| // Copyright 2024 The Bazel Authors. All rights reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package com.google.devtools.build.lib.authandtls.credentialhelper; |
| |
| import com.github.benmanes.caffeine.cache.Expiry; |
| import com.google.common.base.Preconditions; |
| import com.google.errorprone.annotations.CanIgnoreReturnValue; |
| import java.net.URI; |
| import java.time.Duration; |
| import java.time.Instant; |
| |
| final class CredentialCacheExpiry implements Expiry<URI, GetCredentialsResponse> { |
| private Duration defaultCacheDuration = Duration.ZERO; |
| |
| /** |
| * Sets the default cache duration for {@link GetCredentialsResponse}s that don't set {@code |
| * expiry}. |
| */ |
| public void setDefaultCacheDuration(Duration duration) { |
| this.defaultCacheDuration = Preconditions.checkNotNull(duration); |
| } |
| |
| private Duration getExpirationTime(GetCredentialsResponse response) { |
| Preconditions.checkNotNull(response); |
| |
| var expires = response.getExpires(); |
| if (expires.isEmpty()) { |
| return defaultCacheDuration; |
| } |
| |
| var now = Instant.now(); |
| return Duration.between(expires.get(), now); |
| } |
| |
| @Override |
| public long expireAfterCreate(URI uri, GetCredentialsResponse response, long currentTime) { |
| Preconditions.checkNotNull(uri); |
| Preconditions.checkNotNull(response); |
| |
| return getExpirationTime(response).toNanos(); |
| } |
| |
| @Override |
| public long expireAfterUpdate( |
| URI uri, GetCredentialsResponse response, long currentTime, long currentDuration) { |
| Preconditions.checkNotNull(uri); |
| Preconditions.checkNotNull(response); |
| |
| return getExpirationTime(response).toNanos(); |
| } |
| |
| @CanIgnoreReturnValue |
| @Override |
| public long expireAfterRead( |
| URI uri, GetCredentialsResponse response, long currentTime, long currentDuration) { |
| Preconditions.checkNotNull(uri); |
| Preconditions.checkNotNull(response); |
| |
| // We don't extend the duration on access. |
| return currentDuration; |
| } |
| } |