6447ea51d2
This takes advantange of the latest features in go-cid, peer.ID and go-multiaddr and makes the Go types serializable by default. This means we no longer need to copy between Pin <-> PinSerial, or ID <-> IDSerial etc. We can now efficiently binary-encode these types using short field keys and without parsing/stringifying (in many cases it just a cast). We still get the same json output as before (with minor modifications for Cids). This should greatly improve Cluster performance and memory usage when dealing with large collections of items. License: MIT Signed-off-by: Hector Sanjuan <hector@protocol.ai>
115 lines
2.4 KiB
Go
115 lines
2.4 KiB
Go
// Package disk implements an ipfs-cluster informer which can provide different
|
|
// disk-related metrics from the IPFS daemon as an api.Metric.
|
|
package disk
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
|
|
logging "github.com/ipfs/go-log"
|
|
rpc "github.com/libp2p/go-libp2p-gorpc"
|
|
|
|
"github.com/ipfs/ipfs-cluster/api"
|
|
"go.opencensus.io/trace"
|
|
)
|
|
|
|
// MetricType identifies the type of metric to fetch from the IPFS daemon.
|
|
type MetricType int
|
|
|
|
const (
|
|
// MetricFreeSpace provides the available space reported by IPFS
|
|
MetricFreeSpace = iota
|
|
// MetricRepoSize provides the used space reported by IPFS
|
|
MetricRepoSize
|
|
)
|
|
|
|
var logger = logging.Logger("diskinfo")
|
|
|
|
// Informer is a simple object to implement the ipfscluster.Informer
|
|
// and Component interfaces.
|
|
type Informer struct {
|
|
config *Config
|
|
rpcClient *rpc.Client
|
|
}
|
|
|
|
// NewInformer returns an initialized informer using the given InformerConfig.
|
|
func NewInformer(cfg *Config) (*Informer, error) {
|
|
err := cfg.Validate()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return &Informer{
|
|
config: cfg,
|
|
}, nil
|
|
}
|
|
|
|
// Name returns the user-facing name of this informer.
|
|
func (disk *Informer) Name() string {
|
|
return disk.config.Type.String()
|
|
}
|
|
|
|
// SetClient provides us with an rpc.Client which allows
|
|
// contacting other components in the cluster.
|
|
func (disk *Informer) SetClient(c *rpc.Client) {
|
|
disk.rpcClient = c
|
|
}
|
|
|
|
// Shutdown is called on cluster shutdown. We just invalidate
|
|
// any metrics from this point.
|
|
func (disk *Informer) Shutdown(ctx context.Context) error {
|
|
ctx, span := trace.StartSpan(ctx, "informer/disk/Shutdown")
|
|
defer span.End()
|
|
|
|
disk.rpcClient = nil
|
|
return nil
|
|
}
|
|
|
|
// GetMetric returns the metric obtained by this
|
|
// Informer.
|
|
func (disk *Informer) GetMetric(ctx context.Context) *api.Metric {
|
|
ctx, span := trace.StartSpan(ctx, "informer/disk/GetMetric")
|
|
defer span.End()
|
|
|
|
if disk.rpcClient == nil {
|
|
return &api.Metric{
|
|
Name: disk.Name(),
|
|
Valid: false,
|
|
}
|
|
}
|
|
|
|
var repoStat api.IPFSRepoStat
|
|
var metric uint64
|
|
|
|
valid := true
|
|
|
|
err := disk.rpcClient.CallContext(
|
|
ctx,
|
|
"",
|
|
"Cluster",
|
|
"IPFSRepoStat",
|
|
struct{}{},
|
|
&repoStat,
|
|
)
|
|
if err != nil {
|
|
logger.Error(err)
|
|
valid = false
|
|
} else {
|
|
switch disk.config.Type {
|
|
case MetricFreeSpace:
|
|
metric = repoStat.StorageMax - repoStat.RepoSize
|
|
case MetricRepoSize:
|
|
metric = repoStat.RepoSize
|
|
}
|
|
}
|
|
|
|
m := &api.Metric{
|
|
Name: disk.Name(),
|
|
Value: fmt.Sprintf("%d", metric),
|
|
Valid: valid,
|
|
}
|
|
|
|
m.SetTTL(disk.config.MetricTTL)
|
|
return m
|
|
}
|