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client.go
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client.go
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package scyllaclient
import (
"context"
"sort"
"github.com/scylladb/go-log"
"github.com/scylladb/go-set/strset"
"github.com/scylladb/mermaid/scyllaclient"
scyllaOperations "github.com/scylladb/scylla-operator/pkg/scyllaclient/internal/scylla/client/operations"
)
type Client struct {
scyllaOps *scyllaOperations.Client
}
func createClient(logger log.Logger, host, token string) (*scyllaclient.Client, error) {
config := scyllaclient.DefaultConfig()
config.Hosts = []string{host}
config.AuthToken = token
return scyllaclient.NewClient(config, logger.Named("client"))
}
// HostDatacenter looks up the datacenter that the given host belongs to.
func (c *Client) HostDatacenter(ctx context.Context, host string) (dc string, err error) {
resp, err := c.scyllaOps.SnitchDatacenterGet(&scyllaOperations.SnitchDatacenterGetParams{
Context: ctx,
Host: &host,
})
if err != nil {
return "", err
}
dc = resp.Payload
return
}
func (c *Client) Status(ctx context.Context) (NodeStatusInfoSlice, error) {
// Get all hosts
resp, err := c.scyllaOps.StorageServiceHostIDGet(&scyllaOperations.StorageServiceHostIDGetParams{Context: ctx})
if err != nil {
return nil, err
}
all := make([]NodeStatusInfo, len(resp.Payload))
for i, p := range resp.Payload {
all[i].Addr = p.Key
all[i].HostID = p.Value
}
// Get host datacenter (hopefully cached)
for i := range all {
all[i].Datacenter, err = c.HostDatacenter(ctx, all[i].Addr)
if err != nil {
return nil, err
}
}
// Get live nodes
live, err := c.scyllaOps.GossiperEndpointLiveGet(&scyllaOperations.GossiperEndpointLiveGetParams{Context: ctx})
if err != nil {
return nil, err
}
setNodeStatus(all, NodeStatusUp, live.Payload)
// Get joining nodes
joining, err := c.scyllaOps.StorageServiceNodesJoiningGet(&scyllaOperations.StorageServiceNodesJoiningGetParams{Context: ctx})
if err != nil {
return nil, err
}
setNodeState(all, NodeStateJoining, joining.Payload)
// Get leaving nodes
leaving, err := c.scyllaOps.StorageServiceNodesLeavingGet(&scyllaOperations.StorageServiceNodesLeavingGetParams{Context: ctx})
if err != nil {
return nil, err
}
setNodeState(all, NodeStateLeaving, leaving.Payload)
// Get moving nodes
moving, err := c.scyllaOps.StorageServiceNodesMovingGet(&scyllaOperations.StorageServiceNodesMovingGetParams{Context: ctx})
if err != nil {
return nil, err
}
setNodeState(all, NodeStateMoving, moving.Payload)
// Sort by Datacenter and Address
sort.Slice(all, func(i, j int) bool {
if all[i].Datacenter != all[j].Datacenter {
return all[i].Datacenter < all[j].Datacenter
}
return all[i].Addr < all[j].Addr
})
return all, nil
}
func setNodeState(all []NodeStatusInfo, state NodeState, addrs []string) {
if len(addrs) == 0 {
return
}
m := strset.New(addrs...)
for i := range all {
if m.Has(all[i].Addr) {
all[i].State = state
}
}
}
func setNodeStatus(all []NodeStatusInfo, status NodeStatus, addrs []string) {
if len(addrs) == 0 {
return
}
m := strset.New(addrs...)
for i := range all {
if m.Has(all[i].Addr) {
all[i].Status = status
}
}
}