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initial meta stream move, pending fleshing out of server apis #521

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initial meta stream move, pending fleshing out of server apis #521

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49 changes: 48 additions & 1 deletion cli/server_raft_command.go
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Expand Up @@ -17,6 +17,7 @@ import (
"encoding/json"
"fmt"
"os"
"strings"
"time"

"github.com/choria-io/fisk"
Expand All @@ -29,12 +30,17 @@ type SrvRaftCmd struct {
force bool
peer string
placementCluster string

moveServer string
moveAccount string
moveStream string
moveTags []string
}

func configureServerRaftCommand(srv *fisk.CmdClause) {
c := &SrvRaftCmd{}

raft := srv.Command("raft", "Manage JetStream Clustering").Alias("r")
raft := srv.Command("raft", "Manage JetStream Clustering").Alias("r").Alias("jetstream")
raft.Flag("json", "Produce JSON output").Short('j').UnNegatableBoolVar(&c.json)

sd := raft.Command("step-down", "Force a new leader election by standing down the current meta leader").Alias("stepdown").Alias("sd").Alias("elect").Alias("down").Alias("d").Action(c.metaLeaderStandDown)
Expand All @@ -43,6 +49,47 @@ func configureServerRaftCommand(srv *fisk.CmdClause) {
rm := raft.Command("peer-remove", "Removes a server from a JetStream cluster").Alias("rm").Alias("pr").Action(c.metaPeerRemove)
rm.Arg("name", "The Server Name to remove from the JetStream cluster").StringVar(&c.peer)
rm.Flag("force", "Force removal without prompting").Short('f').UnNegatableBoolVar(&c.force)

move := raft.Command("stream-move", "Moves a stream between servers").Hidden().Action(c.metaStreamMove)
move.Arg("server", "The name of the server to move the stream from").StringVar(&c.moveServer)
move.Arg("account", "The account the stream belong to").StringVar(&c.moveAccount)
move.Arg("stream", "The stream to move").StringVar(&c.moveStream)
move.Flag("tags", "Placement tags to use when deciding the new location for the stream").StringsVar(&c.moveTags)
}

func (c *SrvRaftCmd) metaStreamMove(_ *fisk.ParseContext) error {
nc, mgr, err := prepareHelper("", natsOpts()...)
if err != nil {
return err
}

res, err := doReq(server.JSzOptions{LeaderOnly: true}, "$SYS.REQ.SERVER.PING.JSZ", 1, nc)
if err != nil {
return err
}

if len(res) != 1 {
return fmt.Errorf("did not receive a response from the meta leader, ensure the account used has system privileges and appropriate permissions")
}

if len(c.moveTags) == 0 {
fmt.Printf("Moving %s > %s from %s\n", c.moveAccount, c.moveStream, c.moveServer)
} else {
fmt.Printf("Moving %s > %s from %s using placement tags %s\n", c.moveAccount, c.moveStream, c.moveServer, strings.Join(c.moveTags, ", "))
}

resp, err := mgr.MetaServerStreamMove(&api.JSApiMetaServerStreamMoveRequest{
Server: c.moveServer,
Account: c.moveAccount,
Stream: c.moveStream,
Tags: c.moveTags,
})
if err != nil {
return err
}

fmt.Printf("%#v\n", resp)
return nil
}

func (c *SrvRaftCmd) metaPeerRemove(_ *fisk.ParseContext) error {
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4 changes: 2 additions & 2 deletions go.mod
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Expand Up @@ -15,8 +15,8 @@ require (
github.com/guptarohit/asciigraph v0.5.5
github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51
github.com/klauspost/compress v1.15.7
github.com/nats-io/jsm.go v0.0.34-0.20220624081812-70883a58262d
github.com/nats-io/nats-server/v2 v2.8.5-0.20220629014533-b0580cdfc297
github.com/nats-io/jsm.go v0.0.34-0.20220701100907-3739476a382f
github.com/nats-io/nats-server/v2 v2.8.5-0.20220630223440-b7d94e1b5211
github.com/nats-io/nats.go v1.16.1-0.20220610202224-dcbb65a13ee9
github.com/nats-io/nuid v1.0.1
github.com/prometheus/client_golang v1.12.2
Expand Down
12 changes: 6 additions & 6 deletions go.sum
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Expand Up @@ -205,14 +205,14 @@ github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3Rllmb
github.com/modern-go/reflect2 v1.0.2/go.mod h1:yWuevngMOJpCy52FWWMvUC8ws7m/LJsjYzDa0/r8luk=
github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
github.com/nats-io/jsm.go v0.0.34-0.20220624081812-70883a58262d h1:JX28FB+sJPXxjKqAWw7xIXg1Tlhg5cxFQ7eQFD6pwXY=
github.com/nats-io/jsm.go v0.0.34-0.20220624081812-70883a58262d/go.mod h1:D++29QW9omjSpsq5gjrIPwZQiupi4cb3eq7zSPjJ2Cg=
github.com/nats-io/jwt/v2 v2.2.1-0.20220330180145-442af02fd36a/go.mod h1:0tqz9Hlu6bCBFLWAASKhE5vUA4c24L9KPUUgvwumE/k=
github.com/nats-io/jsm.go v0.0.34-0.20220701094016-c245a42e1221 h1:kxxSBBeDNTvBKiJbZgpw7RQX1WZ8Qshkcr8qq+TDPuQ=
github.com/nats-io/jsm.go v0.0.34-0.20220701094016-c245a42e1221/go.mod h1:QGmPROy+VAkQ2y170WYZDVbz/PmoZduVhOaopVX7PjQ=
github.com/nats-io/jsm.go v0.0.34-0.20220701100907-3739476a382f h1:kkPiBgHvvyIq0Le9vPC/n0qHLnByZv9u2Q9EHiHBGwc=
github.com/nats-io/jsm.go v0.0.34-0.20220701100907-3739476a382f/go.mod h1:QGmPROy+VAkQ2y170WYZDVbz/PmoZduVhOaopVX7PjQ=
github.com/nats-io/jwt/v2 v2.3.0 h1:z2mA1a7tIf5ShggOFlR1oBPgd6hGqcDYsISxZByUzdI=
github.com/nats-io/jwt/v2 v2.3.0/go.mod h1:0tqz9Hlu6bCBFLWAASKhE5vUA4c24L9KPUUgvwumE/k=
github.com/nats-io/nats-server/v2 v2.8.5-0.20220603052622-d836076443f5/go.mod h1:lZPG1sK+0r7tR7Q89EcpiuJnqF8y1PtYNC5Cz69RPko=
github.com/nats-io/nats-server/v2 v2.8.5-0.20220629014533-b0580cdfc297 h1:aTCxMfooHOM3pnjQPN5bfRJ4NZczmdmQL0Zft5Oq7NI=
github.com/nats-io/nats-server/v2 v2.8.5-0.20220629014533-b0580cdfc297/go.mod h1:qiP3Ix8tErhcbkuzM7khoLXB+EWy9Zpl1IJPivFk37s=
github.com/nats-io/nats-server/v2 v2.8.5-0.20220630223440-b7d94e1b5211 h1:x35AjlxVvVbF+iBe7DKtq/l/6wJGgxRew2YkOW4kkA0=
github.com/nats-io/nats-server/v2 v2.8.5-0.20220630223440-b7d94e1b5211/go.mod h1:DDSswj1ITPghvnFXGoj+aP13Zq5vTX40YJaqtiEYYkQ=
github.com/nats-io/nats.go v1.16.0/go.mod h1:BPko4oXsySz4aSWeFgOHLZs3G4Jq4ZAyE6/zMCxRT6w=
github.com/nats-io/nats.go v1.16.1-0.20220610202224-dcbb65a13ee9 h1:gHTW4UDAOW6j9SA2DLE7aZg7cxVixYzLyestoU0ukyA=
github.com/nats-io/nats.go v1.16.1-0.20220610202224-dcbb65a13ee9/go.mod h1:BPko4oXsySz4aSWeFgOHLZs3G4Jq4ZAyE6/zMCxRT6w=
Expand Down