【Tekton】Cloud Native Buildpacksの-cache-dirオプションを使ってみる

スポンサーリンク

はじめに

TektonでCloud Native Buildpacksを使ってビルドするときに、-cache-dirを使ってキャッシュを利用してみたいと思います。

TektonでCloud Native Buildpacksを使ってビルドする方法については下記を参照してください。

【Tekton】Cloud Native Buildpacksでビルドする
はじめにTektonでCloud Native Buildpacksを使ってビルドをしてみます。TektonとCloud Native Buildpacksの基本的なことについては下記を参照してください。TektonでCloud ...

-cache-dirオプション

Cloud Native Buildpacksの/cnb/lifecycle/creatorコマンドを使う場合、-cache-dirでキャッシュを格納するディレクトリを指定することができます。

spec/platform.md at platform/v0.9 · buildpacks/spec
Specification for Cloud Native Buildpacks. Contribute to buildpacks/spec development by creating an account on GitHub.

いつ使うデータがキャッシュされているか

この-cache-dirに格納されているデータがいつ使われているかですが、BuildpacksのドキュメントやTektonのcatalogには下記のように記載されています。

Directory where cache is stored (OPTIONAL)

Tekton · Cloud Native Buildpacks
Tekton is an open-source CI/CD system platform implementation running on k8s. There are two Tekton tasks maintained by the CNB project, both of which use the li...

Directory where cache is stored (when no cache image is provided).

catalog/buildpacks.yaml at main · tektoncd/catalog
Catalog of shared Tasks and Pipelines. Contribute to tektoncd/catalog development by creating an account on GitHub.

ここを読む限りcreatorで使うデータをキャッシュしているように読み取れます。しかし、creatorが実行するanalyzerdetectorrestorerbuilderexporterのオプションを見ると、-cache-dirオプションはrestorerexporterにしかありません。

【Cloud Native Buildpacks】Lifecycleとは
はじめにCloud Native Buildpacksのコンポーネントから、Lifecycleについてどんなものなのか紹介していきます。Cloud Native Buildpacksの超基本的なことについては下記を参照してください。...

つまり、buildpacksでビルドしているときに使う依存関係をキャッシュしているわけではなさそうです。

このあと、実際に動かして確認してみますが、動かしてみた感じ構築したlayerをキャッシュしているようです。

Gradleアプリをビルドしてみる

Paketo Buildpacksが用意しているGradleのサンプルアプリで、実際に-cache-dirを使ってビルドしてみます。

samples/java/gradle at main · paketo-buildpacks/samples
A collection of samples. Contribute to paketo-buildpacks/samples development by creating an account on GitHub.

用意するファイルは下記の通りです。

.
├── buildpacks.yaml
├── git-clone.yaml
├── pipeline.yaml
├── pipelinerun1.yaml
├── pipelinerun2.yaml
├── pod.yaml
├── serviceaccount.yaml
└── volume.yaml

Secretの作成

Docker Hubにプッシュするときに必要な認証情報を持つSecretを作成します。

kubectl create secret docker-registry docker-registry \
                    --docker-server=https://index.docker.io/v1/ \
                    --docker-username=<DockerHubのアカウント名> \
                    --docker-password=<DockerHubのパスワード> \
                    --docker-email=<DockerHubのメールアドレス>

ServiceAccontの作成

先ほどのSecretを利用するServiceAccountを作成します(serviceaccount.yaml)。

apiVersion: v1
kind: ServiceAccount
metadata:
  name: buildpacks-service-account
secrets:
- name: docker-user-pass
kubectl apply -f serviceaccount.yaml

PVとPVCの作成

キャッシュとアプリのソースコードを配置するworkspaceのためのPersistentVolumeを作成します(volume.yaml)。

apiVersion: v1
kind: PersistentVolume
metadata:
  name: buildpacks-source-pv
spec:
  capacity:
    storage: 500Mi
  accessModes:
  - ReadWriteOnce
  hostPath:
    path: /tmp
    type: Directory
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: buildpacks-source-pvc
spec:
  accessModes:
  - ReadWriteOnce
  resources:
    requests:
      storage: 500Mi
kubectl apply -f volume.yaml

git-clone Taskの作成

git-clone TaskはCatalogから下記を利用します。

catalog/git-clone.yaml at main · tektoncd/catalog
Catalog of shared Tasks and Pipelines. Contribute to tektoncd/catalog development by creating an account on GitHub.
kubectl apply -f git-clone.yaml

buildpacks Taskの作成

buildpacks TaskはCatalogから下記を利用します。

catalog/buildpacks.yaml at main · tektoncd/catalog
Catalog of shared Tasks and Pipelines. Contribute to tektoncd/catalog development by creating an account on GitHub.
kubectl apply -f buildpacks.yaml

Pipelineの作成

Pipelineを作成します(pipeline.yaml)。

git-clone Taskでソースコードをクローンし、buildpacks Taskでビルドし、最後に結果を表示するPipelineになります。

buildpacks Taskにcacheというworkspaceをわたすことで-cache-dirが使えます。

apiVersion: tekton.dev/v1beta1
kind: Pipeline
metadata:
  name: buildpacks-pipeline
spec:
  params:
  - name: image
    type: string
    description: image URL to push
  workspaces:
  - name: source-workspace
  - name: cache-workspace # -cache-dir用のworkspace
  tasks:
  - name: fetch-repository
    taskRef:
      name: git-clone
    workspaces:
    - name: output
      workspace: source-workspace
    params:
    - name: url
      value: https://github.com/paketo-buildpacks/samples
  - name: build
    taskRef:
      name: buildpacks
    runAfter:
    - fetch-repository
    workspaces:
    - name: source
      workspace: source-workspace
    - name: cache # -cache-dir用のworkspace
      workspace: cache-workspace
    params:
    - name: APP_IMAGE
      value: "$(params.image)"
    - name: SOURCE_SUBPATH
      value: "java/gradle"
    - name: BUILDER_IMAGE
      value: paketobuildpacks/builder:base
    - name: SKIP_RESTORE
      value: "false"
  - name: display-results
    runAfter:
    - build
    taskSpec:
      steps:
      - name: print
        image: docker.io/library/bash:[email protected]:b208215a4655538be652b2769d82e576bc4d0a2bb132144c060efc5be8c3f5d6
        script: |
          #!/usr/bin/env bash
          set -e
          echo "Digest of created app image: $(params.DIGEST)"
      params:
      - name: DIGEST
    params:
    - name: DIGEST
      value: $(tasks.build.results.APP_IMAGE_DIGEST)
kubectl apply -f pipeline.yaml

初回のビルド

PipelineRun(pipelinerun1.yaml)で初回のビルドをします。

apiVersion: tekton.dev/v1beta1
kind: PipelineRun
metadata:
  name: buildpacks-pipeline-run1
spec:
  serviceAccountName: buildpacks-service-account
  pipelineRef:
    name: buildpacks-pipeline
  workspaces:
  - name: source-workspace
    subPath: source
    persistentVolumeClaim:
      claimName: buildpacks-source-pvc
  - name: cache-workspace # -cache-dir用のworkspace
    subPath: cache
    persistentVolumeClaim:
      claimName: buildpacks-source-pvc
  params:
  - name: image
    value: monda00/sample-gradle:v1
kubectl apply -f pipelinerun1.yaml

ログを見てみると、JDKやJREなどビルドに必要な依存関係をダウンロードしていることがわかります。

Contributing to layerとなっているので、それぞれでlayerを作成しているのが確認できます。

❯ tkn pr logs buildpacks-pipeline-run1

...

[build : create] ===> ANALYZING
[build : create] Previous image with name "monda00/sample-gradle:v1" not found
[build : create] ===> RESTORING
[build : create] ===> BUILDING
[build : create]
[build : create] Paketo CA Certificates Buildpack 3.2.5
[build : create]   https://github.com/paketo-buildpacks/ca-certificates
[build : create]   Launch Helper: Contributing to layer
[build : create]     Creating /layers/paketo-buildpacks_ca-certificates/helper/exec.d/ca-certificates-helper
[build : create]
[build : create] Paketo BellSoft Liberica Buildpack 9.4.1
[build : create]   https://github.com/paketo-buildpacks/bellsoft-liberica
[build : create]   Build Configuration:
[build : create]     $BP_JVM_JLINK_ARGS           --no-man-pages --no-header-files --strip-debug --compress=1  configure custom link arguments (--output must be omitted)
[build : create]     $BP_JVM_JLINK_ENABLED        false                                                        enables running jlink tool to generate custom JRE
[build : create]     $BP_JVM_TYPE                 JRE                                                          the JVM type - JDK or JRE
[build : create]     $BP_JVM_VERSION              11                                                           the Java version
[build : create]   Launch Configuration:
[build : create]     $BPL_DEBUG_ENABLED           false                                                        enables Java remote debugging support
[build : create]     $BPL_DEBUG_PORT              8000                                                         configure the remote debugging port
[build : create]     $BPL_DEBUG_SUSPEND           false                                                        configure whether to suspend execution until a debugger has attached
[build : create]     $BPL_HEAP_DUMP_PATH                                                                       write heap dumps on error to this path
[build : create]     $BPL_JAVA_NMT_ENABLED        true                                                         enables Java Native Memory Tracking (NMT)
[build : create]     $BPL_JAVA_NMT_LEVEL          summary                                                      configure level of NMT, summary or detail
[build : create]     $BPL_JFR_ARGS                                                                             configure custom Java Flight Recording (JFR) arguments
[build : create]     $BPL_JFR_ENABLED             false                                                        enables Java Flight Recording (JFR)
[build : create]     $BPL_JMX_ENABLED             false                                                        enables Java Management Extensions (JMX)
[build : create]     $BPL_JMX_PORT                5000                                                         configure the JMX port
[build : create]     $BPL_JVM_HEAD_ROOM           0                                                            the headroom in memory calculation
[build : create]     $BPL_JVM_LOADED_CLASS_COUNT  35% of classes                                               the number of loaded classes in memory calculation
[build : create]     $BPL_JVM_THREAD_COUNT        250                                                          the number of threads in memory calculation
[build : create]     $JAVA_TOOL_OPTIONS                                                                        the JVM launch flags
[build : create]     Using buildpack default Java version 11
[build : create]   BellSoft Liberica JDK 11.0.16: Contributing to layer
[build : create]     Downloading from https://github.com/bell-sw/Liberica/releases/download/11.0.16+8/bellsoft-jdk11.0.16+8-linux-amd64.tar.gz
[build : create]     Verifying checksum
[build : create]     Expanding to /layers/paketo-buildpacks_bellsoft-liberica/jdk
[build : create]     Adding 127 container CA certificates to JVM truststore
[build : create]     Writing env.build/JAVA_HOME.override
[build : create]     Writing env.build/JDK_HOME.override
[build : create]   BellSoft Liberica JRE 11.0.16: Contributing to layer
[build : create]     Downloading from https://github.com/bell-sw/Liberica/releases/download/11.0.16+8/bellsoft-jre11.0.16+8-linux-amd64.tar.gz
[build : create]     Verifying checksum

...

[build : create] ===> EXPORTING
[build : create] Adding layer 'paketo-buildpacks/ca-certificates:helper'
[build : create] Adding layer 'paketo-buildpacks/bellsoft-liberica:helper'
[build : create] Adding layer 'paketo-buildpacks/bellsoft-liberica:java-security-properties'
[build : create] Adding layer 'paketo-buildpacks/bellsoft-liberica:jre'
[build : create] Adding layer 'paketo-buildpacks/executable-jar:classpath'
[build : create] Adding layer 'paketo-buildpacks/spring-boot:helper'
[build : create] Adding layer 'paketo-buildpacks/spring-boot:spring-cloud-bindings'
[build : create] Adding layer 'paketo-buildpacks/spring-boot:web-application-type'
[build : create] Adding 5/5 app layer(s)
[build : create] Adding layer 'launcher'
[build : create] Adding layer 'config'
[build : create] Adding layer 'process-types'
[build : create] Adding label 'io.buildpacks.lifecycle.metadata'
[build : create] Adding label 'io.buildpacks.build.metadata'
[build : create] Adding label 'io.buildpacks.project.metadata'
[build : create] Adding label 'org.springframework.boot.version'
[build : create] Setting default process type 'web'
[build : create] Saving monda00/sample-gradle:v1...
[build : create] *** Images (sha256:80e142c664cbde7c1567cd61d91230870dc651488b091d797b85aad564533251):
[build : create]       monda00/sample-gradle:v1
[build : create] Adding cache layer 'paketo-buildpacks/bellsoft-liberica:jdk'
[build : create] Adding cache layer 'paketo-buildpacks/syft:syft'
[build : create] Adding cache layer 'paketo-buildpacks/gradle:application'
[build : create] Adding cache layer 'paketo-buildpacks/gradle:cache'

...

2回目のビルド

タグを更新して、もう一度PipelineRun(pipelinerun2.yaml)でビルドしてみます。

apiVersion: tekton.dev/v1beta1
kind: PipelineRun
metadata:
  name: buildpacks-pipeline-run2
spec:
  serviceAccountName: buildpacks-service-account
  pipelineRef:
    name: buildpacks-pipeline
  workspaces:
  - name: source-workspace
    subPath: source
    persistentVolumeClaim:
      claimName: buildpacks-source-pvc
  - name: cache-workspace # -cache-dir用のworkspace
    subPath: cache
    persistentVolumeClaim:
      claimName: buildpacks-source-pvc
  params:
  - name: image
    value: monda00/sample-gradle:v2 # タグを更新
kubectl apply -f pipelinerun2.yaml

ログを見てみると、restorerで復元したcache layerを使っている部分(Reusing cached layer)もありますが、先ほどもダウンロードしていたhttps://github.com/bell-sw/Liberica/releases/download/11.0.16+8/bellsoft-jre11.0.16+8-linux-amd64.tar.gzをもう一度ダウンロードしているのも確認できます。

❯ tkn pr logs buildpacks-pipeline-run2

...

[build : create] ===> ANALYZING
[build : create] Previous image with name "monda00/sample-gradle:v2" not found
[build : create] Restoring metadata for "paketo-buildpacks/bellsoft-liberica:jdk" from cache
[build : create] Restoring metadata for "paketo-buildpacks/syft:syft" from cache
[build : create] Restoring metadata for "paketo-buildpacks/gradle:application" from cache
[build : create] Restoring metadata for "paketo-buildpacks/gradle:cache" from cache
[build : create] ===> RESTORING
[build : create] Restoring data for "paketo-buildpacks/bellsoft-liberica:jdk" from cache
[build : create] Restoring data for "paketo-buildpacks/syft:syft" from cache
[build : create] Restoring data for "paketo-buildpacks/gradle:application" from cache
[build : create] Restoring data for "paketo-buildpacks/gradle:cache" from cache
[build : create] ===> BUILDING
[build : create]
[build : create] Paketo CA Certificates Buildpack 3.2.5
[build : create]   https://github.com/paketo-buildpacks/ca-certificates
[build : create]   Launch Helper: Contributing to layer
[build : create]     Creating /layers/paketo-buildpacks_ca-certificates/helper/exec.d/ca-certificates-helper
[build : create]
[build : create] Paketo BellSoft Liberica Buildpack 9.4.1
[build : create]   https://github.com/paketo-buildpacks/bellsoft-liberica
[build : create]   Build Configuration:
[build : create]     $BP_JVM_JLINK_ARGS           --no-man-pages --no-header-files --strip-debug --compress=1  configure custom link arguments (--output must be omitted)
[build : create]     $BP_JVM_JLINK_ENABLED        false                                                        enables running jlink tool to generate custom JRE
[build : create]     $BP_JVM_TYPE                 JRE                                                          the JVM type - JDK or JRE
[build : create]     $BP_JVM_VERSION              11                                                           the Java version
[build : create]   Launch Configuration:
[build : create]     $BPL_DEBUG_ENABLED           false                                                        enables Java remote debugging support
[build : create]     $BPL_DEBUG_PORT              8000                                                         configure the remote debugging port
[build : create]     $BPL_DEBUG_SUSPEND           false                                                        configure whether to suspend execution until a debugger has attached
[build : create]     $BPL_HEAP_DUMP_PATH                                                                       write heap dumps on error to this path
[build : create]     $BPL_JAVA_NMT_ENABLED        true                                                         enables Java Native Memory Tracking (NMT)
[build : create]     $BPL_JAVA_NMT_LEVEL          summary                                                      configure level of NMT, summary or detail
[build : create]     $BPL_JFR_ARGS                                                                             configure custom Java Flight Recording (JFR) arguments
[build : create]     $BPL_JFR_ENABLED             false                                                        enables Java Flight Recording (JFR)
[build : create]     $BPL_JMX_ENABLED             false                                                        enables Java Management Extensions (JMX)
[build : create]     $BPL_JMX_PORT                5000                                                         configure the JMX port
[build : create]     $BPL_JVM_HEAD_ROOM           0                                                            the headroom in memory calculation
[build : create]     $BPL_JVM_LOADED_CLASS_COUNT  35% of classes                                               the number of loaded classes in memory calculation
[build : create]     $BPL_JVM_THREAD_COUNT        250                                                          the number of threads in memory calculation
[build : create]     $JAVA_TOOL_OPTIONS                                                                        the JVM launch flags
[build : create]     Using buildpack default Java version 11
[build : create]   BellSoft Liberica JDK 11.0.16: Reusing cached layer
[build : create]   BellSoft Liberica JRE 11.0.16: Contributing to layer
[build : create]     Downloading from https://github.com/bell-sw/Liberica/releases/download/11.0.16+8/bellsoft-jre11.0.16+8-linux-amd64.tar.gz
[build : create]     Verifying checksum

...

[build : create] ===> EXPORTING
[build : create] Adding layer 'paketo-buildpacks/ca-certificates:helper'
[build : create] Adding layer 'paketo-buildpacks/bellsoft-liberica:helper'
[build : create] Adding layer 'paketo-buildpacks/bellsoft-liberica:java-security-properties'
[build : create] Adding layer 'paketo-buildpacks/bellsoft-liberica:jre'
[build : create] Adding layer 'paketo-buildpacks/executable-jar:classpath'
[build : create] Adding layer 'paketo-buildpacks/spring-boot:helper'
[build : create] Adding layer 'paketo-buildpacks/spring-boot:spring-cloud-bindings'
[build : create] Adding layer 'paketo-buildpacks/spring-boot:web-application-type'
[build : create] Adding 5/5 app layer(s)
[build : create] Adding layer 'launcher'
[build : create] Adding layer 'config'
[build : create] Adding layer 'process-types'
[build : create] Adding label 'io.buildpacks.lifecycle.metadata'
[build : create] Adding label 'io.buildpacks.build.metadata'
[build : create] Adding label 'io.buildpacks.project.metadata'
[build : create] Adding label 'org.springframework.boot.version'
[build : create] Setting default process type 'web'
[build : create] Saving monda00/sample-gradle:v2...
[build : create] *** Images (sha256:80e142c664cbde7c1567cd61d91230870dc651488b091d797b85aad564533251):
[build : create]       monda00/sample-gradle:v2
[build : create] Reusing cache layer 'paketo-buildpacks/bellsoft-liberica:jdk'
[build : create] Reusing cache layer 'paketo-buildpacks/syft:syft'
[build : create] Reusing cache layer 'paketo-buildpacks/gradle:application'
[build : create] Reusing cache layer 'paketo-buildpacks/gradle:cache'

キャッシュされたデータを確認する

PersistentVolumeに格納されたキャッシュデータを確認してみます。

下記のpod.yamlでPodにキャッシュ用に使ったPVCをマウントして中身を確認します。

apiVersion: v1
kind: Pod
metadata:
  name: busybox
spec:
  containers:
  - name: busybox
    image: busybox:latest
    args:
      - sleep
      - "999"
    volumeMounts:
    - mountPath: /tmp
      name: volume-pvc
  volumes:
  - name: volume-pvc
    persistentVolumeClaim:
      claimName: buildpacks-source-pvc
kubectl apply -f pod.yaml

コンテナに入り、マウントしたディレクトリを確認してみると、layersディレクトリがキャッシュされており、これがrestorerexporterで使われているようです。

❯ kubectl exec -it busybox -- /bin/sh

/ # cd tmp/cache/

/tmp/cache # ls
committed

/tmp/cache/committed # tar -xvf sha256\:5596f3f49be533ca6384724815f85b3f46ce300fe5ba70cc176de61d0982f497.tar
tar: removing leading '/' from member names
layers
layers/paketo-buildpacks_gradle
layers/paketo-buildpacks_gradle/application
layers/paketo-buildpacks_gradle/application/application.zip

試しにskip-restoreしてみる

restorerをスキップしてみると-cache-dirはどう動くか試してみます。

まずは、pipeline.yamlSKI_RESTOREをtrueにします。

    - name: SKIP_RESTORE
      value: "true"
kubectl apply -f pipeline.yaml

PipelineRun(pipelinerun3.yaml)でビルドしてみます。

apiVersion: tekton.dev/v1beta1
kind: PipelineRun
metadata:
  name: buildpacks-pipeline-run3
spec:
  serviceAccountName: buildpacks-service-account
  pipelineRef:
    name: buildpacks-pipeline
  workspaces:
  - name: source-workspace
    subPath: source
    persistentVolumeClaim:
      claimName: buildpacks-source-pvc
  - name: cache-workspace # -cache-dir用のworkspace
    subPath: cache
    persistentVolumeClaim:
      claimName: buildpacks-source-pvc
  params:
  - name: image
    value: monda00/sample-gradle:v3 # タグを更新
kubectl apply -f pipelinerun3.yaml

ログをみると、restorerがスキップされ、builderの中でReusing cached layerされている箇所がなくなっています。

つまり、リストア(復元)されたlayerがなく、依存関係のダウンロードからビルドを実行しています。

❯ tkn pr logs buildpacks-pipeline-run3

...

[build : create] ===> ANALYZING
[build : create] Previous image with name "monda00/sample-gradle:v3" not found
[build : create] Skipping buildpack layer analysis
[build : create] ===> BUILDING
[build : create]
[build : create] Paketo CA Certificates Buildpack 3.2.5
[build : create]   https://github.com/paketo-buildpacks/ca-certificates
[build : create]   Launch Helper: Contributing to layer
[build : create]     Creating /layers/paketo-buildpacks_ca-certificates/helper/exec.d/ca-certificates-helper
[build : create]
[build : create] Paketo BellSoft Liberica Buildpack 9.4.1
[build : create]   https://github.com/paketo-buildpacks/bellsoft-liberica
[build : create]   Build Configuration:
[build : create]     $BP_JVM_JLINK_ARGS           --no-man-pages --no-header-files --strip-debug --compress=1  configure custom link arguments (--output must be omitted)
[build : create]     $BP_JVM_JLINK_ENABLED        false                                                        enables running jlink tool to generate custom JRE
[build : create]     $BP_JVM_TYPE                 JRE                                                          the JVM type - JDK or JRE
[build : create]     $BP_JVM_VERSION              11                                                           the Java version
[build : create]   Launch Configuration:
[build : create]     $BPL_DEBUG_ENABLED           false                                                        enables Java remote debugging support
[build : create]     $BPL_DEBUG_PORT              8000                                                         configure the remote debugging port
[build : create]     $BPL_DEBUG_SUSPEND           false                                                        configure whether to suspend execution until a debugger has attached
[build : create]     $BPL_HEAP_DUMP_PATH                                                                       write heap dumps on error to this path
[build : create]     $BPL_JAVA_NMT_ENABLED        true                                                         enables Java Native Memory Tracking (NMT)
[build : create]     $BPL_JAVA_NMT_LEVEL          summary                                                      configure level of NMT, summary or detail
[build : create]     $BPL_JFR_ARGS                                                                             configure custom Java Flight Recording (JFR) arguments
[build : create]     $BPL_JFR_ENABLED             false                                                        enables Java Flight Recording (JFR)
[build : create]     $BPL_JMX_ENABLED             false                                                        enables Java Management Extensions (JMX)
[build : create]     $BPL_JMX_PORT                5000                                                         configure the JMX port
[build : create]     $BPL_JVM_HEAD_ROOM           0                                                            the headroom in memory calculation
[build : create]     $BPL_JVM_LOADED_CLASS_COUNT  35% of classes                                               the number of loaded classes in memory calculation
[build : create]     $BPL_JVM_THREAD_COUNT        250                                                          the number of threads in memory calculation
[build : create]     $JAVA_TOOL_OPTIONS                                                                        the JVM launch flags
[build : create]     Using buildpack default Java version 11
[build : create]   BellSoft Liberica JDK 11.0.16: Contributing to layer
[build : create]     Downloading from https://github.com/bell-sw/Liberica/releases/download/11.0.16+8/bellsoft-jdk11.0.16+8-linux-amd64.tar.gz
[build : create]     Verifying checksum

...

[build : create] ===> EXPORTING
[build : create] Adding layer 'paketo-buildpacks/ca-certificates:helper'
[build : create] Adding layer 'paketo-buildpacks/bellsoft-liberica:helper'
[build : create] Adding layer 'paketo-buildpacks/bellsoft-liberica:java-security-properties'
[build : create] Adding layer 'paketo-buildpacks/bellsoft-liberica:jre'
[build : create] Adding layer 'paketo-buildpacks/executable-jar:classpath'
[build : create] Adding layer 'paketo-buildpacks/spring-boot:helper'
[build : create] Adding layer 'paketo-buildpacks/spring-boot:spring-cloud-bindings'
[build : create] Adding layer 'paketo-buildpacks/spring-boot:web-application-type'
[build : create] Adding 5/5 app layer(s)
[build : create] Adding layer 'launcher'
[build : create] Adding layer 'config'
[build : create] Adding layer 'process-types'
[build : create] Adding label 'io.buildpacks.lifecycle.metadata'
[build : create] Adding label 'io.buildpacks.build.metadata'
[build : create] Adding label 'io.buildpacks.project.metadata'
[build : create] Adding label 'org.springframework.boot.version'
[build : create] Setting default process type 'web'
[build : create] Saving monda00/sample-gradle:v3...
[build : create] *** Images (sha256:80e142c664cbde7c1567cd61d91230870dc651488b091d797b85aad564533251):
[build : create]       monda00/sample-gradle:v3
[build : create] Reusing cache layer 'paketo-buildpacks/bellsoft-liberica:jdk'
[build : create] Reusing cache layer 'paketo-buildpacks/syft:syft'
[build : create] Adding cache layer 'paketo-buildpacks/gradle:application'
[build : create] Adding cache layer 'paketo-buildpacks/gradle:cache'

まとめ

  • -cache-dirを使うと指定したディレクトリにlayerがキャッシュされる
  • キャッシュされたlayerはrestorerexporterで利用される
  • restorerで復元されたcache layerがbuilderで使われる

ビルド時の依存関係などはキャッシュされないみたいです。

参考

タイトルとURLをコピーしました