private static async Task <IsItInTheCloudResult> IsItInTheCloud(string lookup, CloudTable table)
{
var(ip, host) = await IpUtils.IpFromUnknownInput(lookup);
string partitionKey = ip.AddressFamily == AddressFamily.InterNetwork ? "ipv4" : "ipv6";
var paddedIp = IpUtils.IpToPaddedDecimal(ip.ToString());
var pkFilter = TableQuery.GenerateFilterCondition(nameof(IPAddressEntity.PartitionKey), QueryComparisons.Equal, partitionKey);
var rkFilter = TableQuery.GenerateFilterCondition(nameof(IPAddressEntity.RowKey), QueryComparisons.GreaterThanOrEqual, paddedIp);
var combinedFilter = TableQuery.CombineFilters(pkFilter, TableOperators.And, rkFilter);
var query = new TableQuery <IPAddressEntity>
{
TakeCount = 1,
FilterString = combinedFilter
};
var querySegment = await table.ExecuteQuerySegmentedAsync(query, null);
var entity = querySegment.SingleOrDefault();
return(new IsItInTheCloudResult
{
HostName = host,
Ip = ip.ToString(),
Match = (entity == null || string.Compare(entity.LowerRange, paddedIp, StringComparison.Ordinal) > 0)
? null
: entity
});
}
public IPAddressEntity(string platform, string region, string service, string cidr)
{
var ip = IPNetwork.Parse(cidr);
var lowerRange = IpUtils.IpToPaddedDecimal(ip.FirstUsable.ToString());
var upperRange = IpUtils.IpToPaddedDecimal(ip.LastUsable.ToString());
var partitionKey = ip.AddressFamily == AddressFamily.InterNetwork ? IPv4PartitionKey : IPv6PartitionKey;
PartitionKey = partitionKey;
RowKey = upperRange;
LowerRange = lowerRange;
Platform = platform;
Region = region;
Service = service;
CIDR = cidr;
}