38879fb3ff
Purges Server, MasterServices, and RegionServerServices from CoprocessorEnvironments. Replaces removed functionality with a set of carefully curated methods on the *CoprocessorEnvironment implementations (Varies by CoprocessorEnvironment in that the MasterCoprocessorEnvironment has Master-type facility exposed, and so on). A few core Coprocessors that should long ago have been converted to be integral, violate their context; e.g. a RegionCoprocessor wants free access to a hosting RegionServer (which may or may not be present). Rather than let these violators make us corrupte the CP API, instead, we've made up a hacky system that allows core Coprocessors access to internals. A new CoreCoprocessor Annotation has been introduced. When loading Coprocessors, if the instance is annotated CoreCoprocessor, we pass it an Environment that has been padded w/ extra-stuff. On invocation, CoreCoprocessors know how to route their way to these extras in their environment. See the *CoprocessoHost for how the do the check for CoreCoprocessor and pass a fatter *Coprocessor, one that allows getting of either a RegionServerService or MasterService out of the environment via Marker Interfaces. Removed org.apache.hadoop.hbase.regionserver.CoprocessorRegionServerServices M hbase-endpoint/src/main/java/org/apache/hadoop/hbase/security/access/SecureBulkLoadEndpoint.java This Endpoint has been deprecated because its functionality has been moved to core. Marking it a CoreCoprocessor in the meantime to minimize change. M hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdminEndpoint.java This should be integral to hbase. Meantime, marking it CoreCoprocessor. M hbase-server/src/main/java/org/apache/hadoop/hbase/Server.java Added doc on where it is used and added back a few methods we'd removed. A hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/CoreCoprocessor.java New annotation for core hbase coprocessors. They get richer environment on coprocessor loading. A hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/HasMasterServices.java A hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/HasRegionServerServices.java Marker Interface to access extras if present. M hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/MasterCoprocessorEnvironment.java Purge MasterServices access. Allow CPs a Connection. M hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/RegionCoprocessorEnvironment.java Purge RegionServerServices access. Allow CPs a Connection. M hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/RegionServerCoprocessorEnvironment.java Purge MasterServices access. Allow CPs a Connection. M hbase-server/src/main/java/org/apache/hadoop/hbase/quotas/MasterSpaceQuotaObserver.java M hbase-server/src/main/java/org/apache/hadoop/hbase/quotas/QuotaCache.java We no longer have access to MasterServices. Don't need it actually. Use short-circuiting Admin instead. D hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/CoprocessorRegionServerServices.java Removed. Not needed now we do CP Env differently. M hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java No need to go via RSS to getOnlineTables; just use HRS. And so on. Adds tests to ensure we can only get at extra info if the CP has been properly marked. |
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README.txt
ON PROTOBUFS
This maven module has protobuf definition files ('.protos') used by hbase
Coprocessor Endpoints that ship with hbase core including tests. Coprocessor
Endpoints are meant to be standalone, independent code not reliant on hbase
internals. They define their Service using protobuf. The protobuf version
they use can be distinct from that used by HBase internally since HBase started
shading its protobuf references. Endpoints have no access to the shaded protobuf
hbase uses. They do have access to the content of hbase-protocol -- the
.protos found in here -- but avoid using as much of this as you can as it is
liable to change.
Generation of java files from protobuf .proto files included here is done as
part of the build.