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https://issues.apache.org/jira/browse/JCLOUDS-1542?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17146545#comment-17146545
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ASF subversion and git services commented on JCLOUDS-1542:
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Commit 238c97507816606a0aeca2fafd7a3196bfb7f1dc in jclouds's branch
refs/heads/master from Jean-Noël Rouvignac
[ https://gitbox.apache.org/repos/asf?p=jclouds.git;h=238c975 ]
JCLOUDS-1542 Java 11 warns of illegal reflective access (#76)
With Java 11, an illegal reflective access is output for the google cloud
storage blobstore.
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.jclouds.reflect.Reflection2$1
(file:/.../jclouds-core.jar) to constructor
java.lang.String(char[],int,int,java.lang.Void)
WARNING: Please consider reporting this to the maintainers of
org.jclouds.reflect.Reflection2$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal
reflective access operations
WARNING: All illegal access operations will be denied in a future release
Indeed, JClouds calls `setAccessible(true)` on the package protected constructor
`java.lang.String(char[],int,int,java.lang.Void)`.
Investigating the code, it turns out it is looking for constructors annotated
with any of:
* java.beans.ConstructorProperties
* org.jclouds.json.SerializedNames
* com.google.inject.Inject
But `String` being defined in `java.base` module, it is impossible
that it will be annotated with any of these annotation.
This commit is complementary to JClouds commit
db4e4af931ef19f582b85f02efb93e50f1c5d01c .
Reflection2.java:
Do not call `setAccessible(true)` on core java constructors and methods.
For reference, here is the stacktrace of this illegal access warning:
java.lang.String.(String.java:3208)
java.lang.String.(String.java:251)
java.util.StringJoiner.compactElts(StringJoiner.java:250)
java.util.StringJoiner.toString(StringJoiner.java:173)
jdk.internal.module.IllegalAccessLogger.loudWarning(IllegalAccessLogger.java:339)
jdk.internal.module.IllegalAccessLogger.log(IllegalAccessLogger.java:288)
jdk.internal.module.IllegalAccessLogger.log(IllegalAccessLogger.java:261)
jdk.internal.module.IllegalAccessLogger.logIfOpenedForIllegalAccess(IllegalAccessLogger.java:226)
java.lang.reflect.AccessibleObject.logIfOpenedForIllegalAccess(AccessibleObject.java:366)
java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:325)
java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:280)
java.lang.reflect.Constructor.checkCanSetAccessible(Constructor.java:189)
java.lang.reflect.Constructor.setAccessible(Constructor.java:182)
org.jclouds.reflect.Reflection2$1.load(Reflection2$1.java:157)
org.jclouds.reflect.Reflection2$1.load(Reflection2$1.java:153)
com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache$LoadingValueReference.java:3529)
com.google.common.cache.LocalCache$Segment.loadSync(LocalCache$Segment.java:2278)
com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache$Segment.java:2155)
com.google.common.cache.LocalCache$Segment.get(LocalCache$Segment.java:2045)
com.google.common.cache.LocalCache.get(LocalCache.java:3953)
com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:3976)
com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache$LocalLoadingCache.java:4960)
org.jclouds.reflect.Reflection2.get(Reflection2.java:346)
org.jclouds.reflect.Reflection2.constructors(Reflection2.java:100)
org.jclouds.json.internal.NamingStrategies$AnnotationConstructorNamingStrategy.getDeserializer(NamingStrategies$AnnotationConstructorNamingStrategy.java:271)
org.jclouds.json.internal.DeserializationConstructorAndReflectiveTypeAdapterFactory.create(DeserializationConstructorAndReflectiveTypeAdapterFactory.java:125)
com.google.gson.Gson.getAdapter(Gson.java:458)
org.jclouds.json.gson.internal.bind.ReflectiveTypeAdapterFactory.createBoundField(ReflectiveTypeAdapterFactory.java:117)
org.jclouds.json.gson.internal.bind.ReflectiveTypeAdapterFactory.getBoundFields(ReflectiveTypeAdapterFactory.java:166)
org.jclouds.json.gson.internal.bind.ReflectiveTypeAdapterFactory.create(ReflectiveTypeAdapterFactory.java:102)
com.google.gson.Gson.getAdapter(Gson.java:458)
com.google.gson.Gson.toJson(Gson.java:696)
com.google.gson.Gson.toJson(Gson.java:683)
com.google.gson.Gson.toJson(Gson.java:638)
com.google.gson.Gson.toJson(Gson.java:618)
org.jclouds.json.internal.GsonWrapper.toJson(GsonWrapper.java:65)
org.jclouds.oauth.v2.functions.ClaimsToAssertion.apply(ClaimsToAssertion.java:59)
org.jclouds.oauth.v2.functions.ClaimsToAssertion.apply(ClaimsToAssertion.java:43)
