demo: Add a flag to automatically apply geo-partitioned replicas.

Work for cockroachdb#39945.

Release note (cli change): Add an option for cockroach demo to
automatically apply the geo-partitioned replicas topology to the movr
dataset.

pkg/ccl/cliccl/demo.go

@@ -46,6 +46,7 @@ func getLicense(clusterID uuid.UUID) (string, error) {
 		return "", err
 	}
 	defer resp.Body.Close()
+
 	if resp.StatusCode != http.StatusOK {
 		return "", errors.New("unable to connect to licensing endpoint")
 	}

pkg/cli/cliflags/flags.go

@@ -918,6 +918,18 @@ to us-east1 and availability zone to 3.
 `,
 	}
 
+	DemoGeoPartitionedReplicas = FlagInfo{
+		Name: "geo-partitioned-replicas",
+		Description: `
+When used with the Movr dataset, reate a 9 node cluster and automatically apply
+the geo-partitioned replicas topology across the regions us-east1, us-west1, and
+europe-west1. This command will fail with an error if an enterprise license could not
+be acquired, or if the Movr dataset is not used.More information about the geo-partitioned 
+replicas topology can be found at this URL: 
+https://www.cockroachlabs.com/docs/v19.1/topology-geo-partitioned-replicas.html
+		`,
+	}
+
 	UseEmptyDatabase = FlagInfo{
 		Name: "empty",
 		Description: `

pkg/cli/context.go

@@ -147,6 +147,7 @@ func initCLIDefaults() {
 	demoCtx.useEmptyDatabase = false
 	demoCtx.runWorkload = false
 	demoCtx.localities = nil
+	demoCtx.geoPartitionedReplicas = false
 
 	initPreFlagsDefaults()
 
@@ -336,8 +337,9 @@ var sqlfmtCtx struct {
 // demoCtx captures the command-line parameters of the `demo` command.
 // Defaults set by InitCLIDefaults() above.
 var demoCtx struct {
-	nodes            int
-	useEmptyDatabase bool
-	runWorkload      bool
-	localities       demoLocalityList
+	nodes                  int
+	useEmptyDatabase       bool
+	runWorkload            bool
+	localities             demoLocalityList
+	geoPartitionedReplicas bool
 }

pkg/cli/demo.go

@@ -49,9 +49,9 @@ subcommands: e.g. "cockroach demo startrek". See --help for a full list.
 By default, the 'movr' dataset is pre-loaded. You can also use --empty
 to avoid pre-loading a dataset.
 
-cockroach demo attempts to connect to a Cockroach Labs server to obtain a 
-temporary enterprise license for demoing enterprise features and enable 
-telemetry back to Cockroach Labs. In order to disable this behavior, set the 
+cockroach demo attempts to connect to a Cockroach Labs server to obtain a
+temporary enterprise license for demoing enterprise features and enable
+telemetry back to Cockroach Labs. In order to disable this behavior, set the
 environment variable "COCKROACH_SKIP_ENABLING_DIAGNOSTIC_REPORTING".
 `,
 	Example: `  cockroach demo`,
@@ -124,6 +124,13 @@ func setupTransientServers(
 		return "", "", cleanup, errors.Errorf("must have a positive number of nodes")
 	}
 
+	// This demo only works on a 9 node cluster, so set the node count as such.
+	// Ignore input user localities.
+	if demoCtx.geoPartitionedReplicas {
+		demoCtx.nodes = 9
+		demoCtx.localities = nil
+	}
+
 	// The user specified some localities for their nodes.
 	if len(demoCtx.localities) != 0 {
 		// Error out of localities don't line up with requested node
@@ -207,6 +214,10 @@ func setupTransientServers(
 	}
 	urlStr := url.String()
 
+	// Communicate information about license acquisition to services
+	// that depend on it.
+	licenseSuccess := make(chan bool, 1)
+
 	// Start up the update check loop.
 	// We don't do this in (*server.Server).Start() because we don't want it
 	// in tests.
@@ -230,8 +241,13 @@ func setupTransientServers(
 					const msg = "Unable to acquire demo license. Enterprise features are not enabled in this session.\n"
 					fmt.Fprint(stderr, msg)
 				}
+				licenseSuccess <- success
 			}()
 		}
+	} else {
+		// If we aren't supposed to check for a license, then automatically
+		// notify failure.
+		licenseSuccess <- false
 	}
 
 	// If there is a load generator, create its database and load its
@@ -253,6 +269,30 @@ func setupTransientServers(
 			return ``, ``, cleanup, err
 		}
 
+		// If we are requested to prepartition our data, and the
+		// specified dataset is Movr, spawn a goroutine to do the partitioning.
+		if demoCtx.geoPartitionedReplicas && gen.Meta().Name == "movr" {
+			go func() {
+				success := <-licenseSuccess
+				// Only try partitioning if license acquisition was successful.
+				if success {
+					db, err := gosql.Open("postgres", urlStr)
+					if err != nil {
+						exitWithError("demo", err)
+					}
+					defer db.Close()
+					if err := setupGeoPartitionedReplicas(db); err != nil {
+						exitWithError("demo", err)
+					}
+				} else {
+					const msg = "license acquisition was unsuccessful. Enterprise features are needed to partition data"
+					exitWithError("demo", errors.New(msg))
+				}
+			}()
+		}
+
+		// TODO (rohany): Should we wait until partitioning is done
+		//  to run the workload?
 		if demoCtx.runWorkload {
 			if err := runWorkload(ctx, gen, urlStr, stopper); err != nil {
 				return ``, ``, cleanup, err
@@ -263,6 +303,108 @@ func setupTransientServers(
 	return urlStr, s.AdminURL(), cleanup, nil
 }
 
+func setupGeoPartitionedReplicas(db *gosql.DB) error {
+	// Create us-west, us-east and europe-west partitions.
+	q := `
+		ALTER TABLE users PARTITION BY LIST (city) (
+			PARTITION us_west VALUES IN ('seattle', 'san francisco', 'los angeles'),
+			PARTITION us_east VALUES IN ('new york', 'boston', 'washington dc'),
+			PARTITION europe_west VALUES IN ('amsterdam', 'paris', 'rome')
+		);
+		ALTER TABLE vehicles PARTITION BY LIST (city) (
+			PARTITION us_west VALUES IN ('seattle', 'san francisco', 'los angeles'),
+			PARTITION us_east VALUES IN ('new york', 'boston', 'washington dc'),
+			PARTITION europe_west VALUES IN ('amsterdam', 'paris', 'rome')
+		);
+		ALTER INDEX vehicles_auto_index_fk_city_ref_users PARTITION BY LIST (city) (
+			PARTITION us_west VALUES IN ('seattle', 'san francisco', 'los angeles'),
+			PARTITION us_east VALUES IN ('new york', 'boston', 'washington dc'),
+			PARTITION europe_west VALUES IN ('amsterdam', 'paris', 'rome')
+		);
+		ALTER TABLE rides PARTITION BY LIST (city) (
+			PARTITION us_west VALUES IN ('seattle', 'san francisco', 'los angeles'),
+			PARTITION us_east VALUES IN ('new york', 'boston', 'washington dc'),
+			PARTITION europe_west VALUES IN ('amsterdam', 'paris', 'rome')
+		);
+		ALTER INDEX rides_auto_index_fk_city_ref_users PARTITION BY LIST (city) (
+			PARTITION us_west VALUES IN ('seattle', 'san francisco', 'los angeles'),
+			PARTITION us_east VALUES IN ('new york', 'boston', 'washington dc'),
+			PARTITION europe_west VALUES IN ('amsterdam', 'paris', 'rome')
+		);
+		ALTER INDEX rides_auto_index_fk_vehicle_city_ref_vehicles PARTITION BY LIST (vehicle_city) (
+			PARTITION us_west VALUES IN ('seattle', 'san francisco', 'los angeles'),
+			PARTITION us_east VALUES IN ('new york', 'boston', 'washington dc'),
+			PARTITION europe_west VALUES IN ('amsterdam', 'paris', 'rome')
+		);
+		ALTER TABLE user_promo_codes PARTITION BY LIST (city) (
+			PARTITION us_west VALUES IN ('seattle', 'san francisco', 'los angeles'),
+			PARTITION us_east VALUES IN ('new york', 'boston', 'washington dc'),
+			PARTITION europe_west VALUES IN ('amsterdam', 'paris', 'rome')
+		);
+		ALTER TABLE vehicle_location_histories PARTITION BY LIST (city) (
+			PARTITION us_west VALUES IN ('seattle', 'san francisco', 'los angeles'),
+			PARTITION us_east VALUES IN ('new york', 'boston', 'washington dc'),
+			PARTITION europe_west VALUES IN ('amsterdam', 'paris', 'rome')
+		);
+	`
+	if _, err := db.Exec(q); err != nil {
+		return err
+	}
+
+	// Alter the partitions to place replicas in the appropriate zones.
+	q = `
+		ALTER PARTITION us_west OF INDEX users@* CONFIGURE ZONE USING CONSTRAINTS='["+region=us-west1"]';
+		ALTER PARTITION us_east OF INDEX users@* CONFIGURE ZONE USING CONSTRAINTS='["+region=us-east1"]';
+		ALTER PARTITION europe_west OF INDEX users@* CONFIGURE ZONE USING CONSTRAINTS='["+region=europe-west1"]';
+
+		ALTER PARTITION us_west OF INDEX vehicles@* CONFIGURE ZONE USING CONSTRAINTS='["+region=us-west1"]';
+		ALTER PARTITION us_east OF INDEX vehicles@* CONFIGURE ZONE USING CONSTRAINTS='["+region=us-east1"]';
+		ALTER PARTITION europe_west OF INDEX vehicles@* CONFIGURE ZONE USING CONSTRAINTS='["+region=europe-west1"]';
+
+		ALTER PARTITION us_west OF INDEX rides@* CONFIGURE ZONE USING CONSTRAINTS='["+region=us-west1"]';
+		ALTER PARTITION us_east OF INDEX rides@* CONFIGURE ZONE USING CONSTRAINTS='["+region=us-east1"]';
+		ALTER PARTITION europe_west OF INDEX rides@* CONFIGURE ZONE USING CONSTRAINTS='["+region=europe-west1"]';
+
+		ALTER PARTITION us_west OF INDEX user_promo_codes@* CONFIGURE ZONE USING CONSTRAINTS='["+region=us-west1"]';
+		ALTER PARTITION us_east OF INDEX user_promo_codes@* CONFIGURE ZONE USING CONSTRAINTS='["+region=us-east1"]';
+		ALTER PARTITION europe_west OF INDEX user_promo_codes@* CONFIGURE ZONE USING CONSTRAINTS='["+region=europe-west1"]';
+
+		ALTER PARTITION us_west OF INDEX vehicle_location_histories@* CONFIGURE ZONE USING CONSTRAINTS='["+region=us-west1"]';
+		ALTER PARTITION us_east OF INDEX vehicle_location_histories@* CONFIGURE ZONE USING CONSTRAINTS='["+region=us-east1"]';
+		ALTER PARTITION europe_west OF INDEX vehicle_location_histories@* CONFIGURE ZONE USING CONSTRAINTS='["+region=europe-west1"]';
+	`
+	if _, err := db.Exec(q); err != nil {
+		return err
+	}
+
+	// Create some duplicate indexes for the promo_codes table.
+	q = `
+		CREATE INDEX promo_codes_idx_us_west ON promo_codes (code) STORING (description, creation_time, expiration_time, rules);
+		CREATE INDEX promo_codes_idx_europe_west ON promo_codes (code) STORING (description, creation_time, expiration_time, rules);
+	`
+	if _, err := db.Exec(q); err != nil {
+		return err
+	}
+
+	// Apply configurations to the index for fast reads.
+	q = `
+		ALTER TABLE promo_codes CONFIGURE ZONE USING num_replicas = 3,
+			constraints = '{"+region=us-east1": 1}',
+			lease_preferences = '[[+region=us-east1]]';
+		ALTER INDEX promo_codes@promo_codes_idx_us_west CONFIGURE ZONE USING
+			constraints = '{"+region=us-west1": 1}',
+			lease_preferences = '[[+region=us-west1]]';
+		ALTER INDEX promo_codes@promo_codes_idx_europe_west CONFIGURE ZONE USING
+			constraints = '{"+region=europe-west1": 1}',
+			lease_preferences = '[[+region=europe-west1]]';
+	`
+	if _, err := db.Exec(q); err != nil {
+		return err
+	}
+
+	return nil
+}
+
 func runWorkload(
 	ctx context.Context, gen workload.Generator, dbURL string, stopper *stop.Stopper,
 ) error {
@@ -319,6 +461,16 @@ func runDemo(cmd *cobra.Command, gen workload.Generator) error {
 		return errors.New("cannot run a workload against an empty database")
 	}
 
+	// Make sure that the user didn't request to have a topology and an empty database.
+	if demoCtx.geoPartitionedReplicas && demoCtx.useEmptyDatabase {
+		return errors.New("cannot setup geo-partitioned replicas topology on an empty database")
+	}
+
+	// Make sure that the Movr database is selected when automatically partitioning.
+	if demoCtx.geoPartitionedReplicas && (gen == nil || gen.Meta().Name != "movr") {
+		return errors.New("geo-partitioned replicas must be used with the Movr dataset")
+	}
+
 	connURL, adminURL, cleanup, err := setupTransientServers(cmd, gen)
 	defer cleanup()
 	if err != nil {

pkg/cli/flags.go

@@ -588,6 +588,7 @@ func init() {
 	// so we use the regular flag set.
 	BoolFlag(demoCmd.Flags(), &demoCtx.useEmptyDatabase, cliflags.UseEmptyDatabase, false)
 	BoolFlag(demoCmd.Flags(), &demoCtx.runWorkload, cliflags.RunDemoWorkload, false)
+	BoolFlag(demoCmd.Flags(), &demoCtx.geoPartitionedReplicas, cliflags.DemoGeoPartitionedReplicas, false)
 	VarFlag(demoFlags, &demoCtx.localities, cliflags.DemoNodeLocality)
 
 	// sqlfmt command.

pkg/workload/movr/movr.go

@@ -112,9 +112,6 @@ var cities = []struct {
 	{city: "seattle", locality: "us_west"},
 	{city: "san francisco", locality: "us_west"},
 	{city: "los angeles", locality: "us_west"},
-	{city: "chicago", locality: "us_central"},
-	{city: "detroit", locality: "us_central"},
-	{city: "minneapolis", locality: "us_central"},
 	{city: "amsterdam", locality: "eu_west"},
 	{city: "paris", locality: "eu_west"},
 	{city: "rome", locality: "eu_west"},