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Add GCP (Google Cloud Platform) mode support #33

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9 changes: 9 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -48,6 +48,15 @@ should align to these tenets, or propose an adjustment to the tenets.
- Azure Reserved - DNS Mapping
- Broadcast Address (last network address)

### GCP mode ([docs](https://cloud.google.com/vpc/docs/subnets#unusable-ip-addresses-in-every-subnet)):

- Smallest subnet: /29
- Four reserved addresses per subnet:
- Network Address (network + 0)
- GCP Reserved - Default Gateway (network + 1)
- GCP Reserved - Future Use (second-to-last address)
- Broadcast Address (last network address)

### OCI mode ([docs](https://docs.oracle.com/en-us/iaas/Content/Network/Concepts/overview.htm#Reserved__reserved_subnet)):

- Smallest subnet: /30
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1 change: 1 addition & 0 deletions dist/index.html
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Expand Up @@ -107,6 +107,7 @@ <h1>Visual Subnet Calculator</h1>
<li><a class="dropdown-item active" href="#" data-bs-toggle="operatingMode" data-bs-target="#operatingMode" id="dropdown_standard" aria-current="true">Mode - Standard</a></li>
<li><a class="dropdown-item" href="#" data-bs-toggle="operatingMode" data-bs-target="#operatingMode" id="dropdown_aws">Mode - AWS</a></li>
<li><a class="dropdown-item" href="#" data-bs-toggle="operatingMode" data-bs-target="#operatingMode" id="dropdown_azure">Mode - Azure</a></li>
<li><a class="dropdown-item" href="#" data-bs-toggle="operatingMode" data-bs-target="#operatingMode" id="dropdown_gcp">Mode - GCP</a></li>
<li><a class="dropdown-item" href="#" data-bs-toggle="operatingMode" data-bs-target="#operatingMode" id="dropdown_oci">Mode - OCI</a></li>
<li><hr class="dropdown-divider"></li>
<li><a class="dropdown-item" href="#" data-bs-toggle="modal" data-bs-target="#importExportModal" id="btn_import_export">Import / Export</a></li>
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49 changes: 44 additions & 5 deletions dist/js/main.js
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Expand Up @@ -29,6 +29,13 @@ let infoColumnCount = 5
// - Net+0 = Network Address
// - Net+1 = OCI Reserved - Default Gateway Address
// - Last = Broadcast Address
// GCP mode:
// - Smallest subnet: /29
// - Four reserved addresses per subnet:
// - Net+0 = Network Address
// - Net+1 = GCP Reserved - Default Gateway
// - Net+Last-1 = GCP Reserved - Future Use
// - Last = Broadcast Address
let noteTimeout;
let operatingMode = 'Standard'
let previousOperatingMode = 'Standard'
Expand All @@ -40,13 +47,15 @@ const netsizePatterns = {
Standard: '^([12]?[0-9]|3[0-2])$',
AZURE: '^([12]?[0-9])$',
AWS: '^(1?[0-9]|2[0-8])$',
GCP: '^([12]?[0-9])$',
OCI: '^([12]?[0-9]|30)$',
};

const minSubnetSizes = {
Standard: 32,
AZURE: 29,
AWS: 28,
GCP: 29,
OCI: 30,
};

Expand Down Expand Up @@ -131,6 +140,16 @@ $('#dropdown_aws').click(function() {
}
});

$('#dropdown_gcp').click(function() {
previousOperatingMode = operatingMode;
operatingMode = 'GCP';

if(!switchMode(operatingMode)) {
operatingMode = previousOperatingMode;
$('#dropdown_'+ operatingMode.toLowerCase()).addClass('active');
}
});

$('#dropdown_oci').click(function() {
previousOperatingMode = operatingMode;
operatingMode = 'OCI';
Expand Down Expand Up @@ -279,7 +298,7 @@ function addRow(network, netSize, colspan, note, notesWidth, color, operatingMod
let addressFirst = ip2int(network)
let addressLast = subnet_last_address(addressFirst, netSize)
let usableFirst = subnet_usable_first(addressFirst, netSize, operatingMode)
let usableLast = subnet_usable_last(addressFirst, netSize)
let usableLast = subnet_usable_last(addressFirst, netSize, operatingMode)
let hostCount = 1 + usableLast - usableFirst
let styleTag = ''
if (color !== '') {
Expand Down Expand Up @@ -432,14 +451,17 @@ function subnet_usable_first(network, netSize, operatingMode) {
// AWS reserves 3 additional IPs
// https://learn.microsoft.com/en-us/azure/virtual-network/virtual-networks-faq#are-there-any-restrictions-on-using-ip-addresses-within-these-subnets
// Azure reserves 3 additional IPs
// https://cloud.google.com/vpc/docs/subnets
// GCP reserves 2 additional IPs at the start
// https://docs.oracle.com/en-us/iaas/Content/Network/Concepts/overview.htm#Reserved__reserved_subnet
// OCI reserves 2 additional IPs
// OCI reserves 1 additional IP
//return network + (operatingMode == 'Standard' ? 1 : 4);
switch (operatingMode) {
case 'AWS':
case 'AZURE':
return network + 4;
break;
case 'GCP':
case 'OCI':
return network + 2;
break;
Expand All @@ -452,10 +474,15 @@ function subnet_usable_first(network, netSize, operatingMode) {
}
}

function subnet_usable_last(network, netSize) {
function subnet_usable_last(network, netSize, operatingMode) {
let last_address = subnet_last_address(network, netSize);
if (netSize < 31) {
return last_address - 1;
// GCP reserves the last 2 addresses (second-to-last and broadcast)
if (operatingMode === 'GCP') {
return last_address - 2;
} else {
return last_address - 1;
}
} else {
return last_address;
}
Expand Down Expand Up @@ -618,6 +645,9 @@ function mutate_subnet_map(verb, network, subnetTree, propValue = '') {
case 'AZURE':
var modal_error_message = 'The minimum IPv4 subnet size for Azure is /' + minSubnetSizes[operatingMode] + '.<br/><br/>More Information:<br/><a href="https://learn.microsoft.com/en-us/azure/virtual-network/virtual-networks-faq#how-small-and-how-large-can-virtual-networks-and-subnets-be" target="_blank" rel="noopener noreferrer">Azure Virtual Network FAQ > How small and how large can virtual networks and subnets be?</a>'
break;
case 'GCP':
var modal_error_message = 'The minimum IPv4 subnet size for GCP is /' + minSubnetSizes[operatingMode] + '.<br/><br/>More Information:<br/><a href="https://cloud.google.com/vpc/docs/subnets#unusable-ip-addresses-in-every-subnet" target="_blank" rel="noopener noreferrer">Google Cloud VPC > Subnets > Unusable addresses in IPv4 subnet ranges</a>'
break;
case 'OCI':
var modal_error_message = 'The minimum IPv4 subnet size for OCI is /' + minSubnetSizes[operatingMode] + '.<br/><br/>More Information:<br/><a href="https://docs.oracle.com/en-us/iaas/Content/Network/Concepts/overview.htm#Reserved__reserved_subnet" target="_blank" rel="noopener noreferrer">Infrastructure Services>Networking>Networking Overview>Three IP Addresses in Each Subnet</a>'
break;
Expand Down Expand Up @@ -669,6 +699,9 @@ function switchMode(operatingMode) {
case 'AZURE':
var validate_error_message = 'Azure Mode - Smallest size is /' + minSubnetSizes[operatingMode]
break;
case 'GCP':
var validate_error_message = 'GCP Mode - Smallest size is /' + minSubnetSizes[operatingMode]
break;
case 'OCI':
var validate_error_message = 'OCI Mode - Smallest size is /' + minSubnetSizes[operatingMode]
break;
Expand All @@ -688,7 +721,7 @@ function switchMode(operatingMode) {
}
});
// Remove active class from all buttons if needed
$('#dropdown_standard, #dropdown_azure, #dropdown_aws, #dropdown_oci').removeClass('active');
$('#dropdown_standard, #dropdown_azure, #dropdown_aws, #dropdown_gcp, #dropdown_oci').removeClass('active');
$('#dropdown_' + operatingMode.toLowerCase()).addClass('active');
isSwitched = true;
} else {
Expand All @@ -699,6 +732,9 @@ function switchMode(operatingMode) {
case 'AZURE':
var modal_error_message = 'One or more subnets are smaller than the minimum allowed for Azure.<br/>The smallest size allowed is /' + minSubnetSizes[operatingMode] + '.<br/>See: <a href="https://learn.microsoft.com/en-us/azure/virtual-network/virtual-networks-faq#how-small-and-how-large-can-virtual-networks-and-subnets-be" target="_blank" rel="noopener noreferrer">Azure Virtual Network FAQ > How small and how large can virtual networks and subnets be?</a>'
break;
case 'GCP':
var modal_error_message = 'One or more subnets are smaller than the minimum allowed for GCP.<br/>The smallest size allowed is /' + minSubnetSizes[operatingMode] + '.<br/>See: <a href="https://cloud.google.com/vpc/docs/subnets#unusable-ip-addresses-in-every-subnet" target="_blank" rel="noopener noreferrer">Google Cloud VPC > Subnets > Unusable addresses in IPv4 subnet ranges</a>'
break;
case 'OCI':
var modal_error_message = 'One or more subnets are smaller than the minimum allowed for OCI.<br/>The smallest size allowed is /' + minSubnetSizes[operatingMode] + '.<br/>See: <a href="https://docs.oracle.com/en-us/iaas/Content/Network/Concepts/overview.htm#Reserved__reserved_subnet" target="_blank" rel="noopener noreferrer">Infrastructure Services>Networking>Networking Overview>Three IP Addresses in Each Subnet</a>'
break;
Expand Down Expand Up @@ -747,6 +783,9 @@ function set_usable_ips_title(operatingMode) {
case 'AZURE':
$('#useableHeader').html('Usable IPs (<a href="https://learn.microsoft.com/en-us/azure/virtual-network/virtual-networks-faq#are-there-any-restrictions-on-using-ip-addresses-within-these-subnets" target="_blank" rel="noopener noreferrer" style="color:#000; border-bottom: 1px dotted #000; text-decoration: dotted" data-bs-toggle="tooltip" data-bs-placement="top" data-bs-html="true" title="Azure reserves 5 addresses in each subnet for platform use.<br/>Click to navigate to the Azure documentation.">Azure</a>)')
break;
case 'GCP':
$('#useableHeader').html('Usable IPs (<a href="https://cloud.google.com/vpc/docs/subnets#unusable-ip-addresses-in-every-subnet" target="_blank" rel="noopener noreferrer" style="color:#000; border-bottom: 1px dotted #000; text-decoration: dotted" data-bs-toggle="tooltip" data-bs-placement="top" data-bs-html="true" title="GCP reserves 4 addresses in each subnet for platform use.<br/>Click to navigate to the GCP documentation.">GCP</a>)')
break;
case 'OCI':
$('#useableHeader').html('Usable IPs (<a href="https://docs.oracle.com/en-us/iaas/Content/Network/Concepts/overview.htm#Reserved__reserved_subnet" target="_blank" rel="noopener noreferrer" style="color:#000; border-bottom: 1px dotted #000; text-decoration: dotted" data-bs-toggle="tooltip" data-bs-placement="top" data-bs-html="true" title="OCI reserves 3 addresses in each subnet for platform use.<br/>Click to navigate to the OCI documentation.">OCI</a>)')
break;
Expand Down