@Override
public AbstractGroupScan getPhysicalScan(JSONOptions selection) throws IOException {
FormatSelection formatSelection = selection.getWith(context.getConfig(), FormatSelection.class);
FormatPlugin plugin;
if (formatSelection.getFormat() instanceof NamedFormatPluginConfig) {
plugin = formatsByName.get(((NamedFormatPluginConfig) formatSelection.getFormat()).name);
} else {
plugin = formatPluginsByConfig.get(formatSelection.getFormat());
}
if (plugin == null)
throw new IOException(
String.format(
"Failure getting requested format plugin named '%s'. It was not one of the format plugins registered.",
formatSelection.getFormat()));
return plugin.getGroupScan(formatSelection.getSelection());
}
public FileSystemPlugin(FileSystemConfig config, DrillbitContext context, String name)
throws ExecutionSetupException {
try {
this.config = config;
this.context = context;
Configuration fsConf = new Configuration();
fsConf.set(FileSystem.FS_DEFAULT_NAME_KEY, config.connection);
fsConf.set("fs.classpath.impl", ClassPathFileSystem.class.getName());
fsConf.set("fs.drill-local.impl", LocalSyncableFileSystem.class.getName());
this.fs = FileSystemCreator.getFileSystem(context.getConfig(), fsConf);
this.formatsByName = FormatCreator.getFormatPlugins(context, fs, config);
List<FormatMatcher> matchers = Lists.newArrayList();
formatPluginsByConfig = Maps.newHashMap();
for (FormatPlugin p : formatsByName.values()) {
matchers.add(p.getMatcher());
formatPluginsByConfig.put(p.getConfig(), p);
}
List<WorkspaceSchemaFactory> factories = null;
if (config.workspaces == null || config.workspaces.isEmpty()) {
factories =
Collections.singletonList(
new WorkspaceSchemaFactory(this, "default", name, fs, "/", matchers));
} else {
factories = Lists.newArrayList();
for (Map.Entry<String, String> space : config.workspaces.entrySet()) {
factories.add(
new WorkspaceSchemaFactory(
this, space.getKey(), name, fs, space.getValue(), matchers));
}
}
this.schemaFactory = new FileSystemSchemaFactory(name, factories);
} catch (IOException e) {
throw new ExecutionSetupException("Failure setting up file system plugin.", e);
}
}
@Override
public InfoSchemaGroupScan getPhysicalScan(JSONOptions selection) throws IOException {
SelectedTable table = selection.getWith(context.getConfig(), SelectedTable.class);
return new InfoSchemaGroupScan(table);
}
public DrillConfig getConfig() {
return drillbitContext.getConfig();
}