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describe.go
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describe.go
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// Copyright © 2019 Portworx
//
// 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 pvc
import (
"bytes"
"text/tabwriter"
"github.com/cheynewallace/tabby"
"github.com/portworx/pxc/handler/volume"
"github.com/portworx/pxc/pkg/cliops"
"github.com/portworx/pxc/pkg/commander"
"github.com/portworx/pxc/pkg/config"
"github.com/portworx/pxc/pkg/portworx"
"github.com/portworx/pxc/pkg/util"
"github.com/spf13/cobra"
)
var describePvcCmd *cobra.Command
var _ = commander.RegisterCommandVar(func() {
describePvcCmd = &cobra.Command{
Use: "describe [NAME]",
Short: "Describe Portworx volume for Kubernetes PVCs",
Long: "Show detailed information of Portworx volume for Kubernetes PVCs",
Example: `
# Describe all pvcs that are Portworx volumes:
pxc pvc describe
# Describe specific pvc called pvc:
pxc pvc describe abc
# Describe list of pvcs (abc, xyz):
pxc pvc describe abc xyz`,
RunE: describePvcExec,
}
})
// describePvcCmd represents the describePvc command
var _ = commander.RegisterCommandInit(func() {
PvcAddCommand(describePvcCmd)
describePvcCmd.Flags().Bool("all-namespaces", false, "Kubernetes namespace")
})
func DescribeAddCommand(cmd *cobra.Command) {
describePvcCmd.AddCommand(cmd)
}
func describePvcExec(cmd *cobra.Command, args []string) error {
// Parse out all of the common cli volume flags
cvi := cliops.NewCliInputs(cmd, make([]string, 0))
// Create a cliOps object
cvOps := cliops.NewCliOps(cvi)
// Connect to pxc and k8s (if needed)
err := cvOps.Connect()
if err != nil {
return err
}
defer cvOps.Close()
// Create the parser object
pdf, err := NewPvcDescribeFormatter(cvOps, args)
if err != nil {
return err
}
// Print details and return any errors found during parsing
return util.PrintFormatted(pdf)
}
type pvcDescribeFormatter struct {
volume.VolumeDescribeFormatter
pvcNames []string
pvcs portworx.Pvcs
}
func NewPvcDescribeFormatter(cliOps cliops.CliOps, pvcNames []string) (*pvcDescribeFormatter, error) {
vcf := volume.NewVolumeDescribeFormatter(cliOps)
// Get namespace
ns, _, err := config.KM().Namespace()
if err != nil {
return nil, err
}
if cliOps.CliInputs().AllNamespaces {
ns = ""
}
pvcSpec := &portworx.PvcSpec{
Namespace: ns,
Labels: cliOps.CliInputs().Labels,
}
pvcs := portworx.NewPvcs(cliOps.PxOps(), cliOps.COps(), pvcSpec)
return &pvcDescribeFormatter{
VolumeDescribeFormatter: *vcf,
pvcNames: pvcNames,
pvcs: pvcs,
}, nil
}
// DefaultFormat returns the default string representation of the object
func (p *pvcDescribeFormatter) DefaultFormat() (string, error) {
return p.toTabbed()
}
func (p *pvcDescribeFormatter) toTabbed() (string, error) {
var b bytes.Buffer
writer := tabwriter.NewWriter(&b, 0, 0, 2, ' ', 0)
t := tabby.NewCustom(writer)
allPvcs, err := p.pvcs.GetPxPvcs()
if err != nil {
return "", err
}
pvcs, err := filterPxPvcs(allPvcs, p.pvcNames)
if err != nil {
return "", err
}
if len(pvcs) == 0 {
util.Printf("No resources found\n")
return "", nil
}
for i, n := range pvcs {
err = p.AddVolumeDetails(n.GetVolume(), t, n.Pods)
if err != nil {
return "", err
}
// Put two empty lines between volumes
if len(pvcs) > 1 && i != len(pvcs)-1 {
t.AddLine("")
t.AddLine("")
}
}
t.Print()
return b.String(), nil
}