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info.go
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/
info.go
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// Copyright 2023-2024 The Inspektor Gadget 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.
package grpcruntime
import (
"context"
"encoding/json"
"fmt"
"math"
"time"
log "github.com/sirupsen/logrus"
"github.com/inspektor-gadget/inspektor-gadget/internal/deployinfo"
"github.com/inspektor-gadget/inspektor-gadget/pkg/gadget-service/api"
)
// InitDeployInfo loads the locally stored deploy info. If no deploy info is stored locally,
// it will try to fetch it from one of the remotes and store it locally. It will issue warnings on
// failures.
func (r *Runtime) InitDeployInfo() {
// Initialize info
info, err := deployinfo.Load()
if err == nil {
r.info = info
return
}
info, err = r.loadRemoteDeployInfo()
if err != nil {
log.Warnf("could not load gadget info from remote: %v", err)
return
}
r.info = info
err = deployinfo.Store(info)
if err != nil {
log.Warnf("could not store gadget info: %v", err)
}
}
func (r *Runtime) UpdateDeployInfo() error {
info, err := r.loadRemoteDeployInfo()
if err != nil {
return fmt.Errorf("loading remote gadget info: %w", err)
}
return deployinfo.Store(info)
}
func (r *Runtime) loadRemoteDeployInfo() (*deployinfo.DeployInfo, error) {
duration := r.globalParams.Get(ParamConnectionTimeout).AsUint()
if duration > math.MaxInt64 {
return nil, fmt.Errorf("duration (%d) exceeds math.MaxInt64 (%d)", duration, math.MaxInt64)
}
timeout := time.Second * time.Duration(duration)
ctx, cancelDial := context.WithTimeout(context.Background(), timeout)
defer cancelDial()
// use default params for now
params := r.ParamDescs().ToParams()
conn, err := r.getConnToRandomTarget(ctx, params)
if err != nil {
return nil, fmt.Errorf("dialing random target: %w", err)
}
defer conn.Close()
client := api.NewBuiltInGadgetManagerClient(conn)
info, err := client.GetInfo(ctx, &api.InfoRequest{Version: "1.0"})
if err != nil {
return nil, fmt.Errorf("get info from gadget pod: %w", err)
}
retInfo := &deployinfo.DeployInfo{
Experimental: info.Experimental,
ServerVersion: info.ServerVersion,
}
err = json.Unmarshal(info.Catalog, &retInfo.Catalog)
if err != nil {
return nil, fmt.Errorf("unmarshaling info: %w", err)
}
return retInfo, nil
}