From e504aafa11adfa2677d5e1907538e01a0a53158e Mon Sep 17 00:00:00 2001
From: Jim Clark <slimslenderslacks@gmail.com>
Date: Sun, 14 May 2023 21:30:59 -0700
Subject: [PATCH] flake plus docker cli metadata

---
 Dockerfile   | 43 +++++++++++++++++++++++++-----------------
 dev/user.clj | 16 ++++++++--------
 flake.nix    |  4 +++-
 main.go      | 53 ++++++++++++++++++++++++++++++++++------------------
 4 files changed, 72 insertions(+), 44 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index cac3567..353065a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,20 +1,29 @@
-FROM golang:1.19-alpine AS build
+# syntax = docker/dockerfile:1.4
+FROM nixos/nix:latest AS builder
+
+WORKDIR /tmp/build
+RUN mkdir /tmp/nix-store-closure
+
+RUN \
+    --mount=type=cache,target=/nix,from=nixos/nix:latest,source=/nix \
+    --mount=type=cache,target=/root/.cache \
+    --mount=type=bind,target=/tmp/build \
+    <<EOF 
+  ls -l /nix/store | wc
+  nix \
+    --extra-experimental-features "nix-command flakes" \
+    --extra-substituters "http://host.docker.internal?priority=10" \
+    --option filter-syscalls false \
+    --show-trace \
+    --log-format raw \
+    build . --out-link /tmp/output/result
+  cp -R $(nix-store -qR /tmp/output/result) /tmp/nix-store-closure
+EOF
+
+FROM scratch
 
 WORKDIR /app
 
-COPY go.mod ./
-COPY go.sum ./
-
-RUN go mod download
-
-COPY main.go ./
-COPY docker/ ./docker/
-COPY babashka/ ./babashka/
-
-RUN CGO_ENABLED=0 go build -ldflags "-s -w" -o babashka-pod-docker
-
-FROM alpine:3.17
-ARG version
-COPY repository/ /root/.babashka/pods/repository
-COPY --from=build /app/babashka-pod-docker /root/.babashka/pods/repository/docker/babashka-pod-docker/0.1.0
-RUN chmod 755 /root/.babashka/pods/repository/docker/babashka-pod-docker/0.1.0/babashka-pod-docker
+COPY --from=builder /tmp/nix-store-closure /nix/store
+COPY --from=builder /tmp/output/ /app/
+ENTRYPOINT ["/app/result/bin/babashka-pod-docker"]
diff --git a/dev/user.clj b/dev/user.clj
index 9d09397..b97a3c3 100644
--- a/dev/user.clj
+++ b/dev/user.clj
@@ -24,9 +24,11 @@
 
 (comment
   (pods/load-pod 'docker.tools "0.1.0")
+  (pods/load-pod "result/bin/babashka-pod-docker")
 
   (require '[docker.tools :as docker])
 
+  (pods/unload-pod {:pod/id "docker.tools"})
 
 ;; parse image names using github.com/docker/distribution
 ;; turns golang structs into clojure maps
@@ -39,18 +41,17 @@
     ;; invalid reference format
       (println (.getMessage e))))
 
-
 ;; parse dockerfiles using github.com/moby/buildkit
 ;; returns the Result struct transformed to a clojure map
   (docker/parse-dockerfile "FROM \\\n    gcr.io/whatever:tag\nCMD [\"run\"]")
 
-
 ;; run sbom generation on local image
-  (docker/sbom "vonwig/clojure-base:jdk17" (fn [event] (println event)))
+  (docker/sbom "mongo@sha256:9c8a0a019671ed7d402768d4df6dddcc898828e21e9f7b90a34b55fe8ca676ac"
+               (fn [event]
+                   (println "event " event)))
 
-
-  (docker/hashes "vonwig/malware1:latest" (fn [event] (println event)))
-  )
+  (docker/hashes "vonwig/malware1:latest"
+                 (fn [event] (println event))))
 
 (defn generate-sbom
   [image]
@@ -69,5 +70,4 @@
    "docker.tools/generate-sbom"
    ["ubuntu:latest" "" ""]
    {})
-  (generate-sbom "alpine")
-  )
+  (generate-sbom "alpine"))
diff --git a/flake.nix b/flake.nix
index d9c835e..4ea6ab7 100644
--- a/flake.nix
+++ b/flake.nix
@@ -24,7 +24,9 @@
       in
       {
         devShells.default = pkgs.devshell.mkShell {
-          packages = with pkgs; [ go gotools golangci-lint gopls gopkgs go-outline gomod2nix.packages.${system}.default clojure clojure-lsp temurin-bin neovim];
+          packages = with pkgs; [ go gotools golangci-lint gopls gopkgs go-outline gomod2nix.packages.${system}.default 
+	                          (clojure.override { jdk = temurin-bin; })
+				  clojure-lsp temurin-bin neovim];
           commands = [
             {
               name = "update-gomod2nix";
diff --git a/main.go b/main.go
index 094eb9f..a487aae 100644
--- a/main.go
+++ b/main.go
@@ -3,6 +3,8 @@ package main
 import (
 	"babashka-pod-docker/babashka"
 	"babashka-pod-docker/docker"
+	"fmt"
+	"os"
 
 	"github.com/atomist-skills/go-skill"
 	"github.com/sirupsen/logrus"
@@ -10,27 +12,42 @@ import (
 
 func main() {
 	skill.Log.SetLevel(logrus.ErrorLevel)
-	for {
-		message, err := babashka.ReadMessage()
-		if err != nil {
-			babashka.WriteErrorResponse(message, err)
-			continue
-		}
 
-		res, err := docker.ProcessMessage(message)
-		if err != nil {
-			babashka.WriteErrorResponse(message, err)
-			continue
-		}
+	args := os.Args
 
-		describeres, ok := res.(*babashka.DescribeResponse)
-		if ok {
-			babashka.WriteDescribeResponse(describeres)
-			continue
-		}
+	if len(args) < 2 {
+		args = append(os.Args, "pod")
+	}
 
-		if res != "running" {
-			babashka.WriteInvokeResponse(message, res)
+	switch args[1] {
+
+	case "docker-cli-plugin-metadata":
+		metadata := `{"SchemaVersion": "0.1.0", "Vendor": "Docker Inc.", "Version": "v0.0.1", "ShortDescription": "Docker Pod"}`
+		fmt.Println(metadata)
+
+	case "pod":
+		for {
+			message, err := babashka.ReadMessage()
+			if err != nil {
+				babashka.WriteErrorResponse(message, err)
+				continue
+			}
+
+			res, err := docker.ProcessMessage(message)
+			if err != nil {
+				babashka.WriteErrorResponse(message, err)
+				continue
+			}
+
+			describeres, ok := res.(*babashka.DescribeResponse)
+			if ok {
+				babashka.WriteDescribeResponse(describeres)
+				continue
+			}
+
+			if res != "running" {
+				babashka.WriteInvokeResponse(message, res)
+			}
 		}
 	}
 }