147 lines
4.6 KiB
Go
147 lines
4.6 KiB
Go
// Copyright 2014 Google Inc. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Handler for Docker containers.
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package docker
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import (
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"io/ioutil"
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"os"
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"path"
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"strings"
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"testing"
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"github.com/docker/docker/api/types/container"
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"github.com/stretchr/testify/assert"
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)
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func TestStorageDirDetectionWithOldVersions(t *testing.T) {
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as := assert.New(t)
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rwLayer, err := getRwLayerID("abcd", "/", aufsStorageDriver, []int{1, 9, 0})
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as.Nil(err)
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as.Equal(rwLayer, "abcd")
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}
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func TestStorageDirDetectionWithNewVersions(t *testing.T) {
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as := assert.New(t)
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testDir, err := ioutil.TempDir("", "")
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as.Nil(err)
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containerID := "abcd"
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randomizedID := "xyz"
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randomIDPath := path.Join(testDir, "image/aufs/layerdb/mounts/", containerID)
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as.Nil(os.MkdirAll(randomIDPath, os.ModePerm))
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as.Nil(ioutil.WriteFile(path.Join(randomIDPath, "mount-id"), []byte(randomizedID), os.ModePerm))
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rwLayer, err := getRwLayerID(containerID, testDir, "aufs", []int{1, 10, 0})
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as.Nil(err)
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as.Equal(rwLayer, randomizedID)
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rwLayer, err = getRwLayerID(containerID, testDir, "aufs", []int{1, 10, 0})
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as.Nil(err)
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as.Equal(rwLayer, randomizedID)
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}
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func rawMetadataEnvMatch(dockerEnvWhiteList string, cntConfig container.Config) map[string]string {
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metadataEnvs := strings.Split(dockerEnvWhiteList, ",")
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handlerEnvs := make(map[string]string)
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// split env vars to get metadata map.
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for _, exposedEnv := range metadataEnvs {
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for _, envVar := range cntConfig.Env {
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if envVar != "" {
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splits := strings.SplitN(envVar, "=", 2)
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if len(splits) == 2 && splits[0] == exposedEnv {
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handlerEnvs[strings.ToLower(exposedEnv)] = splits[1]
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}
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}
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}
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}
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return handlerEnvs
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}
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func newMetadataEnvMatch(dockerEnvWhiteList string, cntConfig container.Config) map[string]string {
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metadataEnvs := strings.Split(dockerEnvWhiteList, ",")
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handlerEnvs := make(map[string]string)
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// split env vars to get metadata map.
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for _, exposedEnv := range metadataEnvs {
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if exposedEnv == "" {
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// if no dockerEnvWhitelist provided, len(metadataEnvs) == 1, metadataEnvs[0] == ""
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continue
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}
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for _, envVar := range cntConfig.Env {
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if envVar != "" {
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splits := strings.SplitN(envVar, "=", 2)
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if len(splits) == 2 && strings.HasPrefix(splits[0], exposedEnv) {
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handlerEnvs[strings.ToLower(splits[0])] = splits[1]
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}
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}
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}
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}
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return handlerEnvs
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}
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func TestDockerEnvWhitelist(t *testing.T) {
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as := assert.New(t)
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envTotalMatch := "TEST_REGION,TEST_ZONE"
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envMatchWithPrefix := "TEST_"
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envMatchWithPrefixEmpty := ""
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rawCntConfig := container.Config{Env: []string{"TEST_REGION=FRA", "TEST_ZONE=A", "HELLO=WORLD"}}
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newCntConfig := container.Config{Env: []string{"TEST_REGION=FRA", "TEST_ZONE=A", "TEST_POOL=TOOLING", "HELLO=WORLD"}}
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rawExpected := map[string]string{
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"test_region": "FRA",
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"test_zone": "A",
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}
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newExpected := map[string]string{
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"test_region": "FRA",
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"test_zone": "A",
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"test_pool": "TOOLING",
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}
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emptyExpected := map[string]string{}
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rawEnvsTotalMatch := rawMetadataEnvMatch(envTotalMatch, rawCntConfig)
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newEnvsTotalMatch := newMetadataEnvMatch(envTotalMatch, rawCntConfig)
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// make sure total match does not change
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as.Equal(rawEnvsTotalMatch, newEnvsTotalMatch)
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as.Equal(rawEnvsTotalMatch, rawExpected)
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rawEnvsTotalMatch2 := rawMetadataEnvMatch(envTotalMatch, newCntConfig)
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newEnvsTotalMatch2 := newMetadataEnvMatch(envTotalMatch, newCntConfig)
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// make sure total match does not change with more envs exposed
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as.Equal(rawEnvsTotalMatch2, newEnvsTotalMatch2)
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as.Equal(rawEnvsTotalMatch2, rawExpected)
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newEnvsMatchWithPrefix := newMetadataEnvMatch(envMatchWithPrefix, rawCntConfig)
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newEnvsMatchWithPrefix2 := newMetadataEnvMatch(envMatchWithPrefix, newCntConfig)
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// make sure new method can return envs with prefix specified
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as.Equal(newEnvsMatchWithPrefix, rawExpected)
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as.Equal(newEnvsMatchWithPrefix2, newExpected)
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newEnvsMatchWithEmptyPrefix := newMetadataEnvMatch(envMatchWithPrefixEmpty, newCntConfig)
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rawEnvsMatchWithEmptyWhitelist := rawMetadataEnvMatch(envMatchWithPrefixEmpty, newCntConfig)
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// make sure empty whitelist returns nothing
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as.Equal(newEnvsMatchWithEmptyPrefix, emptyExpected)
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as.Equal(rawEnvsMatchWithEmptyWhitelist, emptyExpected)
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}
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