Files
core/cluster/client/client.go
2023-06-27 15:11:31 +02:00

333 lines
7.4 KiB
Go

package client
import (
"bytes"
"encoding/json"
"fmt"
"io"
"net/http"
"net/url"
"time"
"github.com/datarhei/core/v16/config"
httpapi "github.com/datarhei/core/v16/http/api"
iamaccess "github.com/datarhei/core/v16/iam/access"
iamidentity "github.com/datarhei/core/v16/iam/identity"
"github.com/datarhei/core/v16/restream/app"
)
type JoinRequest struct {
ID string `json:"id"`
RaftAddress string `json:"raft_address"`
}
type AddProcessRequest struct {
Config app.Config `json:"config"`
}
type UpdateProcessRequest struct {
Config app.Config `json:"config"`
}
type SetProcessCommandRequest struct {
Command string `json:"order"`
}
type SetProcessMetadataRequest struct {
Metadata interface{} `json:"metadata"`
}
type AddIdentityRequest struct {
Identity iamidentity.User `json:"identity"`
}
type UpdateIdentityRequest struct {
Identity iamidentity.User `json:"identity"`
}
type SetPoliciesRequest struct {
Policies []iamaccess.Policy `json:"policies"`
}
type LockRequest struct {
Name string `json:"name"`
ValidUntil time.Time `json:"valid_until"`
}
type SetKVRequest struct {
Key string `json:"key"`
Value string `json:"value"`
}
type APIClient struct {
Address string
Client *http.Client
}
func (c *APIClient) Version() (string, error) {
data, err := c.call(http.MethodGet, "/", "", nil, "")
if err != nil {
return "", err
}
var version string
err = json.Unmarshal(data, &version)
if err != nil {
return "", err
}
return version, nil
}
func (c *APIClient) CoreAPIAddress() (string, error) {
data, err := c.call(http.MethodGet, "/v1/core", "", nil, "")
if err != nil {
return "", err
}
var address string
err = json.Unmarshal(data, &address)
if err != nil {
return "", err
}
return address, nil
}
func (c *APIClient) CoreConfig() (*config.Config, error) {
data, err := c.call(http.MethodGet, "/v1/core/config", "", nil, "")
if err != nil {
return nil, err
}
cfg := &config.Config{}
err = json.Unmarshal(data, &cfg)
if err != nil {
return nil, err
}
return cfg, nil
}
func (c *APIClient) Join(origin string, r JoinRequest) error {
data, err := json.Marshal(&r)
if err != nil {
return err
}
_, err = c.call(http.MethodPost, "/v1/server", "application/json", bytes.NewReader(data), origin)
return err
}
func (c *APIClient) Leave(origin string, id string) error {
_, err := c.call(http.MethodDelete, "/v1/server/"+url.PathEscape(id), "application/json", nil, origin)
return err
}
func (c *APIClient) AddProcess(origin string, r AddProcessRequest) error {
data, err := json.Marshal(r)
if err != nil {
return err
}
_, err = c.call(http.MethodPost, "/v1/process", "application/json", bytes.NewReader(data), origin)
return err
}
func (c *APIClient) RemoveProcess(origin string, id app.ProcessID) error {
_, err := c.call(http.MethodDelete, "/v1/process/"+url.PathEscape(id.ID)+"?domain="+url.QueryEscape(id.Domain), "application/json", nil, origin)
return err
}
func (c *APIClient) UpdateProcess(origin string, id app.ProcessID, r UpdateProcessRequest) error {
data, err := json.Marshal(r)
if err != nil {
return err
}
_, err = c.call(http.MethodPut, "/v1/process/"+url.PathEscape(id.ID)+"?domain="+url.QueryEscape(id.Domain), "application/json", bytes.NewReader(data), origin)
return err
}
func (c *APIClient) SetProcessCommand(origin string, id app.ProcessID, r SetProcessCommandRequest) error {
data, err := json.Marshal(r)
if err != nil {
return err
}
_, err = c.call(http.MethodPut, "/v1/process/"+url.PathEscape(id.ID)+"/command?domain="+url.QueryEscape(id.Domain), "application/json", bytes.NewReader(data), origin)
return err
}
func (c *APIClient) SetProcessMetadata(origin string, id app.ProcessID, key string, r SetProcessMetadataRequest) error {
data, err := json.Marshal(r)
if err != nil {
return err
}
_, err = c.call(http.MethodPut, "/v1/process/"+url.PathEscape(id.ID)+"/metadata/"+url.PathEscape(key)+"?domain="+url.QueryEscape(id.Domain), "application/json", bytes.NewReader(data), origin)
return err
}
func (c *APIClient) AddIdentity(origin string, r AddIdentityRequest) error {
data, err := json.Marshal(r)
if err != nil {
return err
}
_, err = c.call(http.MethodPost, "/v1/iam/user", "application/json", bytes.NewReader(data), origin)
return err
}
func (c *APIClient) UpdateIdentity(origin, name string, r UpdateIdentityRequest) error {
data, err := json.Marshal(r)
if err != nil {
return err
}
_, err = c.call(http.MethodPut, "/v1/iam/user/"+url.PathEscape(name), "application/json", bytes.NewReader(data), origin)
return err
}
func (c *APIClient) SetPolicies(origin, name string, r SetPoliciesRequest) error {
data, err := json.Marshal(r)
if err != nil {
return err
}
_, err = c.call(http.MethodPut, "/v1/iam/user/"+url.PathEscape(name)+"/policies", "application/json", bytes.NewReader(data), origin)
return err
}
func (c *APIClient) RemoveIdentity(origin string, name string) error {
_, err := c.call(http.MethodDelete, "/v1/iam/user/"+url.PathEscape(name), "application/json", nil, origin)
return err
}
func (c *APIClient) Lock(origin string, r LockRequest) error {
data, err := json.Marshal(r)
if err != nil {
return err
}
_, err = c.call(http.MethodPost, "/v1/lock", "application/json", bytes.NewReader(data), origin)
return err
}
func (c *APIClient) Unlock(origin string, name string) error {
_, err := c.call(http.MethodDelete, "/v1/lock/"+url.PathEscape(name), "application/json", nil, origin)
return err
}
func (c *APIClient) SetKV(origin string, r SetKVRequest) error {
data, err := json.Marshal(r)
if err != nil {
return err
}
_, err = c.call(http.MethodPost, "/v1/kv", "application/json", bytes.NewReader(data), origin)
return err
}
func (c *APIClient) UnsetKV(origin string, key string) error {
_, err := c.call(http.MethodDelete, "/v1/kv/"+url.PathEscape(key), "application/json", nil, origin)
return err
}
func (c *APIClient) Snapshot(origin string) (io.ReadCloser, error) {
return c.stream(http.MethodGet, "/v1/snapshot", "", nil, origin)
}
func (c *APIClient) IsReady(origin string) error {
_, err := c.call(http.MethodGet, "/v1/ready", "application/json", nil, origin)
return err
}
func (c *APIClient) stream(method, path, contentType string, data io.Reader, origin string) (io.ReadCloser, error) {
if len(c.Address) == 0 {
return nil, fmt.Errorf("no address defined")
}
address := "http://" + c.Address + path
req, err := http.NewRequest(method, address, data)
if err != nil {
return nil, err
}
req.Header.Add("X-Cluster-Origin", origin)
if method == "POST" || method == "PUT" {
req.Header.Add("Content-Type", contentType)
}
status, body, err := c.request(req)
if err != nil {
return nil, err
}
if status < 200 || status >= 300 {
e := httpapi.Error{}
defer body.Close()
x, _ := io.ReadAll(body)
json.Unmarshal(x, &e)
return nil, e
}
return body, nil
}
func (c *APIClient) call(method, path, contentType string, data io.Reader, origin string) ([]byte, error) {
body, err := c.stream(method, path, contentType, data, origin)
if err != nil {
return nil, err
}
defer body.Close()
x, _ := io.ReadAll(body)
return x, nil
}
func (c *APIClient) request(req *http.Request) (int, io.ReadCloser, error) {
if c.Client == nil {
tr := &http.Transport{
MaxIdleConns: 10,
IdleConnTimeout: 30 * time.Second,
}
c.Client = &http.Client{
Transport: tr,
Timeout: 5 * time.Second,
}
}
resp, err := c.Client.Do(req)
if err != nil {
return -1, nil, err
}
return resp.StatusCode, resp.Body, nil
}