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Migrate Materialize command to vtctldclient (vitessio#14184)
Signed-off-by: Matt Lord <[email protected]>
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189 changes: 189 additions & 0 deletions
189
go/cmd/vtctldclient/command/vreplication/materialize/create.go
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/* | ||
Copyright 2023 The Vitess Authors. | ||
Licensed under the Apache License, Version 2.0 (the "License"); | ||
you may not use this file except in compliance with the License. | ||
You may obtain a copy of the License at | ||
http://www.apache.org/licenses/LICENSE-2.0 | ||
Unless required by applicable law or agreed to in writing, software | ||
distributed under the License is distributed on an "AS IS" BASIS, | ||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
See the License for the specific language governing permissions and | ||
limitations under the License. | ||
*/ | ||
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package materialize | ||
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import ( | ||
"encoding/json" | ||
"fmt" | ||
"strings" | ||
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"github.com/spf13/cobra" | ||
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"vitess.io/vitess/go/cmd/vtctldclient/cli" | ||
"vitess.io/vitess/go/cmd/vtctldclient/command/vreplication/common" | ||
"vitess.io/vitess/go/vt/sqlparser" | ||
"vitess.io/vitess/go/vt/topo/topoproto" | ||
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vtctldatapb "vitess.io/vitess/go/vt/proto/vtctldata" | ||
) | ||
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var ( | ||
createOptions = struct { | ||
SourceKeyspace string | ||
TableSettings tableSettings | ||
}{} | ||
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// create makes a MaterializeCreate gRPC call to a vtctld. | ||
create = &cobra.Command{ | ||
Use: "create", | ||
Short: "Create and run a Materialize VReplication workflow.", | ||
Example: `vtctldclient --server localhost:15999 materialize --workflow product_sales --target-keyspace commerce create --source-keyspace commerce --table-settings '[{"target_table": "sales_by_sku", "create_ddl": "create table sales_by_sku (sku varbinary(128) not null primary key, orders bigint, revenue bigint)", "source_expression": "select sku, count(*) as orders, sum(price) as revenue from corder group by sku"}]' --cells zone1 --cells zone2 --tablet-types replica`, | ||
Long: `Materialize is a lower level VReplication command that allows for generalized materialization | ||
of tables. The target tables can be copies, aggregations, or views. The target tables are kept | ||
in sync in near-realtime. The primary flag used to define the materializations (you can have | ||
multiple per workflow) is table-settings which is a JSON array where each value must contain | ||
two key/value pairs. The first required key is 'target_table' and it is the name of the table | ||
in the target-keyspace to store the results in. The second required key is 'source_expression' | ||
and its value is the select query to run against the source table. An optional key/value pair | ||
can also be specified for 'create_ddl' which provides the DDL to create the target table if it | ||
does not exist -- you can alternatively specify a value of 'copy' if the target table schema | ||
should be copied as-is from the source keyspace. Here's an example value for table-settings: | ||
[ | ||
{ | ||
"target_table": "customer_one_email", | ||
"source_expression": "select email from customer where customer_id = 1" | ||
}, | ||
{ | ||
"target_table": "states", | ||
"source_expression": "select * from states", | ||
"create_ddl": "copy" | ||
}, | ||
{ | ||
"target_table": "sales_by_sku", | ||
"source_expression": "select sku, count(*) as orders, sum(price) as revenue from corder group by sku", | ||
"create_ddl": "create table sales_by_sku (sku varbinary(128) not null primary key, orders bigint, revenue bigint)" | ||
} | ||
] | ||
`, | ||
SilenceUsage: true, | ||
DisableFlagsInUseLine: true, | ||
Aliases: []string{"Create"}, | ||
Args: cobra.NoArgs, | ||
PreRunE: func(cmd *cobra.Command, args []string) error { | ||
if err := common.ParseAndValidateCreateOptions(cmd); err != nil { | ||
return err | ||
} | ||
return nil | ||
}, | ||
RunE: commandCreate, | ||
} | ||
) | ||
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func commandCreate(cmd *cobra.Command, args []string) error { | ||
format, err := common.GetOutputFormat(cmd) | ||
if err != nil { | ||
return err | ||
} | ||
tsp := common.GetTabletSelectionPreference(cmd) | ||
cli.FinishedParsing(cmd) | ||
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ms := &vtctldatapb.MaterializeSettings{ | ||
Workflow: common.BaseOptions.Workflow, | ||
TargetKeyspace: common.BaseOptions.TargetKeyspace, | ||
SourceKeyspace: createOptions.SourceKeyspace, | ||
TableSettings: createOptions.TableSettings.val, | ||
StopAfterCopy: common.CreateOptions.StopAfterCopy, | ||
Cell: strings.Join(common.CreateOptions.Cells, ","), | ||
TabletTypes: topoproto.MakeStringTypeCSV(common.CreateOptions.TabletTypes), | ||
TabletSelectionPreference: tsp, | ||
} | ||
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req := &vtctldatapb.MaterializeCreateRequest{ | ||
Settings: ms, | ||
} | ||
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_, err = common.GetClient().MaterializeCreate(common.GetCommandCtx(), req) | ||
if err != nil { | ||
return err | ||
} | ||
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if format == "json" { | ||
resp := struct { | ||
Action string | ||
Status string | ||
}{ | ||
Action: "create", | ||
Status: "success", | ||
} | ||
jsonText, _ := cli.MarshalJSONPretty(resp) | ||
fmt.Println(string(jsonText)) | ||
} else { | ||
fmt.Printf("Materialization workflow %s successfully created in the %s keyspace. Use show to view the status.\n", | ||
common.BaseOptions.Workflow, common.BaseOptions.TargetKeyspace) | ||
} | ||
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return nil | ||
} | ||
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// tableSettings is a wrapper around a slice of TableMaterializeSettings | ||
// proto messages that implements the pflag.Value interface. | ||
type tableSettings struct { | ||
val []*vtctldatapb.TableMaterializeSettings | ||
} | ||
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func (ts *tableSettings) String() string { | ||
tsj, _ := json.Marshal(ts.val) | ||
return string(tsj) | ||
} | ||
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func (ts *tableSettings) Set(v string) error { | ||
ts.val = make([]*vtctldatapb.TableMaterializeSettings, 0) | ||
err := json.Unmarshal([]byte(v), &ts.val) | ||
if err != nil { | ||
return fmt.Errorf("table-settings is not valid JSON") | ||
} | ||
if len(ts.val) == 0 { | ||
return fmt.Errorf("empty table-settings") | ||
} | ||
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// Validate the provided queries. | ||
seenSourceTables := make(map[string]bool) | ||
for _, tms := range ts.val { | ||
if tms.TargetTable == "" || tms.SourceExpression == "" { | ||
return fmt.Errorf("missing target_table or source_expression") | ||
} | ||
// Validate that the query is valid. | ||
stmt, err := sqlparser.Parse(tms.SourceExpression) | ||
if err != nil { | ||
return fmt.Errorf("invalid source_expression: %q", tms.SourceExpression) | ||
} | ||
// Validate that each source-expression uses a different table. | ||
// If any of them query the same table the materialize workflow | ||
// will fail. | ||
err = sqlparser.Walk(func(node sqlparser.SQLNode) (kontinue bool, err error) { | ||
switch node := node.(type) { | ||
case sqlparser.TableName: | ||
if !node.Name.IsEmpty() { | ||
if seenSourceTables[node.Name.String()] { | ||
return false, fmt.Errorf("multiple source_expression queries use the same table: %q", node.Name.String()) | ||
} | ||
seenSourceTables[node.Name.String()] = true | ||
} | ||
} | ||
return true, nil | ||
}, stmt) | ||
if err != nil { | ||
return err | ||
} | ||
} | ||
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return nil | ||
} | ||
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func (ts *tableSettings) Type() string { | ||
return "JSON" | ||
} |
64 changes: 64 additions & 0 deletions
64
go/cmd/vtctldclient/command/vreplication/materialize/materialize.go
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/* | ||
Copyright 2023 The Vitess Authors. | ||
Licensed under the Apache License, Version 2.0 (the "License"); | ||
you may not use this file except in compliance with the License. | ||
You may obtain a copy of the License at | ||
http://www.apache.org/licenses/LICENSE-2.0 | ||
Unless required by applicable law or agreed to in writing, software | ||
distributed under the License is distributed on an "AS IS" BASIS, | ||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
See the License for the specific language governing permissions and | ||
limitations under the License. | ||
*/ | ||
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package materialize | ||
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import ( | ||
"github.com/spf13/cobra" | ||
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"vitess.io/vitess/go/cmd/vtctldclient/command/vreplication/common" | ||
"vitess.io/vitess/go/vt/topo/topoproto" | ||
) | ||
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var ( | ||
// base is the base command for all actions related to Materialize. | ||
base = &cobra.Command{ | ||
Use: "Materialize --workflow <workflow> --target-keyspace <keyspace> [command] [command-flags]", | ||
Short: "Perform commands related to materializing query results from the source keyspace into tables in the target keyspace.", | ||
DisableFlagsInUseLine: true, | ||
Aliases: []string{"materialize"}, | ||
Args: cobra.ExactArgs(1), | ||
} | ||
) | ||
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func registerCommands(root *cobra.Command) { | ||
common.AddCommonFlags(base) | ||
root.AddCommand(base) | ||
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create.Flags().StringSliceVarP(&common.CreateOptions.Cells, "cells", "c", nil, "Cells and/or CellAliases to copy table data from.") | ||
create.Flags().Var((*topoproto.TabletTypeListFlag)(&common.CreateOptions.TabletTypes), "tablet-types", "Source tablet types to replicate table data from (e.g. PRIMARY,REPLICA,RDONLY).") | ||
create.Flags().BoolVar(&common.CreateOptions.TabletTypesInPreferenceOrder, "tablet-types-in-preference-order", true, "When performing source tablet selection, look for candidates in the type order as they are listed in the tablet-types flag.") | ||
create.Flags().StringVar(&createOptions.SourceKeyspace, "source-keyspace", "", "Keyspace where the tables queried in the 'source_expression' values within table-settings live.") | ||
create.MarkFlagRequired("source-keyspace") | ||
create.Flags().Var(&createOptions.TableSettings, "table-settings", "A JSON array defining what tables to materialize using what select statements. See the --help output for more details.") | ||
create.MarkFlagRequired("table-settings") | ||
create.Flags().BoolVar(&common.CreateOptions.StopAfterCopy, "stop-after-copy", false, "Stop the workflow after it's finished copying the existing rows and before it starts replicating changes.") | ||
base.AddCommand(create) | ||
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// Generic workflow commands. | ||
opts := &common.SubCommandsOpts{ | ||
SubCommand: "Materialize", | ||
Workflow: "product_sales", | ||
} | ||
base.AddCommand(common.GetCancelCommand(opts)) | ||
base.AddCommand(common.GetShowCommand(opts)) | ||
base.AddCommand(common.GetStartCommand(opts)) | ||
base.AddCommand(common.GetStopCommand(opts)) | ||
} | ||
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func init() { | ||
common.RegisterCommandHandler("Materialize", registerCommands) | ||
} |
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