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logging workshop #22

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28 changes: 10 additions & 18 deletions main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,6 @@ package main
import (
"context"
"errors"
"fmt"
"math/rand"
"net/http"
"strconv"
Expand All @@ -23,7 +22,7 @@ func main() {
})

if err != nil {
log.StdInfo(context.Background(), nil, err, "Failed to start Log")
log.StdFatal(context.Background(), nil, err, "Failed to start Log")
}

http.HandleFunc("/", HelloHandler)
Expand All @@ -44,22 +43,19 @@ func HelloHandler(w http.ResponseWriter, r *http.Request) {

keys, ok := r.URL.Query()["product_id"]
if !ok {
log.StdFatal(ctx, nil, nil, "No product id supplied")
fmt.Fprint(w, "No product id supplied")
log.StdError(ctx, nil, err, "No product id supplied")
return
}

// parse the product id
if len(keys) < 1 {
log.StdFatal(ctx, nil, nil, "No product id found")
fmt.Fprint(w, "No product id supplied")
log.StdError(ctx, nil, err, "No product id found")
return
}

productID, err = strconv.Atoi(keys[0])
if err != nil {
log.StdFatalf(ctx, nil, nil, "Product id not valid %s", keys[0])
fmt.Fprint(w, "No product id supplied")
log.StdErrorf(ctx, nil, err, "Product id not valid %s", keys[0])
return
}

Expand All @@ -68,17 +64,13 @@ func HelloHandler(w http.ResponseWriter, r *http.Request) {

product, err := GetProductFromDB(ctx, productID)
if err != nil {
fmt.Fprint(w, "Invalid id")
log.StdError(ctx, nil, err, "Failed get GetProductFromDB")
return
}

err = CalculateDiscount(ctx, product)
if err != nil {
fmt.Fprint(w, "Invalid id")
return
}
CalculateDiscount(ctx, product)

fmt.Fprintf(w, "%+v", product)
log.StdDebug(ctx, product, err, "HelloHandler Response")
}

func GetProductFromDB(ctx context.Context, id int) (*external.Product, error) {
Expand All @@ -92,12 +84,12 @@ func GetProductFromDB(ctx context.Context, id int) (*external.Product, error) {
return &result, nil
}

func CalculateDiscount(ctx context.Context, p *external.Product) error {
func CalculateDiscount(ctx context.Context, p *external.Product) {
if p.Stock%2 == 0 {
p.Discount = 20
log.StdError(ctx, p, nil, "User get 20 discount")
log.StdDebug(ctx, p, nil, "User get 20 discount")
} else {
p.Discount = 0
}
return nil
return
}