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package ignition
import (
"bytes"
"crypto/sha256"
"encoding/hex"
"encoding/json"
"fmt"
"net/url"
"sync"
"github.com/coreos/go-systemd/unit"
"github.com/coreos/ignition/config/types"
"github.com/hashicorp/terraform/helper/schema"
"github.com/hashicorp/terraform/terraform"
)
// globalCache keeps the instances of the internal types of ignition generated
// by the different data resources with the goal to be reused by the
// ignition_config data resource. The key of the maps are a hash of the types
// calculated on the type serialized to JSON.
var globalCache = &cache{
disks: make(map[string]*types.Disk, 0),
arrays: make(map[string]*types.Raid, 0),
filesystems: make(map[string]*types.Filesystem, 0),
files: make(map[string]*types.File, 0),
systemdUnits: make(map[string]*types.SystemdUnit, 0),
networkdUnits: make(map[string]*types.NetworkdUnit, 0),
users: make(map[string]*types.User, 0),
groups: make(map[string]*types.Group, 0),
}
func Provider() terraform.ResourceProvider {
return &schema.Provider{
DataSourcesMap: map[string]*schema.Resource{
"ignition_config": resourceConfig(),
"ignition_disk": resourceDisk(),
"ignition_raid": resourceRaid(),
"ignition_filesystem": resourceFilesystem(),
"ignition_file": resourceFile(),
"ignition_systemd_unit": resourceSystemdUnit(),
"ignition_networkd_unit": resourceNetworkdUnit(),
"ignition_user": resourceUser(),
"ignition_group": resourceGroup(),
},
ResourcesMap: map[string]*schema.Resource{
"ignition_config": schema.DataSourceResourceShim(
"ignition_config",
resourceConfig(),
),
"ignition_disk": schema.DataSourceResourceShim(
"ignition_disk",
resourceDisk(),
),
"ignition_raid": schema.DataSourceResourceShim(
"ignition_raid",
resourceRaid(),
),
"ignition_filesystem": schema.DataSourceResourceShim(
"ignition_filesystem",
resourceFilesystem(),
),
"ignition_file": schema.DataSourceResourceShim(
"ignition_file",
resourceFile(),
),
"ignition_systemd_unit": schema.DataSourceResourceShim(
"ignition_systemd_unit",
resourceSystemdUnit(),
),
"ignition_networkd_unit": schema.DataSourceResourceShim(
"ignition_networkd_unit",
resourceNetworkdUnit(),
),
"ignition_user": schema.DataSourceResourceShim(
"ignition_user",
resourceUser(),
),
"ignition_group": schema.DataSourceResourceShim(
"ignition_group",
resourceGroup(),
),
},
}
}
type cache struct {
disks map[string]*types.Disk
arrays map[string]*types.Raid
filesystems map[string]*types.Filesystem
files map[string]*types.File
systemdUnits map[string]*types.SystemdUnit
networkdUnits map[string]*types.NetworkdUnit
users map[string]*types.User
groups map[string]*types.Group
sync.Mutex
}
func (c *cache) addDisk(g *types.Disk) string {
c.Lock()
defer c.Unlock()
id := id(g)
c.disks[id] = g
return id
}
func (c *cache) addRaid(r *types.Raid) string {
c.Lock()
defer c.Unlock()
id := id(r)
c.arrays[id] = r
return id
}
func (c *cache) addFilesystem(f *types.Filesystem) string {
c.Lock()
defer c.Unlock()
id := id(f)
c.filesystems[id] = f
return id
}
func (c *cache) addFile(f *types.File) string {
c.Lock()
defer c.Unlock()
id := id(f)
c.files[id] = f
return id
}
func (c *cache) addSystemdUnit(u *types.SystemdUnit) string {
c.Lock()
defer c.Unlock()
id := id(u)
c.systemdUnits[id] = u
return id
}
func (c *cache) addNetworkdUnit(u *types.NetworkdUnit) string {
c.Lock()
defer c.Unlock()
id := id(u)
c.networkdUnits[id] = u
return id
}
func (c *cache) addUser(u *types.User) string {
c.Lock()
defer c.Unlock()
id := id(u)
c.users[id] = u
return id
}
func (c *cache) addGroup(g *types.Group) string {
c.Lock()
defer c.Unlock()
id := id(g)
c.groups[id] = g
return id
}
func id(input interface{}) string {
b, _ := json.Marshal(input)
return hash(string(b))
}
func hash(s string) string {
sha := sha256.Sum256([]byte(s))
return hex.EncodeToString(sha[:])
}
func castSliceInterface(i []interface{}) []string {
var o []string
for _, value := range i {
o = append(o, value.(string))
}
return o
}
func getUInt(d *schema.ResourceData, key string) *uint {
var uid *uint
if value, ok := d.GetOk(key); ok {
u := uint(value.(int))
uid = &u
}
return uid
}
var errEmptyUnit = fmt.Errorf("invalid or empty unit content")
func validateUnitContent(content string) error {
c := bytes.NewBufferString(content)
unit, err := unit.Deserialize(c)
if err != nil {
return fmt.Errorf("invalid unit content: %s", err)
}
if len(unit) == 0 {
return errEmptyUnit
}
return nil
}
func buildURL(raw string) (types.Url, error) {
u, err := url.Parse(raw)
if err != nil {
return types.Url{}, err
}
return types.Url(*u), nil
}
func buildHash(raw string) (types.Hash, error) {
h := types.Hash{}
err := h.UnmarshalJSON([]byte(fmt.Sprintf("%q", raw)))
return h, err
}
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