123 lines
3.5 KiB
Go
123 lines
3.5 KiB
Go
package policy
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"strings"
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"github.com/hashicorp/consul/api"
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)
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const (
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PrettyFormat string = "pretty"
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JSONFormat string = "json"
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)
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// Formatter defines methods provided by policy command output formatter
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type Formatter interface {
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FormatPolicy(policy *api.ACLPolicy) (string, error)
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FormatPolicyList(policies []*api.ACLPolicyListEntry) (string, error)
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}
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// GetSupportedFormats returns supported formats
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func GetSupportedFormats() []string {
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return []string{PrettyFormat, JSONFormat}
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}
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// NewFormatter returns Formatter implementation
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func NewFormatter(format string, showMeta bool) (formatter Formatter, err error) {
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switch format {
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case PrettyFormat:
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formatter = newPrettyFormatter(showMeta)
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case JSONFormat:
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formatter = newJSONFormatter(showMeta)
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default:
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err = fmt.Errorf("Unknown format: %s", format)
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}
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return formatter, err
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}
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func newPrettyFormatter(showMeta bool) Formatter {
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return &prettyFormatter{showMeta}
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}
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type prettyFormatter struct {
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showMeta bool
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}
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func (f *prettyFormatter) FormatPolicy(policy *api.ACLPolicy) (string, error) {
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var buffer bytes.Buffer
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buffer.WriteString(fmt.Sprintf("ID: %s\n", policy.ID))
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buffer.WriteString(fmt.Sprintf("Name: %s\n", policy.Name))
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if policy.Namespace != "" {
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buffer.WriteString(fmt.Sprintf("Namespace: %s\n", policy.Namespace))
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}
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buffer.WriteString(fmt.Sprintf("Description: %s\n", policy.Description))
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buffer.WriteString(fmt.Sprintf("Datacenters: %s\n", strings.Join(policy.Datacenters, ", ")))
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if f.showMeta {
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buffer.WriteString(fmt.Sprintf("Hash: %x\n", policy.Hash))
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buffer.WriteString(fmt.Sprintf("Create Index: %d\n", policy.CreateIndex))
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buffer.WriteString(fmt.Sprintf("Modify Index: %d\n", policy.ModifyIndex))
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}
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buffer.WriteString(fmt.Sprintln("Rules:"))
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buffer.WriteString(policy.Rules)
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return buffer.String(), nil
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}
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func (f *prettyFormatter) FormatPolicyList(policies []*api.ACLPolicyListEntry) (string, error) {
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var buffer bytes.Buffer
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for _, policy := range policies {
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buffer.WriteString(f.formatPolicyListEntry(policy))
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}
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return buffer.String(), nil
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}
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func (f *prettyFormatter) formatPolicyListEntry(policy *api.ACLPolicyListEntry) string {
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var buffer bytes.Buffer
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buffer.WriteString(fmt.Sprintf("%s:\n", policy.Name))
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buffer.WriteString(fmt.Sprintf(" ID: %s\n", policy.ID))
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if policy.Namespace != "" {
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buffer.WriteString(fmt.Sprintf(" Namespace: %s\n", policy.Namespace))
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}
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buffer.WriteString(fmt.Sprintf(" Description: %s\n", policy.Description))
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buffer.WriteString(fmt.Sprintf(" Datacenters: %s\n", strings.Join(policy.Datacenters, ", ")))
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if f.showMeta {
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buffer.WriteString(fmt.Sprintf(" Hash: %x\n", policy.Hash))
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buffer.WriteString(fmt.Sprintf(" Create Index: %d\n", policy.CreateIndex))
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buffer.WriteString(fmt.Sprintf(" Modify Index: %d\n", policy.ModifyIndex))
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}
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return buffer.String()
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}
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func newJSONFormatter(showMeta bool) Formatter {
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return &jsonFormatter{showMeta}
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}
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type jsonFormatter struct {
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showMeta bool
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}
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func (f *jsonFormatter) FormatPolicy(policy *api.ACLPolicy) (string, error) {
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b, err := json.MarshalIndent(policy, "", " ")
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if err != nil {
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return "", fmt.Errorf("Failed to marshal policy: %v", err)
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}
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return string(b), nil
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}
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func (f *jsonFormatter) FormatPolicyList(policies []*api.ACLPolicyListEntry) (string, error) {
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b, err := json.MarshalIndent(policies, "", " ")
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if err != nil {
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return "", fmt.Errorf("Failed to marshal policies: %v", err)
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}
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return string(b), nil
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}
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