Add manifest feature

Signed-off-by: divyansh42 <diagrawa@redhat.com>

.github/workflows/multiarch.yml

@@ -20,7 +20,6 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        arch: [ amd64, i386, arm64v8 ]
         install_latest: [ true, false ]
 
     steps:
@@ -45,8 +44,7 @@ jobs:
         run: |
           cat > Containerfile<<EOF
 
-          ARG ARCH
-          FROM docker.io/\${ARCH}/alpine:3.14
+          FROM docker.io/alpine:3.14
 
           RUN echo "hello world"
 
@@ -59,8 +57,7 @@ jobs:
         with:
           image: ${{ env.IMAGE_NAME }}
           tags: ${{ env.IMAGE_TAG }}
-          arch: ${{ matrix.arch }}
-          build-args: ARCH=${{ matrix.arch }}
+          archs: amd64, ppc64le, arm64
           containerfiles: |
             ./Containerfile
 
@@ -83,6 +80,10 @@ jobs:
         run: |
           podman run --rm ${{ steps.build_image_multiarch.outputs.image }}:${{ env.IMAGE_TAG }}
 
+      - name: Check manifest
+        run: |
+          buildah manifest inspect ${{ steps.build_image_multiarch.outputs.image }}:${{ env.IMAGE_TAG }}
+
   build-multiplatform-containerfile:
     name: Build multi-platform image using Containerfile
     env:
@@ -91,7 +92,6 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        platform: [ "linux/amd64", "linux/arm64/v8" ]
         install_latest: [ true, false ]
 
     steps:
@@ -129,7 +129,7 @@ jobs:
         with:
           image: ${{ env.IMAGE_NAME }}
           tags: ${{ env.IMAGE_TAG }}
-          platform: ${{ matrix.platform }}
+          platforms: linux/amd64, linux/ppc64le
           containerfiles: |
             ./Containerfile
 
@@ -142,11 +142,10 @@ jobs:
       - name: Check images created
         run: buildah images | grep '${{ env.IMAGE_NAME }}'
 
-      - name: Check image metadata
+      - name: Check manifest
         run: |
           set -x
-          buildah inspect ${{ steps.build_image_multiplatform.outputs.image }}:${{ env.IMAGE_TAG }} | jq ".OCIv1.architecture"
-          buildah inspect ${{ steps.build_image_multiplatform.outputs.image }}:${{ env.IMAGE_TAG }} | jq ".Docker.architecture"
+          buildah manifest inspect ${{ steps.build_image_multiplatform.outputs.image }}:${{ env.IMAGE_TAG }}
 
       - name: Run image
         run: |
@@ -160,7 +159,6 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        arch: [ amd64, i386, arm64v8 ]
         install_latest: [ true, false ]
 
     steps:
@@ -230,8 +228,7 @@ jobs:
           image: ${{ env.IMAGE_NAME }}
           tags: ${{ env.IMAGE_TAG }}
           base-image: 'registry.access.redhat.com/openjdk/openjdk-11-rhel7'
-          arch: ${{ matrix.arch }}
-          build-args: ARCH=${{ matrix.arch }}
+          archs: amd64, i386, ppc64le
           # To avoid hardcoding a particular version of the binary.
           content: |
             ./spring-petclinic/target/spring-petclinic-*.jar
@@ -251,8 +248,7 @@ jobs:
       - name: Check images created
         run: buildah images | grep '${{ env.IMAGE_NAME }}'
 
-      - name: Check image metadata
+      - name: Check manifest
         run: |
           set -x
-          buildah inspect ${{ steps.build_image_multiarch.outputs.image }}:${{ env.IMAGE_TAG }} | jq ".OCIv1.architecture"
-          buildah inspect ${{ steps.build_image_multiarch.outputs.image }}:${{ env.IMAGE_TAG }} | jq ".Docker.architecture"
+          buildah manifest inspect ${{ steps.build_image_multiarch.outputs.image }}:${{ env.IMAGE_TAG }}

action.yml

@@ -54,16 +54,24 @@ inputs:
     default: 'false'
     required: false
   arch:
-    description: 'Label the image with this ARCH, instead of defaulting to the host architecture.'
+    description:
+      'Label the image with this ARCH, instead of defaulting to the host architecture'
     required: false
   archs:
-    description: 'Alias for "arch". "arch" takes precedence if both are set.'
+    description: |
+      'Same as input 'arch', use this for multiple architectures.
+      Seperate them by a comma'
     required: false
   platform:
     description: |
       Label the image with this PLATFORM, instead of defaulting to the host platform.
       Only supported for containerfile builds.
     required: false
+  platforms:
+    description: |
+      'Same as input 'platform', use this for multiple platforms.
+      Seperate them by a comma'
+    required: false
   extra-args:
     description: |
       Extra args to be passed to buildah bud.

package.json

@@ -14,7 +14,8 @@
     "compile": "tsc -p .",
     "bundle": "ncc build src/index.ts --source-map --minify",
     "clean": "rm -rf out/ dist/",
-    "lint": "eslint . --max-warnings=0"
+    "lint": "eslint . --max-warnings=0",
+    "generate-ios": "npx action-io-generator -w -o ./src/generated/inputs-outputs.ts"
   },
   "keywords": [],
   "author": "Red Hat",

src/buildah.ts

@@ -21,12 +21,15 @@ export interface BuildahConfigSettings {
 interface Buildah {
     buildUsingDocker(
         image: string, context: string, containerFiles: string[], buildArgs: string[],
-        useOCI: boolean, arch: string, platform: string, labels: string[], layers: string, extraArgs: string[]
+        useOCI: boolean, labels: string[], layers: string,
+        extraArgs: string[], arch?: string, platform?: string,
     ): Promise<CommandResult>;
     from(baseImage: string): Promise<CommandResult>;
     config(container: string, setting: BuildahConfigSettings): Promise<CommandResult>;
     copy(container: string, contentToCopy: string[]): Promise<CommandResult | undefined>;
     commit(container: string, newImageName: string, useOCI: boolean): Promise<CommandResult>;
+    manifestCreate(manifest: string): Promise<void>;
+    manifestAdd(manifest: string, imageName: string, tags: string[]): Promise<void>;
 }
 
 export class BuildahCli implements Buildah {
@@ -64,7 +67,8 @@ export class BuildahCli implements Buildah {
 
     async buildUsingDocker(
         image: string, context: string, containerFiles: string[], buildArgs: string[],
-        useOCI: boolean, arch: string, platform: string, labels: string[], layers: string, extraArgs: string[]
+        useOCI: boolean, labels: string[], layers: string,
+        extraArgs: string[], arch?: string, platform?: string
     ): Promise<CommandResult> {
         const args: string[] = [ "bud" ];
         if (arch) {
@@ -178,6 +182,21 @@ export class BuildahCli implements Buildah {
         return this.execute(args);
     }
 
+    async manifestCreate(manifest: string): Promise<void> {
+        const args: string[] = [ "manifest", "create" ];
+        args.push(manifest);
+        core.info(`Creating manifest ${manifest}`);
+        await this.execute(args);
+    }
+
+    async manifestAdd(manifest: string, image: string): Promise<void> {
+        const args: string[] = [ "manifest", "add" ];
+        args.push(manifest);
+        args.push(image);
+        core.info(`Adding image "${image}" to the manifest.`);
+        await this.execute(args);
+    }
+
     private static convertArrayToStringArg(args: string[]): string {
         let arrayAsString = "[";
         args.forEach((arg) => {

src/generated/inputs-outputs.ts

@@ -1,13 +1,14 @@
 // This file was auto-generated by action-io-generator. Do not edit by hand!
 export enum Inputs {
     /**
-     * Label the image with this ARCH, instead of defaulting to the host architecture.
+     * Label the image with this ARCH, instead of defaulting to the host architecture
      * Required: false
      * Default: None.
      */
     ARCH = "arch",
     /**
-     * Alias for "arch". "arch" takes precedence if both are set.
+     * 'Same as input 'arch', use this for multiple architectures.
+     * Seperate them by a comma'
      * Required: false
      * Default: None.
      */
@@ -98,6 +99,13 @@ export enum Inputs {
      * Default: None.
      */
     PLATFORM = "platform",
+    /**
+     * 'Same as input 'platform', use this for multiple platforms.
+     * Seperate them by a comma'
+     * Required: false
+     * Default: None.
+     */
+    PLATFORMS = "platforms",
     /**
      * The port to expose when running containers based on image
      * Required: false

src/index.ts

@@ -10,7 +10,7 @@ import { Inputs, Outputs } from "./generated/inputs-outputs";
 import { BuildahCli, BuildahConfigSettings } from "./buildah";
 import {
     getArch, getPlatform, getContainerfiles, getInputList, splitByNewline,
-    isFullImageName, getFullImageName,
+    isFullImageName, getFullImageName, getTagSuffix,
 } from "./utils";
 
 export async function run(): Promise<void> {
@@ -55,34 +55,56 @@ export async function run(): Promise<void> {
     const newImage = getFullImageName(image, tagsList[0]);
     const useOCI = core.getInput(Inputs.OCI) === "true";
 
-    const arch = getArch();
-    const platform = getPlatform();
+    const archs = getArch();
+    const platforms = getPlatform();
 
-    if (arch && platform) {
+    // core.debug(`Archs ---> ${archs.toString()}`);
+    // core.debug(`Platforms ---> ${platforms.toString()}`);
+
+    if ((archs.length > 0) && (platforms.length > 0)) {
         throw new Error("The --platform option may not be used in combination with the --arch option.");
     }
 
     if (containerFiles.length !== 0) {
-        await doBuildUsingContainerFiles(cli, newImage, workspace, containerFiles, useOCI, arch, platform, labelsList);
+        await doBuildUsingContainerFiles(cli, newImage, workspace, containerFiles, useOCI,
+            archs, platforms, labelsList);
     }
     else {
-        if (platform) {
+        if (platforms.length > 0) {
             throw new Error("The --platform option is not supported for builds without containerfiles.");
         }
-        await doBuildFromScratch(cli, newImage, useOCI, arch, labelsList);
+        await doBuildFromScratch(cli, newImage, useOCI, archs, labelsList);
     }
 
-    if (tagsList.length > 1) {
+    if ((archs.length > 0) || (platforms.length > 0)) {
+        core.info(`Creating manifest with tag${tagsList.length !== 1 ? "s" : ""} "${tagsList.join(", ")}"`);
+        for (const tag of tagsList) {
+            const manifestName = getFullImageName(image, tag);
+            await cli.manifestCreate(manifestName);
+
+            for (const arch of archs) {
+                const tagSuffix = getTagSuffix(arch);
+                await cli.manifestAdd(manifestName, `${newImage}-${tagSuffix}`);
+            }
+
+            for (const platform of platforms) {
+                const tagSuffix = getTagSuffix(platform);
+                await cli.manifestAdd(manifestName, `${newImage}-${tagSuffix}`);
+            }
+        }
+    }
+    else if (tagsList.length > 1) {
         await cli.tag(image, tagsList);
     }
+
     core.setOutput(Outputs.IMAGE, image);
     core.setOutput(Outputs.TAGS, tags);
     core.setOutput(Outputs.IMAGE_WITH_TAG, newImage);
 }
 
 async function doBuildUsingContainerFiles(
-    cli: BuildahCli, newImage: string, workspace: string, containerFiles: string[], useOCI: boolean, arch: string,
-    platform: string, labels: string[],
+    cli: BuildahCli, newImage: string, workspace: string, containerFiles: string[], useOCI: boolean, archs: string[],
+    platforms: string[], labels: string[],
 ): Promise<void> {
     if (containerFiles.length === 1) {
         core.info(`Performing build from Containerfile`);
@@ -104,13 +126,36 @@ async function doBuildUsingContainerFiles(
         const lines = splitByNewline(inputExtraArgsStr);
         buildahBudExtraArgs = lines.flatMap((line) => line.split(" ")).map((arg) => arg.trim());
     }
-    await cli.buildUsingDocker(
-        newImage, context, containerFileAbsPaths, buildArgs, useOCI, arch, platform, labels, layers, buildahBudExtraArgs
-    );
+
+    // since multi arch image can not have same tag
+    // therefore, appending arch/platform in the tag
+    if (archs.length > 0 || platforms.length > 0) {
+        for (const arch of archs) {
+            const tagSuffix = getTagSuffix(arch);
+            await cli.buildUsingDocker(
+                `${newImage}-${tagSuffix}`, context, containerFileAbsPaths, buildArgs,
+                useOCI, labels, layers, buildahBudExtraArgs, arch, undefined
+            );
+        }
+
+        for (const platform of platforms) {
+            const tagSuffix = getTagSuffix(platform);
+            await cli.buildUsingDocker(
+                `${newImage}-${tagSuffix}`, context, containerFileAbsPaths, buildArgs,
+                useOCI, labels, layers, buildahBudExtraArgs, undefined, platform
+            );
+        }
+    }
+    else {
+        await cli.buildUsingDocker(
+            newImage, context, containerFileAbsPaths, buildArgs,
+            useOCI, labels, layers, buildahBudExtraArgs
+        );
+    }
 }
 
 async function doBuildFromScratch(
-    cli: BuildahCli, newImage: string, useOCI: boolean, arch: string, labels: string[],
+    cli: BuildahCli, newImage: string, useOCI: boolean, archs: string[], labels: string[],
 ): Promise<void> {
     core.info(`Performing build from scratch`);
 
@@ -124,17 +169,35 @@ async function doBuildFromScratch(
     const container = await cli.from(baseImage);
     const containerId = container.output.replace("\n", "");
 
-    const newImageConfig: BuildahConfigSettings = {
-        entrypoint,
-        port,
-        workingdir: workingDir,
-        envs,
-        arch,
-        labels,
-    };
-    await cli.config(containerId, newImageConfig);
-    await cli.copy(containerId, content);
-    await cli.commit(containerId, newImage, useOCI);
+    if (archs.length > 0) {
+        for (const arch of archs) {
+            const tagSuffix = getTagSuffix(arch);
+            const newImageConfig: BuildahConfigSettings = {
+                entrypoint,
+                port,
+                workingdir: workingDir,
+                envs,
+                arch,
+                labels,
+            };
+            await cli.config(containerId, newImageConfig);
+            await cli.copy(containerId, content);
+            await cli.commit(containerId, `${newImage}-${tagSuffix}`, useOCI);
+        }
+    }
+    else {
+        const newImageConfig: BuildahConfigSettings = {
+            entrypoint,
+            port,
+            workingdir: workingDir,
+            envs,
+            labels,
+        };
+        await cli.config(containerId, newImageConfig);
+        await cli.copy(containerId, content);
+        await cli.commit(containerId, newImage, useOCI);
+    }
+
 }
 
 run().catch(core.setFailed);

src/utils.ts

@@ -65,24 +65,50 @@ export function splitByNewline(s: string): string[] {
     return s.split(/\r?\n/);
 }
 
-export function getArch(): string {
-    // 'arch' should be used over 'archs', see https://github.com/redhat-actions/buildah-build/issues/60
-    const archs = core.getInput(Inputs.ARCHS);
+export function getArch(): string[] {
+    const archs = getCommaSeperatedInput(Inputs.ARCHS);
+
     const arch = core.getInput(Inputs.ARCH);
 
-    if (arch && archs) {
+    if (arch && archs.length > 0) {
         core.warning(
             `Both "${Inputs.ARCH}" and "${Inputs.ARCHS}" inputs are set. `
-            + `Please use only one of these two inputs, as they are aliases of one another. `
-            + `"${Inputs.ARCH}" takes precedence.`
+            + `Please use "${Inputs.ARCH}" if you want to provide multiple `
+            + `ARCH else use ${Inputs.ARCH}". "${Inputs.ARCHS}" takes preference.`
         );
     }
 
-    return arch || archs;
+    if (archs.length > 0) {
+        return archs;
+    }
+    else if (arch) {
+        return [ arch ];
+    }
+    return [];
 }
 
-export function getPlatform(): string {
-    return core.getInput(Inputs.PLATFORM);
+export function getPlatform(): string[] {
+    const platform = core.getInput(Inputs.PLATFORM);
+    const platforms = getCommaSeperatedInput(Inputs.PLATFORMS);
+
+    if (platform && platforms.length > 0) {
+        core.warning(
+            `Both "${Inputs.PLATFORM}" and "${Inputs.PLATFORMS}" inputs are set. `
+            + `Please use "${Inputs.PLATFORMS}" if you want to provide multiple `
+            + `PLATFORM else use ${Inputs.PLATFORM}". "${Inputs.PLATFORMS}" takes preference.`
+        );
+    }
+
+    if (platforms.length > 0) {
+        core.debug("return platforms");
+        return platforms;
+    }
+    else if (platform) {
+        core.debug("return platform");
+        return [ platform ];
+    }
+    core.debug("return empty");
+    return [];
 }
 
 export function getContainerfiles(): string[] {
@@ -115,6 +141,20 @@ export function getInputList(name: string): string[] {
         );
 }
 
+export function getCommaSeperatedInput(name: string): string[] {
+    const items = core.getInput(name);
+    if (items.length === 0) {
+        core.debug("empty");
+        return [];
+    }
+    const splitItems = items.split(",");
+    return splitItems
+        .reduce<string[]>(
+            (acc, line) => acc.concat(line).map((item) => item.trim()),
+            [],
+        );
+}
+
 export function isFullImageName(image: string): boolean {
     return image.indexOf(":") > 0;
 }
@@ -125,3 +165,7 @@ export function getFullImageName(image: string, tag: string): string {
     }
     return `${image}:${tag}`;
 }
+
+export function getTagSuffix(item: string): string {
+    return item.replace(/[^a-zA-Z0-9 ]/g, "");
+}