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init task

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This commit is contained in:
Kyle Spearrin 2019-04-26 10:40:28 -04:00
parent 08c3aff60b
commit fb50123af0
1 changed files with 32 additions and 14 deletions
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42
src/Core/Services/LiteDbStorageService.cs
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@ -15,45 +15,63 @@ namespace Bit.Core.Services
}; };
private readonly string _dbPath; private readonly string _dbPath;
private LiteCollection<JsonItem> _collection; private LiteCollection<JsonItem> _collection;
private Task _initTask;
public LiteDbStorageService(string dbPath) public LiteDbStorageService(string dbPath)
{ {
_dbPath = dbPath; _dbPath = dbPath;
} }
public void Init() public Task InitAsync()
{ {
if(_collection == null) if(_collection != null)
{
return Task.FromResult(0);
}
if(_initTask != null)
{
return _initTask;
}
Task doTask()
{
try
{ {
var db = new LiteDatabase($"Filename={_dbPath};"); var db = new LiteDatabase($"Filename={_dbPath};");
_collection = db.GetCollection<JsonItem>("json_items"); _collection = db.GetCollection<JsonItem>("json_items");
return Task.FromResult(0);
} }
finally
{
_initTask = null;
}
};
_initTask = doTask();
return _initTask;
} }
public Task<T> GetAsync<T>(string key) public async Task<T> GetAsync<T>(string key)
{ {
Init(); await InitAsync();
var item = _collection.Find(i => i.Id == key).FirstOrDefault(); var item = _collection.Find(i => i.Id == key).FirstOrDefault();
if(item == null) if(item == null)
{ {
return Task.FromResult(default(T)); return default(T);
} }
return Task.FromResult(JsonConvert.DeserializeObject<T>(item.Value, _jsonSettings)); return JsonConvert.DeserializeObject<T>(item.Value, _jsonSettings);
} }
public Task SaveAsync<T>(string key, T obj) public async Task SaveAsync<T>(string key, T obj)
{ {
Init(); await InitAsync();
var data = JsonConvert.SerializeObject(obj, _jsonSettings); var data = JsonConvert.SerializeObject(obj, _jsonSettings);
_collection.Upsert(new JsonItem(key, data)); _collection.Upsert(new JsonItem(key, data));
return Task.FromResult(0);
} }
public Task RemoveAsync(string key) public async Task RemoveAsync(string key)
{ {
Init(); await InitAsync();
_collection.Delete(i => i.Id == key); _collection.Delete(i => i.Id == key);
return Task.FromResult(0);
} }
private class JsonItem private class JsonItem