsync(async db =>
await db.DeleteByIdsAsync<TCacheEntry>(keys, token: token).ConfigAwait() > 0, token).ConfigAwait();
}
public async Task<T> GetAsync<T>(string key, CancellationToken token=default)
{
return await ExecAsync(async db =>
{
var cache = Verify(db, await db.SingleByIdAsync<TCacheEntry>(key, token).ConfigAwait());
return cache == null
? default
: db.Deserialize<T>(cache.Data);
}, token).ConfigAwait();
}
public async Task<long> IncrementAsync(string key, uint amount, CancellationToken token=default)
{
return await ExecAsync(async db =>
{
long nextVal;
using var dbTrans = db.OpenTransaction(IsolationLevel.ReadCommitted);
var cache = Verify(db, await db.SingleByIdAsync<TCacheEntry>(key, token).ConfigAwait());
if (cache == null)
{
nextVal = amount;
await db.InsertAsync(CreateEntry(key, nextVal.ToString()), token: token).ConfigAwait();
}
else
{
nextVal = long.Parse(cache.Data) + amount;
cache.Data = nextVal.ToString();
await db.UpdateAsync(cache, token: token).ConfigAwait();
}
dbTrans.Commit();
return nextVal;
}, token).ConfigAwait();
}
public async Task<long> DecrementAsync(string key, uint amount, CancellationToken token=default)
{
return await ExecAsync(async db =>
{
long nextVal;
using var dbTrans = db.OpenTransaction(IsolationLevel.ReadCommitted);
var cache = Verify(db, await db.SingleByIdAsync<TCacheEntry>(key, token).ConfigAwait());
if (cache == null)
{
nextVal = -amount;
await db.InsertAsync(CreateEntry(key, nextVal.ToString()), token: token).ConfigAwait();
}
else
{
nextVal = long.Parse(cache.Data) - amount;
cache.Data = nextVal.ToString();
await db.UpdateAsync(cache, token: token).ConfigAwait();
}
dbTrans.Commit();
return nextVal;
}, token).ConfigAwait();
}
public async Task<bool> AddAsync<T>(string key, T value, CancellationToken token=default)
{
try
{
await ExecAsync(async db =>
{
await db.InsertAsync(CreateEntry(key, db.Serialize(value)), token: token).ConfigAwait();
}, token).ConfigAwait();
return true;
}
catch (Exception)
{
return false;
}
}
private static async Task<bool> UpdateIfExistsAsync<T>(IDbConnection db, string key, T value, CancellationToken token=default)
{
var exists = await db.UpdateOnlyAsync(() => new TCacheEntry
{
Id = key,
Data = db.Serialize(value),
ModifiedDate = DateTime.UtcNow,
},
@where: q => q.Id == key, token: token).ConfigAwait() == 1;
return exists;
}
private static async Task<bool> UpdateIfExistsAsync<T>(IDbConnection db, string key, T value, DateTime expiresAt, CancellationToken token=default)
{
var exists = await db.UpdateOnlyAsync(() => new TCacheEntry
{
Id = key,
Data = db.Serialize(value),
ExpiryDate = expiresAt,
ModifiedDate = DateTime.UtcNow,
},
@where: q => q.Id == key, token: token).ConfigAwait() == 1;
return exists;
}
public async Task<bool> SetAsync<T>(string key, T value, CancellationToken token=default)
{
return await ExecAsync(async db =>
{
var exists = await UpdateIfExistsAsync(db, key, value, token).ConfigAwait();
if (!exists)
{
try
{
await db.InsertAsync(CreateEntry(key, db.Serialize(value)), token: token).ConfigAwait();
}
catch (Exception)
{
exists = await UpdateIfExistsAsync(db, key, value, token).ConfigAwait();
if (!exists) throw;
}
}
return true;
}, token).ConfigAwait();
}
public async Task<bool> ReplaceAsync<T>(string key, T value, CancellationToken token=default)
{
return await ExecAsync(async db =>
{
var exists = await db.UpdateOnlyAsync(() => new TCacheEntry
{
Id = key,
Data = db.Serialize(value),
ModifiedDate = DateTime.UtcNow,
},
where: q => q.Id == key, token: token).ConfigAwait() == 1;
if (!exists)
{
await db.InsertAsync(CreateEntry(key, db.Serialize(value)), token: token).ConfigAwait();
}
return true;
}, token).ConfigAwait();
}
public async Task<bool> AddAsync<T>(string key, T value, DateTime expiresAt, CancellationToken token=default)
{
try
{
await ExecAsync(async db =>
{
await db.InsertAsync(CreateEntry(key, db.Serialize(value), expires: expiresAt), token: token).ConfigAwait();
}, token).ConfigAwait();
return true;
}
catch (Exception)
{
return false;
}
}
public async Task<bool> SetAsync<T>(string key, T value, DateTime expiresAt, CancellationToken token=default)
{
return await ExecAsync(async db =>
{
var exists = await UpdateIfExistsAsync(db, key, value, expiresAt, token).ConfigAwait();
if (!exists)
{
try
{
await db.InsertAsync(CreateEntry(key, db.Serialize(value), expires: expiresAt), token: token).ConfigAwait();
}
catch (Exception)
{
exists = await UpdateIfExistsAsync(db, key, value, expiresAt, token).ConfigAwait();
if (!exists) throw;
}
}
return true;
}, token).ConfigAwait();
}
public async Task<bool> ReplaceAsync<T>(string key, T value, DateTime expiresAt, CancellationToken token=default)
{
return await ExecAsync(async db =>
{
var exists = await db.UpdateOnlyAsync(() => new TCacheEntry
{
Id = key,
Data = db.Serialize(value),
ExpiryDate = expiresAt,
ModifiedDate = DateTime.UtcNow,
},
where: q => q.Id == key, token: token).ConfigAwait() == 1;
if (!exists)
{
await db.InsertAsync(CreateEntry(key, db.Serialize(value), expires: expiresAt), token: token).ConfigAwait();
}
return true;
}, token).ConfigAwait();
}
public async Task<bool> AddAsync<T>(string key, T value, TimeSpan expiresIn, CancellationToken token=default)
{
try
{
await ExecAsync(async db =>
{
await db.InsertAsync(CreateEntry(key, db.Serialize(value),
expires: DateTime.UtcNow.Add(expiresIn)), token: token).ConfigAwait();
}, token).ConfigAwait();
return true;
}
catch (Exception)
{
return false;
}
}
public async Task<bool> SetAsync<T>(string key, T value, TimeSpan expiresIn, CancellationToken token=default)
{
return await ExecAsync(async db =>
{
var exists = await UpdateIfExistsAsync(db, key, value, DateTime.UtcNow.Add(expiresIn), token).ConfigAwait();
if (!exists)
{
try
{
await db.InsertAsync(CreateEntry(key, db.Serialize(value), expires: DateTime.UtcNow.Add(expiresIn)), token: token).ConfigAwait();
}
catch (Exception)
{
exists = await UpdateIfExistsAsync(db, key, value, DateTime.UtcNow.Add(expiresIn), token).ConfigAwait();
if (!exists) throw;
}
}
return true;
}, token).ConfigAwait();
}
public async Task<bool> ReplaceAsync<T>(string key, T value, TimeSpan expiresIn, CancellationToken token=default)
{
return await ExecAsync(async db =>
{
var exists = await db.UpdateOnlyAsync(() => new TCacheEntry
{
Id = key,
Data = db.Serialize(value),
ExpiryDate = DateTime.UtcNow.Add(expiresIn),
ModifiedDate = DateTime.UtcNow,
},
where: q => q.Id == key, token: token).ConfigAwait() == 1;
if (!exists)
{
await db.InsertAsync(CreateEntry(key, db.Serialize(value), expires: DateTime.UtcNow.Add(expiresIn)), token: token).ConfigAwait();
}
return true;
}, token).ConfigAwait();
}
public async Task FlushAllAsync(CancellationToken token=default)
{
await ExecAsync(async db =>
{
await db.DeleteAllAsync<TCacheEntry>(token).ConfigAwait();
}, token).ConfigAwait();
}
public async Task<IDictionary<string, T>> GetAllAsync<T>(IEnumerable<string> keys, CancellationToken token=default)
{
return await ExecAsync(async db =>
{
var results = Verify(db, await db.SelectByIdsAsync<TCacheEntry>(keys, token).ConfigAwait());
var map = new Dictionary<string, T>();
results.Each(x =>
map[x.Id] = db.Deserialize<T>(x.Data));
foreach (var key in keys)
{
if (!map.ContainsKey(key))
map[key] = default;
}
return map;
}, token).ConfigAwait();
}
public async Task SetAllAsync<T>(IDictionary<string, T> values, CancellationToken token=default)
{
await ExecAsync(async db =>
{
var rows = values.Select(entry =>
CreateEntry(entry.Key, db.Serialize(entry.Value)))
.ToList();
await db.InsertAllAsync(rows, token).ConfigAwait();
}, token).ConfigAwait();
}
public async Task<TimeSpan?> GetTimeToLiveAsync(string key, CancellationToken token=default)
{
return await ExecAsync(async db =>
{
var cache = await db.SingleByIdAsync<TCacheEntry>(key, token).ConfigAwait();
if (cache == null)
return null;
if (cache.ExpiryDate == null)
return TimeSpan.MaxValue;
return cache.ExpiryDate - DateTime.UtcNow;
}, token).ConfigAwait();
}
public async Task RemoveByPatternAsync(string pattern, CancellationToken token=default)
{
await ExecAsync(async db => {
var dbPattern = pattern.Replace('*', '%');
var dialect = db.GetDialectProvider();
await db.DeleteAsync<TCacheEntry>(dialect.GetQuotedColumnName("Id") + " LIKE " + dialect.GetParam("dbPattern"),
new { dbPattern }, token).ConfigAwait();
}, token).ConfigAwait();
}
public async IAsyncEnumerable<string> GetKeysByPatternAsync(string pattern, [EnumeratorCancellation] CancellationToken token = default)
{
var results = await ExecAsync(async db =>
{
if (pattern == "*")
return await db.ColumnAsync<string>(db.From<TCacheEntry>().Select(x => x.Id), token).ConfigAwait();
var dbPattern = pattern.Replace('*', '%');
var dialect = db.Dialect();
var id = dialect.GetQuotedColumnName("Id");
return await db.ColumnAsync<string>(db.From<TCacheEntry>()
.Where(id + " LIKE {0}", dbPattern), token).ConfigAwait();
}, token).ConfigAwait();
foreach (var key in results)
{
token.ThrowIfCancellationRequested();
yield return key;
}
}
public ValueTask DisposeAsync() => default;
public async Task RemoveExpiredEntriesAsync(CancellationToken token=default)
{
await ExecAsync(async db =>
await db.DeleteAsync<TCacheEntry>(q => DateTime.UtcNow > q.ExpiryDate, token: token).ConfigAwait(), token).ConfigAwait();
}
public Task RemoveByRegexAsync(string regex, CancellationToken token=default) =>
throw new NotImplementedException();
}