chore: VCAP_SERVICES_FILE_PATH compatibility

lib/metrics/index.js

@@ -27,6 +27,8 @@ function _getExporter() {
     credentials
   } = cds.env.requires.telemetry
 
+  cds.log('otel-debug').debug('Configured credentials: ', credentials)
+
   // for kind telemetry-to-otlp based on env vars
   if (metricsExporter === 'env') {
     const cstm_env = getEnvWithoutDefaults()
@@ -48,6 +50,8 @@ function _getExporter() {
     throw new Error(`Unknown metrics exporter "${metricsExporter.class}" in module "${metricsExporter.module}"`)
   const config = { ...(metricsExporter.config || {}) }
 
+  cds.log('otel-debug').debug('Metrics exporter kind:', kind)
+
   if (kind.match(/to-dynatrace$/)) {
     if (!credentials) credentials = getCredsForDTAsUPS()
     if (!credentials) throw new Error('No Dynatrace credentials found.')
@@ -63,6 +67,8 @@ function _getExporter() {
   }
 
   if (kind.match(/to-cloud-logging$/)) {
+    cds.log('otel-debug').debug('Getting credentials?', !!credentials)
+
     if (!credentials) credentials = getCredsForCLSAsUPS()
     if (!credentials) throw new Error('No SAP Cloud Logging credentials found.')
     augmentCLCreds(credentials)

lib/utils.js

@@ -40,6 +40,8 @@ function getResource() {
     LOG._info && LOG.info('Unable to require package.json to resolve app name and version due to error:', err)
   }
 
+  // TODO: If we let PKG.name override the VCAP_APPLICATION.name
+  // TODO: We end up with my-app, while the name in the standarad deployment is my-app-srv
   const name = PKG?.name || VCAP_APPLICATION?.name || 'CAP Application'
   const version = PKG?.version || VCAP_APPLICATION?.application_version || '1.0.0'
 
@@ -116,6 +118,9 @@ function getCredsForCLSAsUPS() {
   const vcap = JSON.parse(process.env.VCAP_SERVICES)
   let ups
 
+  cds.log('otel-debug').debug('Trying to find credentials for Cloud Logging in VCAP SERVICES')
+  cds.log('otel-debug').debug('VCAP SERVICES:', JSON.stringify(vcap, null, 2))
+
   // to support connection via user-provided services, the instance must have either tag "cloud-logging" or "Cloud Logging"
   ups = vcap['user-provided']?.find(e => e.tags.includes('cloud-logging') || e.tags.includes('Cloud Logging'))
   if (ups) return ups.credentials