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feat(manifest): override sidecar entrypoint and cmd (#2592)
This is done by following the same approach used to override default image settings. Closes #2501 By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.
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7 files changed

+161
-8
lines changed

7 files changed

+161
-8
lines changed

‎internal/pkg/deploy/cloudformation/stack/transformers.go

Lines changed: 13 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -72,6 +72,17 @@ func convertSidecar(s convertSidecarOpts) ([]*template.SidecarOpts, error) {
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if err := validateSidecarDependsOn(*config, name, s); err != nil {
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return nil, err
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}
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entrypoint, err := convertEntryPoint(config.EntryPoint)
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if err != nil {
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return nil, err
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}
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command, err := convertCommand(config.Command)
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if err != nil {
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return nil, err
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}
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mp := convertSidecarMountPoints(config.MountPoints)
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sidecars = append(sidecars, &template.SidecarOpts{
@@ -86,6 +97,8 @@ func convertSidecar(s convertSidecarOpts) ([]*template.SidecarOpts, error) {
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MountPoints: mp,
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DockerLabels: config.DockerLabels,
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DependsOn: config.DependsOn,
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EntryPoint: entrypoint,
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Command: command,
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})
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}
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return sidecars, nil

‎internal/pkg/deploy/cloudformation/stack/transformers_test.go

Lines changed: 86 additions & 8 deletions
Original file line numberDiff line numberDiff line change
@@ -26,6 +26,7 @@ func Test_convertSidecar(t *testing.T) {
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inLabels map[string]string
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inDependsOn map[string]string
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inImg manifest.Image
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inImageOverride manifest.ImageOverride
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circDepContainers []string
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wanted *template.SidecarOpts
@@ -162,19 +163,96 @@ func Test_convertSidecar(t *testing.T) {
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},
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},
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},
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"do not specify image override": {
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wanted: &template.SidecarOpts{
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Name: aws.String("foo"),
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CredsParam: mockCredsParam,
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Image: mockImage,
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Secrets: mockMap,
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Variables: mockMap,
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Essential: aws.Bool(false),
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EntryPoint: nil,
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Command: nil,
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},
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},
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"specify entrypoint as a string": {
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inImageOverride: manifest.ImageOverride{
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EntryPoint: &manifest.EntryPointOverride{String: aws.String("bin")},
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},
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wanted: &template.SidecarOpts{
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Name: aws.String("foo"),
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CredsParam: mockCredsParam,
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Image: mockImage,
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Secrets: mockMap,
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Variables: mockMap,
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Essential: aws.Bool(false),
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EntryPoint: []string{"bin"},
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Command: nil,
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},
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},
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"specify entrypoint as a string slice": {
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inImageOverride: manifest.ImageOverride{
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EntryPoint: &manifest.EntryPointOverride{StringSlice: []string{"bin", "arg"}},
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},
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wanted: &template.SidecarOpts{
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Name: aws.String("foo"),
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CredsParam: mockCredsParam,
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Image: mockImage,
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Secrets: mockMap,
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Variables: mockMap,
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Essential: aws.Bool(false),
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EntryPoint: []string{"bin", "arg"},
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Command: nil,
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},
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},
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"specify command as a string": {
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inImageOverride: manifest.ImageOverride{
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Command: &manifest.CommandOverride{String: aws.String("arg")},
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},
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wanted: &template.SidecarOpts{
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Name: aws.String("foo"),
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CredsParam: mockCredsParam,
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Image: mockImage,
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Secrets: mockMap,
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Variables: mockMap,
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Essential: aws.Bool(false),
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EntryPoint: nil,
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Command: []string{"arg"},
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},
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},
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"specify command as a string slice": {
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inImageOverride: manifest.ImageOverride{
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Command: &manifest.CommandOverride{StringSlice: []string{"arg1", "arg2"}},
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},
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wanted: &template.SidecarOpts{
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Name: aws.String("foo"),
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CredsParam: mockCredsParam,
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Image: mockImage,
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Secrets: mockMap,
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Variables: mockMap,
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Essential: aws.Bool(false),
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EntryPoint: nil,
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Command: []string{"arg1", "arg2"},
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},
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},
165242
}
166243
for name, tc := range testCases {
167244
t.Run(name, func(t *testing.T) {
168245
sidecar := map[string]*manifest.SidecarConfig{
169246
"foo": {
170-
CredsParam: mockCredsParam,
171-
Image: mockImage,
172-
Secrets: mockMap,
173-
Variables: mockMap,
174-
Essential: aws.Bool(tc.inEssential),
175-
Port: tc.inPort,
176-
DockerLabels: tc.inLabels,
177-
DependsOn: tc.inDependsOn,
247+
CredsParam: mockCredsParam,
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Image: mockImage,
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Secrets: mockMap,
250+
Variables: mockMap,
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Essential: aws.Bool(tc.inEssential),
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Port: tc.inPort,
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DockerLabels: tc.inLabels,
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DependsOn: tc.inDependsOn,
255+
ImageOverride: tc.inImageOverride,
178256
},
179257
}
180258
got, err := convertSidecar(convertSidecarOpts{

‎internal/pkg/manifest/workload.go

Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -438,6 +438,7 @@ type SidecarConfig struct {
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MountPoints []SidecarMountPoint `yaml:"mount_points"`
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DockerLabels map[string]string `yaml:"labels"`
440440
DependsOn map[string]string `yaml:"depends_on"`
441+
ImageOverride `yaml:",inline"`
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}
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443444
// TaskConfig represents the resource boundaries and environment variables for the containers in the task.

‎internal/pkg/template/workload.go

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Original file line numberDiff line numberDiff line change
@@ -91,6 +91,8 @@ type SidecarOpts struct {
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MountPoints []*MountPoint
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DockerLabels map[string]string
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DependsOn map[string]string
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EntryPoint []string
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Command []string
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}
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// StorageOpts holds data structures for rendering Volumes and Mount Points

‎site/content/docs/developing/sidecars.en.md

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@@ -44,6 +44,12 @@ sidecars:
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```
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{% include 'sidecar-config.en.md' %}
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<div class="separator"></div>
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## Example
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4753
Below is an example of specifying the [nginx](https://www.nginx.com/) sidecar container in a load balanced web service manifest.
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4955
``` yaml

‎site/content/docs/include/sidecar-config.en.md

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@@ -0,0 +1,52 @@
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<a id="port" href="#port" class="field">`port`</a> <span class="type">Integer</span>
3+
Port of the container to expose (optional).
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5+
<a id="image" href="#image" class="field">`image`</a> <span class="type">String</span>
6+
Image URL for the sidecar container (required).
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8+
<a id="credentialsParameter" href="#credentialsParameter" class="field">`credentialsParameter`</a> <span class="type">String</span>
9+
ARN of the secret containing the private repository credentials (optional).
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11+
<a id="variables" href="#variables" class="field">`variables`</a> <span class="type">Map</span>
12+
Environment variables for the sidecar container (optional)
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14+
<a id="secrets" href="#secrets" class="field">`secrets`</a> <span class="type">Map</span>
15+
Secrets to expose to the sidecar container (optional)
16+
17+
<a id="mount-points" href="#mount-points" class="field">`mount_points`</a> <span class="type">Array of Maps</span>
18+
Mount paths for EFS volumes specified at the service level (optional).
19+
20+
<span class="parent-field">mount_points.</span><a id="mount-points-source-volume" href="#mount-points-source-volume" class="field">`source_volume`</a> <span class="type">String</span>
21+
Source volume to mount in this sidecar (required).
22+
23+
<span class="parent-field">mount_points.</span><a id="mount-points-path" href="#mount-points-path" class="field">`path`</a> <span class="type">String</span>
24+
The path inside the sidecar container at which to mount the volume (required).
25+
26+
<span class="parent-field">mount_points.</span><a id="mount-points-read-only" href="#mount-points-read-only" class="field">`read_only`</a> <span class="type">Boolean</span>
27+
Whether to allow the sidecar read-only access to the volume (default true).
28+
29+
<a id="labels" href="#labels" class="field">`labels`</a> <span class="type">Map</span>
30+
Docker labels to apply to this container (optional).
31+
32+
<a id="depends_on" href="#depends_on" class="field">`depends_on`</a> <span class="type">Map</span>
33+
Container dependencies to apply to this container (optional).
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35+
<a id="entrypoint" href="#entrypoint" class="field">`entrypoint`</a> <span class="type">String or Array of Strings</span>
36+
Override the default entrypoint in the sidecar.
37+
```yaml
38+
# String version.
39+
entrypoint: "/bin/entrypoint --p1 --p2"
40+
# Alteratively, as an array of strings.
41+
entrypoint: ["/bin/entrypoint", "--p1", "--p2"]
42+
```
43+
44+
<a id="command" href="#command" class="field">`command`</a> <span class="type">String or Array of Strings</span>
45+
Override the default command in the sidecar.
46+
47+
```yaml
48+
# String version.
49+
command: ps au
50+
# Alteratively, as an array of strings.
51+
command: ["ps", "au"]
52+
```

‎templates/workloads/partials/cf/sidecars.yml

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@@ -18,6 +18,7 @@
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- Name: {{$sidecar.Name}}
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Image: {{$sidecar.Image}}{{if $sidecar.Essential}}
2020
Essential: {{$sidecar.Essential}}{{end}}{{if $sidecar.Port}}
21+
{{include "image-overrides" . | indent 2}}
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PortMappings:
2223
- ContainerPort: {{$sidecar.Port}}{{if $sidecar.Protocol}}
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Protocol: {{$sidecar.Protocol}}{{end}}{{end}}

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