gRPC connection pooling grpcconn (#178)

* gRPC connection pooling `grpcconn`

.github/workflows/lint.yaml

@@ -30,6 +30,6 @@ jobs:
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v3
         with:
-          version: v1.52.2
+          version: v1.54.2
           skip-cache: true # cache/restore is done by actions/setup-go@v3 step
           args: -v

.github/workflows/test.yaml

@@ -18,6 +18,7 @@ jobs:
         go-version:
           - 1.19.x
           - 1.20.x
+          - 1.21.x
         os: [ ubuntu-latest ]
     runs-on: ${{ matrix.os }}
     steps:

.golangci.yml

@@ -5,7 +5,7 @@ linters:
   disable-all: true
   enable:
     - bodyclose # https://github.com/timakin/bodyclose
-    - depguard
+    - gomodguard
     - errcheck # Mandatory. Do not disable.
     - gocritic
     - goimports
@@ -74,23 +74,20 @@ linters-settings:
      - shadow
      - fieldalignment
 
-  depguard:
-    # Kind of list is passed in.
-    # Allowed values: allowlist|denylist
-    # Default: denylist
-    list-type: denylist
-    # Check the list against standard lib.
-    # Default: false
-    include-go-root: true
-    # A list of packages for the list type specified.
-    # Default: []
-    packages:
-      - github.com/pkg/errors
-    # A list of packages for the list type specified.
-    # Specify an error message to output when a denied package is used.
-    # Default: []
-    packages-with-error-message:
-      - github.com/pkg/errors: 'Deprecated: use standard "errors" or "github.com/mailgun/holster/v4/errors" instead.'
+  gomodguard:
+    blocked:
+      # List of blocked modules.
+      # Default: []
+      modules:
+        - github.com/golang/protobuf:
+            recommendations:
+              - google.golang.org/protobuf
+            reason: "see https://developers.google.com/protocol-buffers/docs/reference/go/faq#modules"
+        - github.com/pkg/errors:
+            recommendations:
+              - errors
+              - github.com/mailgun/errors
+            reason: "Deprecated"
 
   stylecheck:
     # Select the Go version to target.

Makefile

@@ -1,11 +1,12 @@
-GOLINT = $(GOPATH)/bin/golangci-lint
+GOLANGCI_LINT = $(GOPATH)/bin/golangci-lint
+GOLANGCI_LINT_VERSION = v1.54.1
 
 .PHONY: lint
-lint: $(GOLINT)
-	$(GOLINT) run
+lint: $(GOLANGCI_LINT)
+	$(GOLANGCI_LINT) run
 
-$(GOLINT):
-	curl -sfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(GOPATH)/bin v1.52.2
+$(GOLANGCI_LINT):
+	curl -sfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(GOPATH)/bin $(GOLANGCI_LINT_VERSION)
 
 .PHONY: test
 test:

callstack/callstack.go

@@ -7,7 +7,7 @@ import (
 	"strconv"
 	"strings"
 
-	pkgerrors "github.com/pkg/errors" //nolint:depguard // Legacy code requires deprecated package.
+	pkgerrors "github.com/pkg/errors" //nolint:gomodguard // Legacy code requires deprecated package.
 )
 
 type FrameInfo struct {

errors/context_map.go

@@ -6,7 +6,7 @@ import (
 	"io"
 
 	"github.com/mailgun/holster/v4/callstack"
-	pkgerrors "github.com/pkg/errors" //nolint:depguard // Legacy code requires deprecated package.
+	pkgerrors "github.com/pkg/errors" //nolint:gomodguard // Legacy code requires deprecated package.
 )
 
 // Implements the `error` `causer` and `Contexter` interfaces

errors/errors.go

@@ -96,7 +96,7 @@ import (
 	"io"
 
 	stack "github.com/mailgun/holster/v4/callstack"
-	pkgerrors "github.com/pkg/errors" //nolint:depguard // Legacy code requires deprecated package.
+	pkgerrors "github.com/pkg/errors" //nolint:gomodguard // Legacy code requires deprecated package.
 	"github.com/sirupsen/logrus"
 )
 

errors/example_test.go

@@ -4,7 +4,7 @@ import (
 	"fmt"
 
 	"github.com/mailgun/holster/v4/errors"
-	pkgerrors "github.com/pkg/errors" //nolint:depguard // Legacy code requires deprecated package.
+	pkgerrors "github.com/pkg/errors" //nolint:gomodguard // Legacy code requires deprecated package.
 )
 
 func ExampleNew() {

go.mod

@@ -11,24 +11,26 @@ require (
 	github.com/hashicorp/consul/api v1.15.2
 	github.com/hashicorp/go-hclog v1.3.1
 	github.com/hashicorp/memberlist v0.5.0
+	github.com/mailgun/errors v0.1.5
 	github.com/miekg/dns v1.1.50
 	github.com/pkg/errors v0.9.1
 	github.com/prometheus/client_golang v1.13.0
 	github.com/sirupsen/logrus v1.9.2
-	github.com/stretchr/testify v1.8.3
+	github.com/stretchr/testify v1.8.4
 	github.com/uptrace/opentelemetry-go-extra/otellogrus v0.2.1
 	go.etcd.io/etcd/api/v3 v3.5.5
 	go.etcd.io/etcd/client/v3 v3.5.5
+	go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.43.0
 	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.42.0
-	go.opentelemetry.io/otel v1.16.0
+	go.opentelemetry.io/otel v1.17.0
 	go.opentelemetry.io/otel/exporters/jaeger v1.16.0
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.16.0
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.16.0
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.16.0
 	go.opentelemetry.io/otel/sdk v1.16.0
-	go.opentelemetry.io/otel/trace v1.16.0
-	golang.org/x/net v0.8.0
-	google.golang.org/grpc v1.55.0
+	go.opentelemetry.io/otel/trace v1.17.0
+	golang.org/x/net v0.14.0
+	google.golang.org/grpc v1.57.0
 	gopkg.in/yaml.v3 v3.0.1
 )
 
@@ -71,16 +73,18 @@ require (
 	github.com/uptrace/opentelemetry-go-extra/otelutil v0.2.1 // indirect
 	go.etcd.io/etcd/client/pkg/v3 v3.5.5 // indirect
 	go.opentelemetry.io/otel/exporters/otlp/internal/retry v1.16.0 // indirect
-	go.opentelemetry.io/otel/metric v1.16.0 // indirect
+	go.opentelemetry.io/otel/metric v1.17.0 // indirect
 	go.opentelemetry.io/proto/otlp v0.19.0 // indirect
 	go.uber.org/atomic v1.9.0 // indirect
 	go.uber.org/multierr v1.8.0 // indirect
 	go.uber.org/zap v1.21.0 // indirect
 	golang.org/x/mod v0.8.0 // indirect
-	golang.org/x/sys v0.8.0 // indirect
-	golang.org/x/text v0.9.0 // indirect
+	golang.org/x/sys v0.11.0 // indirect
+	golang.org/x/text v0.12.0 // indirect
 	golang.org/x/tools v0.6.0 // indirect
-	google.golang.org/genproto v0.0.0-20230306155012-7f2fa6fef1f4 // indirect
-	google.golang.org/protobuf v1.30.0 // indirect
+	google.golang.org/genproto v0.0.0-20230526161137-0005af68ea54 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20230525234035-dd9d682886f9 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20230526203410-71b5a4ffd15e // indirect
+	google.golang.org/protobuf v1.31.0 // indirect
 	gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 // indirect
 )