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alert_rules.go
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alert_rules.go
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//
// Author:: Darren Murray (<[email protected]>)
// Copyright:: Copyright 2021, Lacework Inc.
// License:: Apache License, Version 2.0
//
// 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 api
import (
"fmt"
"strings"
"github.com/pkg/errors"
)
// AlertRulesService is the service that interacts with
// the AlertRules schema from the Lacework APIv2 Server
type AlertRulesService struct {
client *Client
}
type alertRuleSeverity int
type AlertRuleSeverities []alertRuleSeverity
const AlertRuleEventType = "Event"
func (sevs AlertRuleSeverities) toInt() []int {
var res []int
for _, i := range sevs {
res = append(res, int(i))
}
return res
}
func (sevs AlertRuleSeverities) ToStringSlice() []string {
var res []string
for _, i := range sevs {
switch i {
case AlertRuleSeverityCritical:
res = append(res, "Critical")
case AlertRuleSeverityHigh:
res = append(res, "High")
case AlertRuleSeverityMedium:
res = append(res, "Medium")
case AlertRuleSeverityLow:
res = append(res, "Low")
case AlertRuleSeverityInfo:
res = append(res, "Info")
default:
continue
}
}
return res
}
func NewAlertRuleSeverities(sevSlice []string) AlertRuleSeverities {
var res AlertRuleSeverities
for _, i := range sevSlice {
sev := convertSeverity(i)
if sev != AlertRuleSeverityUnknown {
res = append(res, sev)
}
}
return res
}
func NewAlertRuleSeveritiesFromIntSlice(sevSlice []int) AlertRuleSeverities {
var res AlertRuleSeverities
for _, i := range sevSlice {
sev := convertSeverityInt(i)
if sev != AlertRuleSeverityUnknown {
res = append(res, sev)
}
}
return res
}
func convertSeverity(sev string) alertRuleSeverity {
switch strings.ToLower(sev) {
case "critical":
return AlertRuleSeverityCritical
case "high":
return AlertRuleSeverityHigh
case "medium":
return AlertRuleSeverityMedium
case "low":
return AlertRuleSeverityLow
case "info":
return AlertRuleSeverityInfo
default:
return AlertRuleSeverityUnknown
}
}
func convertSeverityInt(sev int) alertRuleSeverity {
switch sev {
case 1:
return AlertRuleSeverityCritical
case 2:
return AlertRuleSeverityHigh
case 3:
return AlertRuleSeverityMedium
case 4:
return AlertRuleSeverityLow
case 5:
return AlertRuleSeverityInfo
default:
return AlertRuleSeverityUnknown
}
}
const (
AlertRuleSeverityCritical alertRuleSeverity = 1
AlertRuleSeverityHigh alertRuleSeverity = 2
AlertRuleSeverityMedium alertRuleSeverity = 3
AlertRuleSeverityLow alertRuleSeverity = 4
AlertRuleSeverityInfo alertRuleSeverity = 5
AlertRuleSeverityUnknown alertRuleSeverity = 0
)
// NewAlertRule returns an instance of the AlertRule struct
//
// Basic usage: Initialize a new AlertRule struct, then
// use the new instance to do CRUD operations
//
// client, err := api.NewClient("account")
// if err != nil {
// return err
// }
//
// alertRule := api.NewAlertRule(
// "Foo",
// api.AlertRuleConfig{
// Description: "My Alert Rule"
// Severities: api.AlertRuleSeverities{api.AlertRuleSeverityHigh,
// Channels: []string{"TECHALLY_000000000000AAAAAAAAAAAAAAAAAAAA"},
// ResourceGroups: []string{"TECHALLY_111111111111AAAAAAAAAAAAAAAAAAAA"}
// },
// },
// )
//
// client.V2.AlertRules.Create(alertRule)
//
func NewAlertRule(name string, rule AlertRuleConfig) AlertRule {
return AlertRule{
Channels: rule.Channels,
Type: AlertRuleEventType,
Filter: AlertRuleFilter{
Name: name,
Enabled: 1,
Description: rule.Description,
Severity: rule.Severities.toInt(),
ResourceGroups: rule.ResourceGroups,
EventCategories: rule.EventCategories,
},
}
}
func (rule AlertRuleFilter) Status() string {
if rule.Enabled == 1 {
return "Enabled"
}
return "Disabled"
}
// List returns a list of Alert Rules
func (svc *AlertRulesService) List() (response AlertRulesResponse, err error) {
err = svc.client.RequestDecoder("GET", apiV2AlertRules, nil, &response)
return
}
// Create creates a single Alert Rule
func (svc *AlertRulesService) Create(rule AlertRule) (
response AlertRuleResponse,
err error,
) {
err = svc.client.RequestEncoderDecoder("POST", apiV2AlertRules, rule, &response)
return
}
// Delete deletes a Alert Rule that matches the provided guid
func (svc *AlertRulesService) Delete(guid string) error {
if guid == "" {
return errors.New("specify an intgGuid")
}
return svc.client.RequestDecoder(
"DELETE",
fmt.Sprintf(apiV2AlertRuleFromGUID, guid),
nil,
nil,
)
}
// Update updates a single Alert Rule of the provided guid.
func (svc *AlertRulesService) Update(data AlertRule) (
response AlertRuleResponse,
err error,
) {
if data.Guid == "" {
err = errors.New("specify a Guid")
return
}
apiPath := fmt.Sprintf(apiV2AlertRuleFromGUID, data.Guid)
err = svc.client.RequestEncoderDecoder("PATCH", apiPath, data, &response)
return
}
// Get returns a raw response of the Alert Rule with the matching guid.
func (svc *AlertRulesService) Get(guid string, response interface{}) error {
if guid == "" {
return errors.New("specify a Guid")
}
apiPath := fmt.Sprintf(apiV2AlertRuleFromGUID, guid)
return svc.client.RequestDecoder("GET", apiPath, nil, &response)
}
type AlertRuleConfig struct {
Channels []string
Description string
Severities AlertRuleSeverities
ResourceGroups []string
EventCategories []string
}
type AlertRule struct {
Guid string `json:"mcGuid,omitempty"`
Type string `json:"type"`
Channels []string `json:"intgGuidList"`
Filter AlertRuleFilter `json:"filters"`
}
type AlertRuleFilter struct {
Name string `json:"name"`
Enabled int `json:"enabled"`
Description string `json:"description,omitempty"`
Severity []int `json:"severity"`
ResourceGroups []string `json:"resourceGroups,omitempty"`
EventCategories []string `json:"eventCategory,omitempty"`
CreatedOrUpdatedTime string `json:"createdOrUpdatedTime,omitempty"`
CreatedOrUpdatedBy string `json:"createdOrUpdatedBy,omitempty"`
}
type AlertRuleResponse struct {
Data AlertRule `json:"data"`
}
type AlertRulesResponse struct {
Data []AlertRule `json:"data"`
}