feature : Allow Debug variable to be set via Environment (#58)

* modified code so that debug variable can  be set through the environment

* modified code to set debug variable through environment

internal/client.go

@@ -30,6 +30,7 @@ const (
 
 	envBloxOneCSPURL = "BLOXONE_CSP_URL"
 	envBloxOneAPIKey = "BLOXONE_API_KEY"
+	envIBLogLevel    = "IB_LOG_LEVEL"
 
 	version       = "0.1"
 	sdkIdentifier = "golang-sdk"

internal/configuration.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"net/http"
 	"os"
+	"strconv"
 	"strings"
 )
 
@@ -79,7 +80,7 @@ func NewConfiguration() *Configuration {
 		CSPURL:           lookupEnv(envBloxOneCSPURL, "https://csp.infoblox.com"),
 		APIKey:           lookupEnv(envBloxOneAPIKey, ""),
 		DefaultHeader:    make(map[string]string),
-		Debug:            false,
+		Debug:            lookupEnvBool(envIBLogLevel, false),
 		UserAgent:        fmt.Sprintf("bloxone-%s/%s", sdkIdentifier, version),
 		Servers:          ServerConfigurations{},
 		OperationServers: map[string]ServerConfigurations{},
@@ -210,3 +211,12 @@ func lookupEnv(key, def string) string {
 	}
 	return def
 }
+
+func lookupEnvBool(key string, def bool) bool {
+	if logLvlStr, ok := os.LookupEnv(key); ok {
+		if logLvl, err := strconv.ParseBool(logLvlStr); err == nil {
+			return logLvl
+		}
+	}
+	return def
+}