percybolmer

package version

var (
	Version = "0.0.1"
)

percybolmer

package main

import "log"

var (
	version = "0.0.1"

	runner = "client-1.0.0"
)

percybolmer

percy@DESKTOP-3DP516F:~/development/buildflags$ go build -ldflags="-help"
# programmingpercy.tech/buildflags
usage: link [options] main.o
  -B note
        add an ELF NT_GNU_BUILD_ID note when using ELF
  -E entry
        set entry symbol name
  -H type
        set header type
  -I linker

percybolmer

global:
  scrape_interval: 5s
  external_labels:
    monitor: 'cadence-monitor'
scrape_configs:
  - job_name: 'prometheus'
    static_configs:
      - targets: # addresses to scrape
          - 'localhost:9090'
          - 'cadence:8000'

percybolmer

// SetupCadenceClient is used to create the client we can use
func SetupCadenceClient() (*CadenceClient, error) {
	// Create a dispatcher used to communicate with server
	dispatcher := yarpc.NewDispatcher(yarpc.Config{
		Name: cadenceClientName,
		Outbounds: yarpc.Outbounds{
			// This shouldnt be hard coded in real app
			// This is a map, so we store this communication channel on "cadence-frontend"
			cadenceService: {Unary: grpc.NewTransport().NewSingleOutbound("localhost:7833")},
		},

percybolmer

package main

import (
	"fmt"
	localprom "programmingpercy/cadence-tavern/prometheus"
	_ "programmingpercy/cadence-tavern/workflows/greetings"
	_ "programmingpercy/cadence-tavern/workflows/orders"

	_ "go.uber.org/cadence/.gen/go/cadence"
	"go.uber.org/cadence/.gen/go/cadence/workflowserviceclient"

percybolmer

package prometheus

import (
	"time"

	prom "github.com/m3db/prometheus_client_golang/prometheus"
	"github.com/uber-go/tally"
	"github.com/uber-go/tally/prometheus"
	"go.uber.org/zap"
)

percybolmer

// Start API
go run *.go

// New Terminal
// Send CURL
percy@dev:~/development/cadence-demo/app/api$ curl localhost:8080/greetings -d '{"name": "Percy", "age": 22}'
// RESPONSE
{"name":"Percy","lastVisit":"2022-03-04T07:21:33.1540528+01:00","timesVisited":1,"age":22}

percybolmer

package main

import (
	"context"
	"log"
	"net/http"
	"time"

	"go.uber.org/cadence/client"
)

percybolmer

// Order is used to send a signal to the worker
func (cc *CadenceClient) Order(w http.ResponseWriter, r *http.Request) {
	// Grab order info from body
	var orderInfo orders.Order

	err := json.NewDecoder(r.Body).Decode(&orderInfo)
	if err != nil {
		http.Error(w, err.Error(), http.StatusBadRequest)
		return
	}