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feat(config): load LND TLS cert from file with env fallback #200

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Merged
Danswar merged 3 commits into from
Jun 10, 2026
Merged

feat(config): load LND TLS cert from file with env fallback #200

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c959468
feat(config): load LND TLS cert from file with env fallback
Danswar Jun 9, 2026
7167dc2
Use named readFileSync import in config to match repo convention
Danswar Jun 10, 2026
f06a9ef
Read LND cert from file only, drop env-var fallback
Danswar Jun 10, 2026
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14 changes: 13 additions & 1 deletion src/config/config.ts
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Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
import { Injectable, Optional } from '@nestjs/common';
import { TypeOrmModuleOptions } from '@nestjs/typeorm';
import { readFileSync } from 'fs';

export enum Process {
SYNC_ONCHAIN_TRANSACTIONS = 'SyncOnchainTransactions',
Expand All @@ -22,6 +23,17 @@ export function GetConfig(): Configuration {
return new Configuration();
}

// Reads the live LND TLS certificate from the file pointed to by LIGHTNING_API_CERTIFICATE_PATH.
// If the path is unset, returns undefined (environments without Lightning, e.g. tests, still boot).
// If the path is set but the file is missing/unreadable, readFileSync throws so a broken mount
// surfaces immediately instead of being masked by a stale fallback.
function readCert(): string | undefined {
const path = process.env.LIGHTNING_API_CERTIFICATE_PATH;
if (!path) return undefined;

return readFileSync(path, 'utf8');
}

export class Configuration {
port = process.env.PORT ?? 3000;
environment: Environment = process.env.ENVIRONMENT as Environment;
Expand Down Expand Up @@ -117,7 +129,7 @@ export class Configuration {
wsInvoicesUrl: process.env.LIGHTNING_LND_WS_INVOICES_URL ?? '',
wsPaymentsUrl: process.env.LIGHTNING_LND_WS_PAYMENTS_URL ?? '',
},
certificate: process.env.LIGHTNING_API_CERTIFICATE?.split('<br>').join('\n'),
certificate: readCert(),
lnbitsapi: {
apiUrl: process.env.LIGHTNING_LNBITSAPI_API_URL ?? '',
certificate: process.env.LIGHTNING_LNBITSAPI_CERTIFICATE?.split('<br>').join('\n') ?? '',
Expand Down
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