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containers.go
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containers.go
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package phases
import (
"fmt"
"os"
. "github.com/flanksource/konfigadm/pkg/types"
)
var Containers Phase = containers{}
type containers struct{}
func (p containers) ApplyPhase(sys *Config, ctx *SystemContext) ([]Command, Filesystem, error) {
var commands []Command
files := Filesystem{}
for _, c := range sys.Containers {
sys.Services[c.Name()] = Service{
Name: c.Name(),
ExecStart: exec(ctx, c),
Extra: DefaultSystemdService(c.Name()),
}
if len(c.Env) > 0 {
files["/etc/environment."+c.Name()] = File{Content: toEnvironmentFile(ctx, c)}
}
}
return commands, files, nil
}
func (p containers) Verify(cfg *Config, results *VerifyResults, flags ...Flag) bool {
verify := true
for f := range cfg.Files {
if _, err := os.Stat(f); err != nil {
verify = false
results.Fail("%s does not exist", f)
} else {
results.Pass("%s exists", f)
}
}
for f := range cfg.Templates {
if _, err := os.Stat(f); err != nil {
verify = false
results.Fail("%s does not exist", f)
} else {
results.Pass("%s exists", f)
}
}
return verify
}
func toEnvironmentFile(ctx *SystemContext, c Container) string {
s := ""
for k, v := range interpolateMap(ctx, c.Env) {
s += fmt.Sprintf("%s=%s\n", k, v)
}
return s
}
func exec(ctx *SystemContext, c Container) string {
exec := c.DockerOpts
if len(c.Env) > 0 {
exec += fmt.Sprintf(" --env-file /etc/environment.%s", c.Name())
}
if c.Network != "" {
exec += " --network " + c.Network
}
for _, v := range c.Volumes {
exec += fmt.Sprintf(" -v %s", v)
}
for _, p := range c.Ports {
exec += fmt.Sprintf(" -p %d:%d", p.Port, p.Target)
}
return fmt.Sprintf("/usr/bin/docker run --rm --name %s %s %s %s", c.Name(), exec, c.Image, interpolate(ctx, c.Args))
}