clover's git

the-knife

1	import type { RelayManagedEndpoint } from "@t3tools/contracts/relay";
2	import * as Schema from "effect/Schema";
3
4	const DNS_LABEL_MAX_LENGTH = 63;
5	const MANAGED_ENDPOINT_HASH_LENGTH = 16;
6	const MANAGED_ENDPOINT_TUNNEL_PREFIX = "t3coderelay-managedendpoint";
7	export const MANAGED_ENDPOINT_ZONE_OWNER_STAGE = "prod";
8
9	export class RelayPublicDomainLabelTooLongError extends Schema.TaggedError<RelayPublicDomainLabelTooLongError>()(
10	"RelayPublicDomainLabelTooLongError",
11	{
12	stage: Schema.String,
13	label: Schema.String,
14	maxLength: Schema.Number,
15	},
16	) {
17	override get message(): string {
18	return `Relay stage '${this.stage}' produces custom domain label '${this.label}' (${this.label.length} characters), exceeding the DNS label limit of ${this.maxLength}.`;
19	}
20	}
21
22	function normalizeZoneName(zoneName: string): string {
23	return zoneName
24	.trim()
25	.toLowerCase()
26	.replace(/^\.+|\.+$/g, "");
27	}
28
29	function isDnsName(name: string): boolean {
30	return (
31	name.length > 0 &&
32	name.length <= 253 &&
33	name
34	.split(".")
35	.every(
36	(label) =>
37	label.length > 0 &&
38	label.length <= DNS_LABEL_MAX_LENGTH &&
39	/^[a-z0-9](?:[a-z0-9-]*[a-z0-9])?$/u.test(label),
40	)
41	);
42	}
43
44	function stableSuffix(hash: string): string {
45	return hash.toLowerCase().slice(0, MANAGED_ENDPOINT_HASH_LENGTH);
46	}
47
48	function appendDnsSafeSuffix(prefix: string, suffix: string): string {
49	const truncatedPrefix = prefix
50	.slice(0, DNS_LABEL_MAX_LENGTH - suffix.length - 1)
51	.replace(/-+$/g, "");
52	return `${truncatedPrefix}-${suffix}`;
53	}
54
55	/**
56	* Alchemy's physical-name helper sanitizes resource names after adding the
57	* stage. Keep custom domains and runtime-created resources aligned with it.
58	*/
59	function relayStageSlug(stage: string): string {
60	return stage
61	.toLowerCase()
62	.replaceAll(/[^a-z0-9-]/g, "-")
63	.replaceAll(/-+/g, "-")
64	.replace(/^-+|-+$/g, "");
65	}
66
67	export function relayResourceNameForStage(name: string, stage: string): string {
68	return `${name}-${relayStageSlug(stage)}`;
69	}
70
71	export function relayOwnsManagedEndpointZone(stage: string): boolean {
72	return stage === MANAGED_ENDPOINT_ZONE_OWNER_STAGE;
73	}
74
75	export function relayPublicDomainForStage(stage: string, zoneName: string): string {
76	const stageSlug = relayStageSlug(stage);
77	const relayLabel = stage === "prod" ? "relay" : `relay-${stageSlug}`;
78	if (relayLabel.length > DNS_LABEL_MAX_LENGTH) {
79	throw new RelayPublicDomainLabelTooLongError({
80	stage,
81	label: relayLabel,
82	maxLength: DNS_LABEL_MAX_LENGTH,
83	});
84	}
85	return `${relayLabel}.${normalizeZoneName(zoneName)}`;
86	}
87
88	export function managedEndpointDigestInput(
89	stage: string,
90	userId: string,
91	environmentId: string,
92	): string {
93	return `${stage}:${userId}:${environmentId}`;
94	}
95
96	export function managedEndpointHostname(stage: string, baseDomain: string, hash: string): string {
97	const label = appendDnsSafeSuffix(relayStageSlug(stage), stableSuffix(hash));
98	return `${label}.${normalizeZoneName(baseDomain)}`;
99	}
100
101	export function isManagedEndpointHostname(hostname: string, baseDomain: string): boolean {
102	const normalizedHostname = normalizeZoneName(hostname);
103	const normalizedBaseDomain = normalizeZoneName(baseDomain);
104	return (
105	hostname === normalizedHostname &&
106	isDnsName(normalizedHostname) &&
107	isDnsName(normalizedBaseDomain) &&
108	normalizedHostname.endsWith(`.${normalizedBaseDomain}`)
109	);
110	}
111
112	export function managedEndpointForHostname(hostname: string): RelayManagedEndpoint {
113	return {
114	httpBaseUrl: `https://${hostname}/`,
115	wsBaseUrl: `wss://${hostname}/ws`,
116	providerKind: "cloudflare_tunnel",
117	};
118	}
119
120	export function managedEndpointTunnelNamePrefix(stage: string): string {
121	return `${MANAGED_ENDPOINT_TUNNEL_PREFIX}-${relayStageSlug(stage)}-`;
122	}
123
124	export function managedEndpointTunnelName(stage: string, hash: string): string {
125	return `${managedEndpointTunnelNamePrefix(stage)}${stableSuffix(hash)}`;
126	}
127
128	/**
129	* A managed endpoint's public key in webhook URLs: the hash suffix its tunnel
130	* name ends with. The hash covers user and environment, so one key names
131	* exactly one link, unlike the environment id, which any account can claim.
132	*/
133	export const MANAGED_ENDPOINT_KEY_PATTERN = new RegExp(
134	`^[0-9a-f]{${MANAGED_ENDPOINT_HASH_LENGTH}}$`,
135	);
136
137	export function managedEndpointTunnelNameForKey(stage: string, endpointKey: string): string {
138	return `${managedEndpointTunnelNamePrefix(stage)}${endpointKey}`;
139	}