New minor release after complete rewrite.

Brings neat and testable codebase with minimum allocations in mind.

base.go

@@ -0,0 +1,94 @@
+package gql
+
+import (
+	"crypto/tls"
+	"time"
+
+	"github.com/lukaszraczylo/go-simple-graphql/utils/concurrency"
+	"github.com/lukaszraczylo/go-simple-graphql/utils/logger"
+
+	"golang.org/x/net/http2"
+
+	"log"
+	"net/http"
+	"os"
+	"strings"
+
+	"github.com/allegro/bigcache"
+	"github.com/gookit/goutil/envutil"
+)
+
+func NewConnection() *BaseClient {
+
+	b := &BaseClient{
+		client:             &http.Client{},
+		concurrencyManager: concurrency.NewPool(-1),
+		MaxGoRoutines:      -1,
+		LoggingLevel:       logger.Warn,
+		LoggerColorful:     true,
+	}
+
+	if b.LoggerWriter == nil {
+		b.LoggerWriter = log.New(os.Stdout, "", log.LstdFlags)
+	} else {
+		b.LoggerWriter = b.LoggerWriter
+	}
+
+	b.endpoint = envutil.Getenv("GRAPHQL_ENDPOINT", "https://api.github.com/graphql")
+	b.responseType = envutil.Getenv("GRAPHQL_OUTPUT", "string")
+	b.validate = envutil.GetBool("GRAPHQL_VALIDATE", false)
+	b.cache.enabled = envutil.GetBool("GRAPHQL_CACHE_ENABLED", true)
+	b.cache.ttl = envutil.GetInt("GRAPHQL_CACHE_TTL", 60)
+
+	if b.cache.enabled {
+		var err error
+		b.cache.client, err = bigcache.NewBigCache(bigcache.DefaultConfig(time.Duration(b.cache.ttl) * time.Second))
+		if err != nil {
+			b.Logger.Error(b, "Error while creating cache client;", "error", err.Error())
+		}
+	}
+
+	b_tmp_log_level := envutil.Getenv("LOG_LEVEL", "info")
+
+	switch b_tmp_log_level {
+	case "silent":
+		b.LoggingLevel = logger.Silent
+	case "error":
+		b.LoggingLevel = logger.Error
+	case "warn":
+		b.LoggingLevel = logger.Warn
+	case "info":
+		b.LoggingLevel = logger.Info
+	case "debug":
+		b.LoggingLevel = logger.Debug
+	}
+
+	b.Logger = NewLogger(b.LoggerWriter, logger.Config{
+		Colorful: b.LoggerColorful,
+		LogLevel: b.LoggingLevel,
+	})
+
+	var httpClient *http.Client
+	if strings.HasPrefix(b.endpoint, "http://") {
+		httpClient = &http.Client{
+			Transport: http.DefaultTransport,
+		}
+	} else {
+		tlsClientConfig := &tls.Config{}
+		if strings.HasPrefix(b.endpoint, "https://") {
+			tlsClientConfig.InsecureSkipVerify = true
+		}
+		http2Transport := &http2.Transport{
+			AllowHTTP:       true,
+			TLSClientConfig: tlsClientConfig,
+		}
+		httpClient = &http.Client{
+			Transport: http2Transport,
+		}
+	}
+	b.client = httpClient
+
+	b.Logger.Debug(b, "graphQL client initialized;", "endpoint", b.endpoint, "responseType", b.responseType, "validate", b.validate, "cache", b.cache.enabled, "cacheTTL", b.cache.ttl, "maxGoRoutines", b.MaxGoRoutines, "loggingLevel", b_tmp_log_level, "loggerColorful", b.LoggerColorful)
+	b.Logger.Info(b, "graphQL client initialized;")
+	return b
+}