Add code for slack bot and deployment

Este commit está contenido en:
RouxAntoine 2021-03-22 00:17:15 +01:00
padre 868fa5f5cd
commit 12bcc9ac57
Firmado por: antoine
ID de clave GPG: 098FB66FC0475E70
Se han modificado 15 ficheros con 512 adiciones y 0 borrados

8
.dockerignore Archivo normal
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bin/
.vscode/
.git/
*.log
config.hcl
Dockerfile
.gitignore
manifests/

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.gitignore vendido Archivo normal
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.idea/
.vscode/
!.vscode/launch.json
bin/
!bin/.gitkeep
*.log
config.hcl

53
Dockerfile Archivo normal
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FROM --platform=$BUILDPLATFORM golang:1.16.0-alpine3.13 AS builder
# ex. amd64
ARG TARGETARCH
# ex. linux/amd64
ARG BUILDPLATFORM
RUN apk update && \
apk add --no-cache git ca-certificates tzdata gcc libc-dev && \
update-ca-certificates
ENV USER=appuser
ENV UID=10001
ENV GID=10001
WORKDIR /data
RUN addgroup \
--gid "${GID}" \
"${USER}" && \
adduser \
--disabled-password \
--gecos "" \
--home "/nonexistent" \
--shell "/sbin/nologin" \
--no-create-home \
--uid "${UID}" \
-G "${USER}" \
"${USER}"
COPY go.mod .
COPY go.sum .
RUN go mod download && \
go mod verify
COPY . .
RUN export GOARCH=$TARGETARCH; \
export GOOS=$(echo $BUILDPLATFORM | cut -d'/' -f1); \
export GOBUILDFLAGS="-a -tags netgo -installsuffix netgo"; \
export LDFLAGS="-w -s -d"; \
export CGO_ENABLED=0; \
go build -o bin/bot-$GOOS-$GOARCH cmd/main.go
FROM scratch
USER appuser:appuser
COPY --from=builder /usr/share/zoneinfo /usr/share/zoneinfo
COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
COPY --from=builder /etc/passwd /etc/passwd
COPY --from=builder /etc/group /etc/group
COPY --from=builder --chown=appuser:appuser /data/bin/* /go/bin/bot
WORKDIR /go
ENTRYPOINT ["/go/bin/bot"]

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Makefile Archivo normal
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.PHONY: docker-build
BOT_VERSION=latest
GOARCH=amd64
# GOARCH=arm
GOOS=darwin
# GOOS=linux
build: dependencies
@echo "build for os $(GOOS) and arch $(GOARCH)"
go build -o bin/slackbot-$(GOOS)-$(GOARCH) cmd/main.go
dependencies:
go mod download
go mod verify
docker-build:
DOCKER_BUILDKIT=1 docker build --force-rm -t docker.registry:5000/slackbot:$(BOT_VERSION) .
docker push docker.registry:5000/slackbot:$(BOT_VERSION)

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cmd/main.go Archivo normal
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package main
import (
"flag"
"fmt"
"go/slack-bot/pkg/check"
"go/slack-bot/pkg/notify"
"io/ioutil"
"log"
"os"
"path/filepath"
"github.com/hashicorp/hcl/v2"
"github.com/hashicorp/hcl/v2/gohcl"
"github.com/hashicorp/hcl/v2/hclsyntax"
)
type SlackConf struct {
BotID string `hcl:"bot_id"`
DestChannelID string `hcl:"dest_channel_id"`
WebhookID string `hcl:"webhook_id"`
}
func main() {
var configFile string
flag.StringVar(&configFile, "config", "config.hcl", "hcl application configuration file")
flag.Parse()
conf := ParseConfiguration(configFile)
slackNotifier := notify.NewSlackNotifier(conf.BotID, conf.DestChannelID, conf.WebhookID)
msg := check.NewCliChecker().
Check()
slackNotifier.Notify(msg)
}
//ParseConfiguration take filename path and parse it to Config.SlackConf
func ParseConfiguration(filename string) *SlackConf {
dir, err := os.Getwd()
if err != nil {
log.Fatalf("Fail to determine current directory to load default ./config.hcl file, %+v\n", err)
}
log.Printf("current dir is %s", dir)
if filename == "config.hcl" {
filename = fmt.Sprintf("%s%c%s", dir, os.PathSeparator, filename)
}
relativeFilename, err := filepath.Rel(dir, filename)
if err != nil {
log.Fatalf("Fail to determine configuration relative directory for file %s, %+v", filename, err)
}
src, err := ioutil.ReadFile(relativeFilename)
if err != nil {
log.Fatalf("Missing required parameter filename got : %s, %+v", relativeFilename, err)
}
file, diags := hclsyntax.ParseConfig(src, relativeFilename, hcl.Pos{Line: 1, Column: 1})
if diags.HasErrors() {
log.Fatalf("parse config error, %s", diags.Error())
}
config := &SlackConf{}
diags = gohcl.DecodeBody(file.Body, nil, config)
if diags.HasErrors() {
log.Fatalf("error config decode, %s", diags.Error())
}
if config.BotID == "" || config.DestChannelID == "" || config.WebhookID == "" {
log.Fatal("Missing required parameter : bot_id, dest_channel_id or webhook_id")
}
return config
}

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config.sample.hcl Archivo normal
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bot_id = ""
dest_channel_id = ""
webhook_id = ""

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go.mod Archivo normal
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module go/slack-bot
go 1.16
require (
github.com/hashicorp/hcl/v2 v2.9.1
github.com/pkg/errors v0.9.1 // indirect
github.com/slack-go/slack v0.8.2 // indirect
)

82
go.sum Archivo normal
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github.com/agext/levenshtein v1.2.1 h1:QmvMAjj2aEICytGiWzmxoE0x2KZvE0fvmqMOfy2tjT8=
github.com/agext/levenshtein v1.2.1/go.mod h1:JEDfjyjHDjOF/1e4FlBE/PkbqA9OfWu2ki2W0IB5558=
github.com/apparentlymart/go-dump v0.0.0-20180507223929-23540a00eaa3 h1:ZSTrOEhiM5J5RFxEaFvMZVEAM1KvT1YzbEOwB2EAGjA=
github.com/apparentlymart/go-dump v0.0.0-20180507223929-23540a00eaa3/go.mod h1:oL81AME2rN47vu18xqj1S1jPIPuN7afo62yKTNn3XMM=
github.com/apparentlymart/go-textseg v1.0.0 h1:rRmlIsPEEhUTIKQb7T++Nz/A5Q6C9IuX2wFoYVvnCs0=
github.com/apparentlymart/go-textseg v1.0.0/go.mod h1:z96Txxhf3xSFMPmb5X/1W05FF/Nj9VFpLOpjS5yuumk=
github.com/apparentlymart/go-textseg/v13 v13.0.0 h1:Y+KvPE1NYz0xl601PVImeQfFyEy6iT90AvPUL1NNfNw=
github.com/apparentlymart/go-textseg/v13 v13.0.0/go.mod h1:ZK2fH7c4NqDTLtiYLvIkEghdlcqw7yxLeM89kiTRPUo=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/go-test/deep v1.0.3/go.mod h1:wGDj63lr65AM2AQyKZd/NYHGb0R+1RLqB8NKt3aSFNA=
github.com/go-test/deep v1.0.4 h1:u2CU3YKy9I2pmu9pX0eq50wCgjfGIt539SqR7FbHiho=
github.com/go-test/deep v1.0.4/go.mod h1:wGDj63lr65AM2AQyKZd/NYHGb0R+1RLqB8NKt3aSFNA=
github.com/golang/protobuf v1.1.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/golang/protobuf v1.3.4 h1:87PNWwrRvUSnqS4dlcBU/ftvOIBep4sYuBLlh6rX2wk=
github.com/golang/protobuf v1.3.4/go.mod h1:vzj43D7+SQXF/4pzW/hwtAqwc6iTitCiVSaWz5lYuqw=
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github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0Ufc=
github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
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github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
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github.com/mitchellh/go-wordwrap v0.0.0-20150314170334-ad45545899c7/go.mod h1:ZXFpozHsX6DPmq2I0TCekCxypsnAUbP2oI0UX1GXzOo=
github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/sergi/go-diff v1.0.0 h1:Kpca3qRNrduNnOQeazBd0ysaKrUJiIuISHxogkT9RPQ=
github.com/sergi/go-diff v1.0.0/go.mod h1:0CfEIISq7TuYL3j771MWULgwwjU+GofnZX9QAmXWZgo=
github.com/slack-go/slack v0.8.2 h1:D7jNu0AInBfdQ4QyKPtVSp+ZxQes3EzWW17RZ/va4JE=
github.com/slack-go/slack v0.8.2/go.mod h1:FGqNzJBmxIsZURAxh2a8D21AnOVvvXZvGligs4npPUM=
github.com/spf13/pflag v1.0.2 h1:Fy0orTDgHdbnzHcsOgfCN4LtHf0ec3wwtiwJqwvf3Gc=
github.com/spf13/pflag v1.0.2/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
github.com/vmihailenco/msgpack v3.3.3+incompatible h1:wapg9xDUZDzGCNFlwc5SqI1rvcciqcxEHac4CYj89xI=
github.com/vmihailenco/msgpack v3.3.3+incompatible/go.mod h1:fy3FlTQTDXWkZ7Bh6AcGMlsjHatGryHQYUTf1ShIgkk=
github.com/vmihailenco/msgpack/v4 v4.3.12 h1:07s4sz9IReOgdikxLTKNbBdqDMLsjPKXwvCazn8G65U=
github.com/vmihailenco/msgpack/v4 v4.3.12/go.mod h1:gborTTJjAo/GWTqqRjrLCn9pgNN+NXzzngzBKDPIqw4=
github.com/vmihailenco/tagparser v0.1.1 h1:quXMXlA39OCbd2wAdTsGDlK9RkOk6Wuw+x37wVyIuWY=
github.com/vmihailenco/tagparser v0.1.1/go.mod h1:OeAg3pn3UbLjkWt+rN9oFYB6u/cQgqMEUPoW2WPyhdI=
github.com/zclconf/go-cty v1.2.0/go.mod h1:hOPWgoHbaTUnI5k4D2ld+GRpFJSCe6bCM7m1q/N4PQ8=
github.com/zclconf/go-cty v1.8.0 h1:s4AvqaeQzJIu3ndv4gVIhplVD0krU+bgrcLSVUnaWuA=
github.com/zclconf/go-cty v1.8.0/go.mod h1:vVKLxnk3puL4qRAv72AO+W99LUD4da90g3uUAzyuvAk=
github.com/zclconf/go-cty-debug v0.0.0-20191215020915-b22d67c1ba0b h1:FosyBZYxY34Wul7O/MSKey3txpPYyCqVO5ZyceuQJEI=
github.com/zclconf/go-cty-debug v0.0.0-20191215020915-b22d67c1ba0b/go.mod h1:ZRKQfBXbGkpdV6QMzT3rU1kSTAnfu1dO8dPKjYprgj8=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20190426145343-a29dc8fdc734 h1:p/H982KKEjUnLJkM3tt/LemDnOc1GiZL5FCVlORJ5zo=
golang.org/x/crypto v0.0.0-20190426145343-a29dc8fdc734/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/net v0.0.0-20180811021610-c39426892332/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
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golang.org/x/sys v0.0.0-20190502175342-a43fa875dd82 h1:vsphBvatvfbhlb4PO1BYSr9dzugGxJ/SQHoNufZJq1w=
golang.org/x/sys v0.0.0-20190502175342-a43fa875dd82/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
golang.org/x/text v0.3.5 h1:i6eZZ+zk0SOf0xgBpEpPD18qWcJda6q1sxt3S0kzyUQ=
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gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=

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manifests/.gitignore vendido Archivo normal
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# Local .terraform directories
**/.terraform/*
# .tfstate files
*.tfstate
*.tfstate.*
# Crash log files
crash.log
# Exclude all .tfvars files, which are likely to contain sentitive data, such as
# password, private keys, and other secrets. These should not be part of version
# control as they are data points which are potentially sensitive and subject
# to change depending on the environment.
#
*.tfvars
# Ignore override files as they are usually used to override resources locally and so
# are not checked in
override.tf
override.tf.json
*_override.tf
*_override.tf.json
# Include override files you do wish to add to version control using negated pattern
#
# !example_override.tf
# Include tfplan files to ignore the plan output of command: terraform plan -out=tfplan
# example: *tfplan*
# Ignore CLI configuration files
.terraformrc
terraform.rc

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manifests/.terraform.lock.hcl Archivo normal
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# This file is maintained automatically by "terraform init".
# Manual edits may be lost in future updates.
provider "registry.terraform.io/hashicorp/kubernetes" {
version = "2.0.3"
constraints = ">= 2.0.0"
hashes = [
"h1:u3QLP3ca1ZYtdx4t9LrNLzAA3HY/GAT06hznb2pqNC4=",
"zh:3847733636ed2aca8694227ee6936fecc6cec9573818ecf64acc2a01a4fb3ae4",
"zh:44d3e88227174d2e51e0273e732e54bb5f5d8150bbf1adecd2be198c857a0264",
"zh:7c147baeac90ddc71b8c106409dc2e06e6fe04448a0ae36c7ef919b8b27c8d5f",
"zh:832ebd1eec844fdc00ecbc5e694ecf532d0c7a94f2a1697ea0c7bc159696d529",
"zh:920c8f64925d346a0621aadede6a4ac1bbe650f16c2074a0a6b5eeb7a5c35cf7",
"zh:a26906cd3aeb28f402972154dbb3ae1ac6d739ce3e4b00906c9d4b1e263d5a56",
"zh:a7b3cbd06684f843f700ee9281c583cc593e00e3acc2c0a34f6dad4e35a1ec60",
"zh:b43c05ade832995a09c40a1c2f080586f38de1edc8c46be2e6f90b96c58a2482",
"zh:cba2a979889e79ffe48bb5ea7e63f88c344ae2cd7a341afb77b3c8d417658d6c",
"zh:e00b2ec7357a58a435a69146da3c256178caab83a6574969d4660b69996c7955",
"zh:f95f179f68aed39b8d73d7914176baf74509d74f90a1e3a600a8eb4461f8f0a3",
]
}

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manifests/common.tf Archivo normal
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resource "kubernetes_namespace" "monitoring_namespace" {
metadata {
name = "monitoring"
}
}
resource "kubernetes_config_map" "slack_bot_config" {
metadata {
name = "slack-bot-hcl"
namespace = kubernetes_namespace.monitoring_namespace.id
}
data = {
"config.hcl" = <<EOF
bot_id = "${var.bot_id}"
dest_channel_id = "${var.dest_channel_id}"
webhook_id = "${var.webhook_id}"
EOF
}
}
locals {
config_volume_name = "system-bot-volume"
}
resource "kubernetes_cron_job" "slack_bot_checker" {
metadata {
name = "system-cron-bot-job"
namespace = kubernetes_namespace.monitoring_namespace.id
}
spec {
concurrency_policy = "Replace"
failed_jobs_history_limit = 5
# each day at 00:01
schedule = "1 0 * * *"
starting_deadline_seconds = 10
successful_jobs_history_limit = 10
job_template {
metadata {
name = "system-bot-job"
}
spec {
backoff_limit = 2
ttl_seconds_after_finished = 10
template {
metadata {
labels = {
app = "system-bot"
env = var.environment
}
}
spec {
volume {
name = local.config_volume_name
config_map {
name = kubernetes_config_map.slack_bot_config.metadata.0.name
}
}
container {
name = "slackbot"
image = format("docker.registry/slackbot:%s", var.bot_version)
args = ["-config", "/conf/config.hcl"]
volume_mount {
mount_path = "/conf"
name = local.config_volume_name
}
}
}
}
}
}
}
}

28
manifests/configure.tf Archivo normal
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terraform {
required_version = ">= 0.12"
required_providers {
kubernetes = {
source = "hashicorp/kubernetes"
version = ">= 2.0"
}
}
backend "etcdv3" {
endpoints = ["https://100.64.0.19:2379"]
lock = true
prefix = "/terraform-state/slackbot/"
cacert_path = "/Users/antoine/virtualization/kubernetes-the-hard-way/certs/ca.pem"
cert_path = "/Users/antoine/virtualization/kubernetes-the-hard-way/certs/kubernetes.pem"
key_path = "/Users/antoine/virtualization/kubernetes-the-hard-way/certs/kubernetes-key.pem"
}
}
provider "kubernetes" {
config_path = "~/.kube/config.kubeconfig"
config_context = "my-context"
config_context_cluster = "cluster-1"
config_context_auth_info = "admin"
}

23
manifests/variable.tf Archivo normal
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variable "environment" {
default = "prod"
}
variable "bot_id" {
description = "slack bot id"
sensitive = true
}
variable "dest_channel_id" {
description = "slack alerting target channel id"
sensitive = true
}
variable "webhook_id" {
description = "slack webhook secret id"
sensitive = true
}
variable "bot_version" {
default = "latest"
description = "slack bot container version"
}

24
pkg/check/command.go Archivo normal
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package check
import "go/slack-bot/pkg/notify"
type Checker interface {
Check() notify.Message
}
//CliChecker implement checker with cli command
type CliChecker struct {
}
//NewCliChecker buld new cli checker
func NewCliChecker() *CliChecker {
return &CliChecker{}
}
//Check function use to run cli call to check some parameter
func (cc *CliChecker) Check() notify.Message {
return notify.Message{
Content: "full disk",
ShouldNotify: true,
}
}

51
pkg/notify/slack.go Archivo normal
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package notify
import (
"fmt"
"log"
"github.com/slack-go/slack"
)
const slackHookBaseURL = "hooks.slack.com/services"
//Notifier interface represent mean to send notification
type Notifier interface {
Notify(message string)
}
//Message store and represent alerting message
type Message struct {
ShouldNotify bool
Content string
}
type SlackNotifier struct {
BotID string
DestChannelID string
WebhookID string
}
//NewSlackNotifier create slack notifier
func NewSlackNotifier(BotID, DestChannelID, WebhookID string) *SlackNotifier {
return &SlackNotifier{
BotID: BotID,
DestChannelID: DestChannelID,
WebhookID: WebhookID,
}
}
//Notify send notification to channel
func (sn *SlackNotifier) Notify(message Message) {
if message.ShouldNotify {
msg := &slack.WebhookMessage{
Text: message.Content,
}
url := fmt.Sprintf("https://%s/%s/%s/%s", slackHookBaseURL, sn.BotID, sn.DestChannelID, sn.WebhookID)
err := slack.PostWebhook(url, msg)
if err != nil {
log.Printf("Send message error %+v", err)
}
}
}