feat: implement pull event parsing

Author: silenium-dev

.gitignore

@@ -0,0 +1,2 @@
+.idea/
+*.iml

examples/pull/main.go

@@ -0,0 +1,27 @@
+package main
+
+import (
+	"context"
+	"docker-wrapper/pkg/client"
+	"github.com/distribution/reference"
+	client2 "github.com/docker/docker/client"
+)
+
+func main() {
+	cli, err := client.New(client2.FromEnv)
+	if err != nil {
+		panic(err)
+	}
+	//ref, err := reference.ParseDockerRef("quay.io/prometheus/node-exporter@sha256:a25fbdaa3e4d03e0d735fd03f231e9a48332ecf40ca209b2f103b1f970d1cde0")
+	ref, err := reference.ParseDockerRef("confluentinc/cp-kafka:latest")
+	if err != nil {
+		panic(err)
+	}
+	eventChan, err := cli.Pull(context.Background(), ref)
+	if err != nil {
+		panic(err)
+	}
+	for event := range eventChan {
+		println(event.String())
+	}
+}

go.mod

@@ -0,0 +1,34 @@
+module docker-wrapper
+
+go 1.24
+
+require (
+	github.com/containerd/errdefs v1.0.0
+	github.com/distribution/reference v0.6.0
+	github.com/docker/docker v25.0.10+incompatible
+	github.com/docker/go-units v0.5.0
+	github.com/opencontainers/go-digest v1.0.0
+)
+
+require (
+	github.com/Microsoft/go-winio v0.6.2 // indirect
+	github.com/containerd/log v0.1.0 // indirect
+	github.com/docker/go-connections v0.5.0 // indirect
+	github.com/felixge/httpsnoop v1.0.4 // indirect
+	github.com/go-logr/logr v1.4.3 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/moby/term v0.5.2 // indirect
+	github.com/morikuni/aec v1.0.0 // indirect
+	github.com/opencontainers/image-spec v1.1.1 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	go.opentelemetry.io/auto/sdk v1.1.0 // indirect
+	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.62.0 // indirect
+	go.opentelemetry.io/otel v1.37.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.37.0 // indirect
+	go.opentelemetry.io/otel/metric v1.37.0 // indirect
+	go.opentelemetry.io/otel/trace v1.37.0 // indirect
+	golang.org/x/sys v0.34.0 // indirect
+	golang.org/x/time v0.12.0 // indirect
+	gotest.tools/v3 v3.5.2 // indirect
+)

go.sum

@@ -0,0 +1,120 @@
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+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gotest.tools/v3 v3.5.2 h1:7koQfIKdy+I8UTetycgUqXWSDwpgv193Ka+qRsmBY8Q=
+gotest.tools/v3 v3.5.2/go.mod h1:LtdLGcnqToBH83WByAAi/wiwSFCArdFIUV/xxN4pcjA=

pkg/client/client.go

@@ -0,0 +1,30 @@
+package client
+
+import (
+	"github.com/distribution/reference"
+	"github.com/docker/docker/api/types/registry"
+	"github.com/docker/docker/client"
+)
+
+type AuthProvider interface {
+	AuthConfig(named reference.Named) registry.AuthConfig
+}
+
+type Client struct {
+	*client.Client
+	authProvider AuthProvider
+}
+
+func New(opts ...client.Opt) (*Client, error) {
+	cli, err := client.NewClientWithOpts(opts...)
+	if err != nil {
+		return nil, err
+	}
+	return &Client{
+		Client: cli,
+	}, nil
+}
+
+func (c *Client) Close() error {
+	return c.Client.Close()
+}

pkg/client/pull.go

@@ -0,0 +1,26 @@
+package client
+
+import (
+	"context"
+	"docker-wrapper/pkg/client/pull"
+	"docker-wrapper/pkg/client/pull/events"
+	"github.com/distribution/reference"
+	"github.com/docker/docker/api/types"
+	"github.com/docker/docker/api/types/registry"
+)
+
+func (c *Client) Pull(ctx context.Context, ref reference.Named) (chan events.PullEvent, error) {
+	var encodedAuth string
+	var err error
+	if c.authProvider != nil {
+		encodedAuth, err = registry.EncodeAuthConfig(c.authProvider.AuthConfig(ref))
+		if err != nil {
+			return nil, err
+		}
+	}
+	reader, err := c.Client.ImagePull(ctx, ref.String(), types.ImagePullOptions{RegistryAuth: encodedAuth})
+	if err != nil {
+		return nil, err
+	}
+	return pull.ParseStream(ctx, reader), nil
+}

pkg/client/pull/base/progress.go

@@ -0,0 +1,15 @@
+package base
+
+// PullProgressEvent represents events returned from image pulling
+type PullProgressEvent struct {
+	ID             string `json:"id"`
+	Status         string `json:"status"`
+	Error          string `json:"error,omitempty"`
+	Progress       string `json:"progress,omitempty"`
+	ProgressDetail struct {
+		Current    int    `json:"current"`
+		Total      int    `json:"total"`
+		HideCounts bool   `json:"hidecounts,omitempty"`
+		Units      string `json:"units,omitempty"`
+	} `json:"progressDetail"`
+}

pkg/client/pull/events/already_exists.go

@@ -0,0 +1,17 @@
+package events
+
+import "fmt"
+
+type AlreadyExists struct {
+	LayerBase
+}
+
+func (a *AlreadyExists) String() string {
+	return fmt.Sprintf("[%s] already exists", a.id)
+}
+
+func (a *AlreadyExists) LayerId() string {
+	return a.id
+}
+
+const AlreadyExistsStatus = "Already exists"

pkg/client/pull/events/digest.go

@@ -0,0 +1,14 @@
+package events
+
+import (
+	"fmt"
+	"github.com/opencontainers/go-digest"
+)
+
+type Digest struct {
+	Digest digest.Digest
+}
+
+func (d *Digest) String() string {
+	return fmt.Sprintf("Digest: %s", d.Digest.String())
+}

pkg/client/pull/events/download_complete.go

@@ -0,0 +1,13 @@
+package events
+
+import "fmt"
+
+type DownloadComplete struct {
+	LayerBase
+}
+
+func (d *DownloadComplete) String() string {
+	return fmt.Sprintf("[%s] download complete", d.LayerId())
+}
+
+const DownloadCompleteStatus = "Download complete"