org.apache.drill.exec.store

Class TestPluginRegistry

java.lang.Object

org.apache.drill.test.BaseTest

org.apache.drill.exec.store.TestPluginRegistry

public class TestPluginRegistry
extends BaseTest

Tests the storage plugin registry. Plugins are (at present) tightly coupled to the Drillbit context so we need to start a Drillbit per tests to ensure each test works from a clean, known registry.

Tests are somewhat large because each needs a running Drillbit. This is several big tests because of the setup cost of starting the Drillbits in the needed config.

Field Summary

Fields

Modifier and Type	Field and Description
static BaseDirTestWatcher	dirTestWatcher

Constructor Summary

Constructors

Constructor and Description
TestPluginRegistry()

Method Summary

Modifier and Type	Method and Description
void	cleanup()
void	testBadPlugin() Test to illustrate problems discussed in DRILL-7624
void	testEnabledState() Tests the dedicated setEnabled() method to cleanly update the enabled status of a plugin by name.
void	testEnableWithPut() Tests the other way to enable/disabled plugins: make a **COPY** of the config and set the enable/disable status.
void	testEphemeralLifecycle() Test the ephemeral cache where plugin instances live after their configs are changed or disabled so that any running queries see the prior plugin config an instance.
void	testEphemeralWithoutInstance()
void	testFormatPlugin()
void	testLifecycle()
void	testStoreSync()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

dirTestWatcher

public static final BaseDirTestWatcher dirTestWatcher

Constructor Detail

TestPluginRegistry

public TestPluginRegistry()

Method Detail

cleanup

public void cleanup()
             throws Exception

Throws:

Exception

testLifecycle

public void testLifecycle()
                   throws Exception

Throws:

Exception

testEnabledState

public void testEnabledState()
                      throws Exception

Tests the dedicated setEnabled() method to cleanly update the enabled status of a plugin by name.

Throws:

Exception

testEnableWithPut

public void testEnableWithPut()
                       throws Exception

Tests the other way to enable/disabled plugins: make a **COPY** of the config and set the enable/disable status. Note: race conditions happen if a client modifies a stored config. Old code would do that, but the results are undefined. Either use setEnabled(), or make a copy of the config. This case also models where the user edits the config by hand in the Web Console to disable the plugin: the deserialize/serialize steps make the copy.

Throws:

Exception

testEphemeralLifecycle

public void testEphemeralLifecycle()
                            throws Exception

Test the ephemeral cache where plugin instances live after their configs are changed or disabled so that any running queries see the prior plugin config an instance.

Note that each call to update a plugin must work with a copy of a config. Results are undefined if a client changes a stored config.

Throws:

Exception

testEphemeralWithoutInstance

public void testEphemeralWithoutInstance()
                                  throws Exception

Throws:

Exception

testStoreSync

public void testStoreSync()
                   throws Exception

Throws:

Exception

testFormatPlugin

public void testFormatPlugin()
                      throws Exception

Throws:

Exception

testBadPlugin

public void testBadPlugin()
                   throws Exception

Test to illustrate problems discussed in DRILL-7624

Throws:

Exception