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update: check all possible env variables when determining blob connection is configured #47

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6bd9520
update: check all possible env variables when determining blob connec…
Oliver-CI Oct 14, 2025
aa34583
update: changelog
Oliver-CI Oct 14, 2025
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1 change: 1 addition & 0 deletions CHANGELOG.md
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,7 @@

### Updates
* Updated the BrokerProtocol type for Kafka Extension.
* Add check for all connection env variables to configure managed identity

### Breaking changes
* to be update
22 changes: 20 additions & 2 deletions ...sdktypes/src/main/java/com/microsoft/azure/functions/sdktype/blob/BlobClientHydrator.java
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Expand Up @@ -25,7 +25,7 @@ public Object createInstance(BlobClientMetaData metaData) throws Exception {
String envVar = metaData.getConnectionEnvVar();
String configValue = System.getenv(envVar);

if (configValue == null || configValue.isEmpty()) {
if (!environmentVariablesArePresent(envVar)) {
throw new SdkHydrationException("No environment variable set for: " + envVar);
}

Expand All @@ -35,7 +35,7 @@ public Object createInstance(BlobClientMetaData metaData) throws Exception {
Object blobBuilder = blobBuilderClass.getDeclaredConstructor().newInstance();

// Step 2: If configValue is a connection string, do the existing approach
if (isConnectionString(configValue)) {
if (configValue != null && isConnectionString(configValue)) {
LOGGER.info("Detected connection string usage from: " + envVar);

Method conn = blobBuilderClass.getMethod("connectionString", String.class);
Expand Down Expand Up @@ -87,6 +87,24 @@ public Object createInstance(BlobClientMetaData metaData) throws Exception {
return blobClient;
}

private boolean environmentVariablesArePresent(String envVar){
final String configValue = System.getenv(envVar);
final String accountName = System.getenv(envVar + "__accountName");
final String blobServiceUri = System.getenv(envVar + "__blobServiceUri");
final String serviceUri = System.getenv(envVar + "__serviceUri");

if(configValue != null && !configValue.isEmpty()){
return true;
}
if( (accountName != null && !accountName.isEmpty()) ||
(blobServiceUri != null && !blobServiceUri.isEmpty()) ||
(serviceUri != null && !serviceUri.isEmpty())
){
return true;
}
return false;
}

/**
* Decide if configValue is likely a connection string by checking for well-known keywords.
*/
Expand Down