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51 lines
1.5 KiB
C++
51 lines
1.5 KiB
C++
#pragma once
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#include <Access/Common/AccessRightsElement.h>
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#include <QueryPipeline/BlockIO.h>
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#include <Processors/ISource.h>
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#include <Interpreters/Context_fwd.h>
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#include <Parsers/IAST_fwd.h>
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#include <Common/ZooKeeper/ZooKeeperRetries.h>
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namespace zkutil
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{
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class ZooKeeper;
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}
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namespace DB
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{
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struct DDLLogEntry;
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class Cluster;
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using ClusterPtr = std::shared_ptr<Cluster>;
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/// Returns true if provided ALTER type can be executed ON CLUSTER
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bool isSupportedAlterTypeForOnClusterDDLQuery(int type);
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struct DDLQueryOnClusterParams
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{
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/// A cluster to execute a distributed query.
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/// If not set, executeDDLQueryOnCluster() will use `query->cluster` to determine a cluster to execute the query.
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ClusterPtr cluster;
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/// 1-bases index of a shard to execute a query on, 0 means all shards.
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size_t only_shard_num = 0;
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/// 1-bases index of a replica to execute a query on, 0 means all replicas.
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size_t only_replica_num = 0;
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/// Privileges which the current user should have to execute a query.
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AccessRightsElements access_to_check;
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};
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/// Pushes distributed DDL query to the queue.
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/// Returns DDLQueryStatusSource, which reads results of query execution on each host in the cluster.
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BlockIO executeDDLQueryOnCluster(const ASTPtr & query_ptr, ContextPtr context, const DDLQueryOnClusterParams & params = {});
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BlockIO getDistributedDDLStatus(const String & node_path, const DDLLogEntry & entry, ContextPtr context, const Strings * hosts_to_wait);
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bool maybeRemoveOnCluster(const ASTPtr & query_ptr, ContextPtr context);
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}
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