public async Task <(string url, bool permanent, bool preserveMethod)> TryGetUrlAsync(string idcode)
{
if (idcode.Length >= 3 && Int64.TryParse(idcode, out long discard))
{
var partkey = "";
var rowkey = "";
var chars = idcode.ToCharArray();
for (int i = 0; i < idcode.Length; i++)
{
if (i <= 1)
{
partkey += idcode[i];
}
else
{
rowkey += idcode[i];
}
}
CloudTable table = await TableExecutor <TableEntity> .CreateTableAsync("shorturls", _cloudStorage);
var result = await TableExecutor <ShorterData> .PointQueryAsync(table, partkey, rowkey);
if (result != null)
{
return(result.Url, result.Permanent, result.PreserveMethod);
}
}
return(String.Empty, false, true);
}
public async Task <bool> Init()
{
var table = await TableExecutor <TableEntity> .CreateTableAsync("shorturls", _cloudStorage);
for (int i = 0; i < 99; i++)
{
var partkey = i.ToString("00");
var index = await TableExecutor <IndexEntity> .PointQueryAsync(table, partkey, "index");
if (index == null)
{
index = new IndexEntity(partkey, "index", 0L);
await TableExecutor <IndexEntity> .InsertOrMergeEntityAsync(table, index);
}
TableIndex.AddOrUpdate(partkey, index.Index, (k, v) => v = index.Index);
}
return(true);
}
public async Task <string> TryAddNewUrlAsync(string url, bool permanent = false, bool preserve = true, bool statsCount = false)
{
CloudTable table = await TableExecutor <TableEntity> .CreateTableAsync("shorturls", _cloudStorage);
var id = GetNext();
var result = await TableExecutor <ShorterData> .InsertOnlyEntityAsync(table, new ShorterData()
{
Url = url, PartitionKey = id.table, RowKey = id.id, Permanent = permanent, PreserveMethod = preserve, Count = 0, StatCount = statsCount
});
if (result != null)
{
if (result.RowKey != "conflict")
{
//fnf
Task.Factory.StartNew(() => {
if (TableIndex.TryGetValue(result.PartitionKey, out long indexvalue))
{
TableExecutor <IndexEntity> .InsertOrMergeEntityAsync(table, new IndexEntity(result.PartitionKey, "index", indexvalue));
}
});
return(result.PartitionKey + result.RowKey);
}
else
{
//deal with conflict, retry 3 times then return fail (empty)
retryCount++;
if (retryCount <= 3)
{
return(await TryAddNewUrlAsync(url, permanent, preserve));
}
else
{
return(string.Empty);
}
}
}
return("error");
}