[HADOOP-14784] [KMS] Improve KeyAuthorizationKeyProvider#toString()

• Type: Improvement
• Status: Resolved
• Priority: Trivial
• Resolution: Fixed
• Fix Version/s: 3.3.0
• Labels: newbie
• Assignee: Yeliang Cang
• Reporter: Wei-Chiu Chuang
• Created: 18/Aug/17 00:04
• Updated: 02/Oct/19 17:13
• Resolved: 19/Aug/19 18:12

Description

When KMS server starts, it loads KeyProviderCryptoExtension and print the following message:

2017-08-17 04:57:13,348 INFO org.apache.hadoop.crypto.key.kms.server.KMSWebApp: Initialized KeyProviderCryptoExtension EagerKeyGeneratorKeyProviderCryptoExtension: KeyProviderCryptoExtension: CachingKeyProvider: jceks://file@/var/lib/kms/kms.keystore

However, this is confusing as KeyAuthorizationKeyProvider is loaded by not shown in this message. KeyAuthorizationKeyProvider#toString should be improved, so that in addition to its internal provider, also print its own class name when loaded.