org.apache.samza.table.descriptors.TableProvider java code examples

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}

/**
 * Shutdown the table manager, internally it shuts down all tables
 */
public void close() {
 tableContexts.values().forEach(ctx -> ctx.tableProvider.close());
}

 /**
  * Get a table instance
  * @param tableId Id of the table
  * @return table instance
  */
 public Table getTable(String tableId) {
  Preconditions.checkState(initialized, "TableManager has not been initialized.");

  TableCtx ctx = tableContexts.get(tableId);
  Preconditions.checkNotNull(ctx, "Unknown tableId " + tableId);

  if (ctx.table == null) {
   ctx.table = ctx.tableProvider.getTable();
  }
  return ctx.table;
 }
}

/**
 * Initialize table providers with container and task contexts
 * @param context context for the task
 */
public void init(Context context) {
 tableContexts.values().forEach(ctx -> ctx.tableProvider.init(context));
 initialized = true;
}

/**
 * Generate table configurations given a list of table specs
 * @param config the job configuration
 * @param tableSpecs the list of tableSpecs
 * @return configuration for the tables
 */
static public Map<String, String> generateConfigsForTableSpecs(Config config, List<TableSpec> tableSpecs) {
 Map<String, String> tableConfigs = new HashMap<>();
 tableSpecs.forEach(tableSpec -> {
   // Add table provider factory config
   tableConfigs.put(String.format(JavaTableConfig.TABLE_PROVIDER_FACTORY, tableSpec.getId()),
     tableSpec.getTableProviderFactoryClassName());
   // Generate additional configuration
   TableProviderFactory tableProviderFactory =
     Util.getObj(tableSpec.getTableProviderFactoryClassName(), TableProviderFactory.class);
   TableProvider tableProvider = tableProviderFactory.getTableProvider(tableSpec);
   tableConfigs.putAll(tableProvider.generateConfig(config, tableConfigs));
  });
 LOG.info("TableConfigGenerator has generated configs {}", tableConfigs);
 return tableConfigs;
}

/**
 * Generate table configurations given a list of table specs
 * @param config the job configuration
 * @param tableSpecs the list of tableSpecs
 * @return configuration for the tables
 */
static public Map<String, String> generateConfigsForTableSpecs(Config config, List<TableSpec> tableSpecs) {
 Map<String, String> tableConfigs = new HashMap<>();
 tableSpecs.forEach(tableSpec -> {
   // Add table provider factory config
   tableConfigs.put(String.format(JavaTableConfig.TABLE_PROVIDER_FACTORY, tableSpec.getId()),
     tableSpec.getTableProviderFactoryClassName());
   // Generate additional configuration
   TableProviderFactory tableProviderFactory =
     Util.getObj(tableSpec.getTableProviderFactoryClassName(), TableProviderFactory.class);
   TableProvider tableProvider = tableProviderFactory.getTableProvider(tableSpec);
   tableConfigs.putAll(tableProvider.generateConfig(config, tableConfigs));
  });
 LOG.info("TableConfigGenerator has generated configs {}", tableConfigs);
 return tableConfigs;
}

/**
 * Shutdown the table manager, internally it shuts down all tables
 */
public void close() {
 tableContexts.values().forEach(ctx -> ctx.tableProvider.close());
}

/**
 * Initialize table providers with container and task contexts
 * @param context context for the task
 */
public void init(Context context) {
 tableContexts.values().forEach(ctx -> ctx.tableProvider.init(context));
 initialized = true;
}

 /**
  * Get a table instance
  * @param tableId Id of the table
  * @return table instance
  */
 public Table getTable(String tableId) {
  Preconditions.checkState(initialized, "TableManager has not been initialized.");

  TableCtx ctx = tableContexts.get(tableId);
  Preconditions.checkNotNull(ctx, "Unknown tableId " + tableId);

  if (ctx.table == null) {
   ctx.table = ctx.tableProvider.getTable();
  }
  return ctx.table;
 }
}

/**
 * Generate table configurations given a list of table specs
 * @param config the job configuration
 * @param tableSpecs the list of tableSpecs
 * @return configuration for the tables
 */
static public Map<String, String> generateConfigsForTableSpecs(Config config, List<TableSpec> tableSpecs) {
 Map<String, String> tableConfigs = new HashMap<>();
 tableSpecs.forEach(tableSpec -> {
   // Add table provider factory config
   tableConfigs.put(String.format(JavaTableConfig.TABLE_PROVIDER_FACTORY, tableSpec.getId()),
     tableSpec.getTableProviderFactoryClassName());
   // Generate additional configuration
   TableProviderFactory tableProviderFactory =
     Util.getObj(tableSpec.getTableProviderFactoryClassName(), TableProviderFactory.class);
   TableProvider tableProvider = tableProviderFactory.getTableProvider(tableSpec);
   tableConfigs.putAll(tableProvider.generateConfig(config, tableConfigs));
  });
 LOG.info("TableConfigGenerator has generated configs {}", tableConfigs);
 return tableConfigs;
}

/**
 * Shutdown the table manager, internally it shuts down all tables
 */
public void close() {
 tableContexts.values().forEach(ctx -> ctx.tableProvider.close());
}

/**
 * Initialize table providers with container and task contexts
 * @param context context for the task
 */
public void init(Context context) {
 tableContexts.values().forEach(ctx -> ctx.tableProvider.init(context));
 initialized = true;
}

 /**
  * Get a table instance
  * @param tableId Id of the table
  * @return table instance
  */
 public Table getTable(String tableId) {
  Preconditions.checkState(initialized, "TableManager has not been initialized.");

  TableCtx ctx = tableContexts.get(tableId);
  Preconditions.checkNotNull(ctx, "Unknown tableId " + tableId);

  if (ctx.table == null) {
   ctx.table = ctx.tableProvider.getTable();
  }
  return ctx.table;
 }
}

/**
 * Generate table configurations given a list of table specs
 * @param config the job configuration
 * @param tableSpecs the list of tableSpecs
 * @return configuration for the tables
 */
static public Map<String, String> generateConfigsForTableSpecs(Config config, List<TableSpec> tableSpecs) {
 Map<String, String> tableConfigs = new HashMap<>();
 tableSpecs.forEach(tableSpec -> {
   // Add table provider factory config
   tableConfigs.put(String.format(JavaTableConfig.TABLE_PROVIDER_FACTORY, tableSpec.getId()),
     tableSpec.getTableProviderFactoryClassName());
   // Generate additional configuration
   TableProviderFactory tableProviderFactory =
     Util.getObj(tableSpec.getTableProviderFactoryClassName(), TableProviderFactory.class);
   TableProvider tableProvider = tableProviderFactory.getTableProvider(tableSpec);
   tableConfigs.putAll(tableProvider.generateConfig(config, tableConfigs));
  });
 LOG.info("TableConfigGenerator has generated configs {}", tableConfigs);
 return tableConfigs;
}

/**
 * Shutdown the table manager, internally it shuts down all tables
 */
public void close() {
 tableContexts.values().forEach(ctx -> ctx.tableProvider.close());
}

/**
 * Initialize table providers with container and task contexts
 * @param context context for the task
 */
public void init(Context context) {
 tableContexts.values().forEach(ctx -> ctx.tableProvider.init(context));
 initialized = true;
}

 /**
  * Get a table instance
  * @param tableId Id of the table
  * @return table instance
  */
 public Table getTable(String tableId) {
  Preconditions.checkState(initialized, "TableManager has not been initialized.");

  TableCtx ctx = tableContexts.get(tableId);
  Preconditions.checkNotNull(ctx, "Unknown tableId " + tableId);

  if (ctx.table == null) {
   ctx.table = ctx.tableProvider.getTable();
  }
  return ctx.table;
 }
}

Javadoc

A table provider provides the implementation for a table. It ensures a table is properly constructed and also manages its lifecycle.

Most used methods

close
Shutdown the underlying table
generateConfig
Generate any configuration for this table, the generated configuration is used by Samza container to
getTable
Get an instance of the table for read/write operations
init
Initialize TableProvider with container and task context

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How to useTableProvider in org.apache.samza.table.descriptors

Best Java code snippets using org.apache.samza.table.descriptors.TableProvider (Showing top 16 results out of 315)

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TableProvider
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org.apache.samza.table.descriptors