/// <summary>
/// This method will create a VPC, a public subnet, private subnet and a NAT EC2 instance to allow EC2 instances in the private
/// subnet to establish outbound connections to the internet.
/// </summary>
/// <param name="ec2Client">The ec2client used to create the VPC</param>
/// <param name="request">The properties used to create the VPC.</param>
/// <returns>The response contains all the VPC objects that were created.</returns>
public static LaunchVPCWithPublicAndPrivateSubnetsResponse LaunchVPCWithPublicAndPrivateSubnets(IAmazonEC2 ec2Client, LaunchVPCWithPublicAndPrivateSubnetsRequest request)
{
LaunchVPCWithPublicAndPrivateSubnetsResponse response = new LaunchVPCWithPublicAndPrivateSubnetsResponse();
LaunchVPCWithPublicSubnet(ec2Client, request, response);
response.PrivateSubnet = ec2Client.CreateSubnet(new CreateSubnetRequest()
{
AvailabilityZone = request.PrivateSubnetAvailabilityZone ?? response.PublicSubnet.AvailabilityZone,
CidrBlock = request.PrivateSubnetCiderBlock,
VpcId = response.VPC.VpcId
}).Subnet;
WriteProgress(request.ProgressCallback, "Created private subnet {0}", response.PublicSubnet.SubnetId);
WaitTillTrue(((Func <bool>)(() => (ec2Client.DescribeSubnets(new DescribeSubnetsRequest()
{
SubnetIds = new List <string>()
{
response.PrivateSubnet.SubnetId
}
}).Subnets.Count == 1))));
ec2Client.CreateTags(new CreateTagsRequest()
{
Resources = new List <string>()
{
response.PrivateSubnet.SubnetId
},
Tags = new List <Tag>()
{
new Tag()
{
Key = "Name", Value = "Private"
}
}
});
WriteProgress(request.ProgressCallback, "Launching NAT instance");
response.NATInstance = LaunchNATInstance(ec2Client, new LaunchNATInstanceRequest()
{
InstanceType = request.InstanceType,
KeyName = request.KeyName,
SubnetId = response.PublicSubnet.SubnetId
});
WriteProgress(request.ProgressCallback, "NAT instance is available");
var defaultRouteTable = GetDefaultRouteTable(ec2Client, response.VPC.VpcId);
if (defaultRouteTable == null)
{
throw new AmazonEC2Exception("No default route table found for VPC");
}
ec2Client.CreateRoute(new CreateRouteRequest()
{
RouteTableId = defaultRouteTable.RouteTableId,
DestinationCidrBlock = "0.0.0.0/0",
InstanceId = response.NATInstance.InstanceId
});
WriteProgress(request.ProgressCallback, "Added route to the NAT instance in the default route table");
if (request.ConfigureDefaultVPCGroupForNAT)
{
var defaultSecurityGroup = GetDefaultSecurityGroup(ec2Client, response.VPC.VpcId);
var groupId = ec2Client.CreateSecurityGroup(new CreateSecurityGroupRequest()
{
VpcId = response.VPC.VpcId,
GroupName = "NATGroup",
Description = "Give EC2 Instances access through the NAT"
}).GroupId;
WriteProgress(request.ProgressCallback, "Created security group for NAT configuration");
IpPermission spec = new IpPermission
{
IpProtocol = "-1",
IpRanges = new List <string> {
"0.0.0.0/0"
},
UserIdGroupPairs = new List <UserIdGroupPair>()
{
new UserIdGroupPair()
{
GroupId = groupId
}
}
};
ec2Client.AuthorizeSecurityGroupIngress(new AuthorizeSecurityGroupIngressRequest()
{
IpPermissions = new List <IpPermission>()
{
spec
},
GroupId = defaultSecurityGroup.GroupId
});
WriteProgress(request.ProgressCallback, "Added permission to the default security group {0} to allow traffic from security group {1}", defaultSecurityGroup.GroupId, groupId);
response.NATSecurityGroup = ec2Client.DescribeSecurityGroups(new DescribeSecurityGroupsRequest()
{
GroupIds = new List <string>()
{
groupId
}
}).SecurityGroups[0];
}
return(response);
}
/// <summary>
/// This method will create a VPC, a public subnet, private subnet and a NAT EC2 instance to allow EC2 instances in the private
/// subnet to establish outbound connections to the internet.
/// </summary>
/// <param name="ec2Client">The ec2client used to create the VPC</param>
/// <param name="request">The properties used to create the VPC.</param>
/// <returns>The response contains all the VPC objects that were created.</returns>
public static LaunchVPCWithPublicAndPrivateSubnetsResponse LaunchVPCWithPublicAndPrivateSubnets(AmazonEC2 ec2Client, LaunchVPCWithPublicAndPrivateSubnetsRequest request)
{
LaunchVPCWithPublicAndPrivateSubnetsResponse response = new LaunchVPCWithPublicAndPrivateSubnetsResponse();
LaunchVPCWithPublicSubnet(ec2Client, request, response);
response.PrivateSubnet = ec2Client.CreateSubnet(new CreateSubnetRequest()
{
AvailabilityZone = request.PrivateSubnetAvailabilityZone ?? response.PublicSubnet.AvailabilityZone,
CidrBlock = request.PrivateSubnetCiderBlock,
VpcId = response.VPC.VpcId
}).CreateSubnetResult.Subnet;
WriteProgress(request.ProgressCallback, "Created private subnet {0}", response.PublicSubnet.SubnetId);
WaitTillTrue(((Func<bool>)(() => (ec2Client.DescribeSubnets(new DescribeSubnetsRequest(){SubnetId = new List<string>(){response.PrivateSubnet.SubnetId}}).DescribeSubnetsResult.Subnet.Count == 1))));
ec2Client.CreateTags(new CreateTagsRequest()
{
ResourceId = new List<string>() { response.PrivateSubnet.SubnetId },
Tag = new List<Tag>() { new Tag() { Key = "Name", Value = "Private" } }
});
WriteProgress(request.ProgressCallback, "Launching NAT instance");
response.NATInstance = LaunchNATInstance(ec2Client, new LaunchNATInstanceRequest()
{
InstanceType = request.InstanceType,
KeyName = request.KeyName,
SubnetId = response.PublicSubnet.SubnetId
});
WriteProgress(request.ProgressCallback, "NAT instance is available");
var defaultRouteTable = GetDefaultRouteTable(ec2Client, response.VPC.VpcId);
if (defaultRouteTable == null)
throw new AmazonEC2Exception("No default route table found for VPC");
ec2Client.CreateRoute(new CreateRouteRequest()
{
RouteTableId = defaultRouteTable.RouteTableId,
DestinationCidrBlock = "0.0.0.0/0",
InstanceId = response.NATInstance.InstanceId
});
WriteProgress(request.ProgressCallback, "Added route to the NAT instance in the default route table");
if (request.ConfigureDefaultVPCGroupForNAT)
{
var defaultSecurityGroup = GetDefaultSecurityGroup(ec2Client, response.VPC.VpcId);
var groupId = ec2Client.CreateSecurityGroup(new CreateSecurityGroupRequest()
{
VpcId = response.VPC.VpcId,
GroupName = "NATGroup",
GroupDescription = "Give EC2 Instances access through the NAT"
}).CreateSecurityGroupResult.GroupId;
WriteProgress(request.ProgressCallback, "Created security group for NAT configuration");
IpPermissionSpecification spec = new IpPermissionSpecification()
{
IpProtocol = "-1",
IpRanges = new List<string>(){"0.0.0.0/0"},
Groups = new List<UserIdGroupPair>() { new UserIdGroupPair() { GroupId = groupId } }
};
ec2Client.AuthorizeSecurityGroupIngress(new AuthorizeSecurityGroupIngressRequest()
{
IpPermissions = new List<IpPermissionSpecification>(){spec},
GroupId = defaultSecurityGroup.GroupId
});
WriteProgress(request.ProgressCallback, "Added permission to the default security group {0} to allow traffic from security group {1}", defaultSecurityGroup.GroupId, groupId);
response.NATSecurityGroup = ec2Client.DescribeSecurityGroups(new DescribeSecurityGroupsRequest()
{
GroupId = new List<string>(){ groupId }
}).DescribeSecurityGroupsResult.SecurityGroup[0];
}
return response;
}
