harness-drone/build/docker/util.go

100 lines
2.5 KiB
Go

package docker
import (
"fmt"
"strings"
"github.com/drone/drone/yaml"
"github.com/samalba/dockerclient"
)
// helper function that converts the Continer data structure to the exepcted
// dockerclient.ContainerConfig.
func toContainerConfig(c *yaml.Container) *dockerclient.ContainerConfig {
config := &dockerclient.ContainerConfig{
Image: c.Image,
Env: toEnvironmentSlice(c.Environment),
Cmd: c.Command,
Entrypoint: c.Entrypoint,
WorkingDir: c.WorkingDir,
HostConfig: dockerclient.HostConfig{
Privileged: c.Privileged,
NetworkMode: c.Network,
Memory: c.MemLimit,
CpuShares: c.CPUShares,
CpuQuota: c.CPUQuota,
CpusetCpus: c.CPUSet,
MemorySwappiness: -1,
OomKillDisable: c.OomKillDisable,
},
}
if len(config.Entrypoint) == 0 {
config.Entrypoint = nil
}
if len(config.Cmd) == 0 {
config.Cmd = nil
}
if len(c.ExtraHosts) > 0 {
config.HostConfig.ExtraHosts = c.ExtraHosts
}
if len(c.DNS) != 0 {
config.HostConfig.Dns = c.DNS
}
if len(c.DNSSearch) != 0 {
config.HostConfig.DnsSearch = c.DNSSearch
}
if len(c.VolumesFrom) != 0 {
config.HostConfig.VolumesFrom = c.VolumesFrom
}
config.Volumes = map[string]struct{}{}
for _, path := range c.Volumes {
if strings.Index(path, ":") == -1 {
config.Volumes[path] = struct{}{}
continue
}
parts := strings.Split(path, ":")
config.Volumes[parts[1]] = struct{}{}
config.HostConfig.Binds = append(config.HostConfig.Binds, path)
}
for _, path := range c.Devices {
if strings.Index(path, ":") == -1 {
continue
}
parts := strings.Split(path, ":")
device := dockerclient.DeviceMapping{
PathOnHost: parts[0],
PathInContainer: parts[1],
CgroupPermissions: "rwm",
}
config.HostConfig.Devices = append(config.HostConfig.Devices, device)
}
return config
}
// helper function that converts the AuthConfig data structure to the exepcted
// dockerclient.AuthConfig.
func toAuthConfig(container *yaml.Container) *dockerclient.AuthConfig {
if container.AuthConfig.Username == "" &&
container.AuthConfig.Password == "" {
return nil
}
return &dockerclient.AuthConfig{
Email: container.AuthConfig.Email,
Username: container.AuthConfig.Username,
Password: container.AuthConfig.Password,
}
}
// helper function that converts a key value map of environment variables to a
// string slice in key=value format.
func toEnvironmentSlice(env map[string]string) []string {
var envs []string
for k, v := range env {
envs = append(envs, fmt.Sprintf("%s=%s", k, v))
}
return envs
}