Ta-Ching ChenandSoam Vasani
e4fe007838
Adds support for message queue triggers based on the NATS-Streaming message queue. This lets the user map a queue topic to a function, and optionally send the function's response into another queue topic. The message queue trigger manager is designed to be message queue independent, so we should be able add support for more queues by adding implementations for the relatively simple mqtrigger.MessageQueue interface.
756 lines
15 KiB
Go
756 lines
15 KiB
Go
/*
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Copyright 2016 The Fission Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package client
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import (
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"bytes"
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"encoding/base64"
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"encoding/json"
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"errors"
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"fmt"
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"io/ioutil"
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"net/http"
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"strings"
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"github.com/fission/fission"
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)
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type (
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Client struct {
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Url string
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}
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)
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func MakeClient(serverUrl string) *Client {
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return &Client{Url: strings.TrimSuffix(serverUrl, "/")}
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}
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func (c *Client) delete(relativeUrl string) error {
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req, err := http.NewRequest("DELETE", c.url(relativeUrl), nil)
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if err != nil {
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return err
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}
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resp, err := http.DefaultClient.Do(req)
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if err != nil {
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return err
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}
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defer resp.Body.Close()
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if resp.StatusCode != 200 {
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body, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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return errors.New("Delete failed")
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} else {
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return errors.New("Delete failed: " + string(body))
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}
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}
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return nil
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}
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func (c *Client) put(relativeUrl string, contentType string, body []byte) (*http.Response, error) {
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req, err := http.NewRequest("PUT", c.url(relativeUrl), bytes.NewReader(body))
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if err != nil {
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return nil, err
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}
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req.Header.Set("Content-type", contentType)
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return http.DefaultClient.Do(req)
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}
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func (c *Client) url(relativeUrl string) string {
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return c.Url + "/v1/" + relativeUrl
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}
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func (c *Client) handleResponse(resp *http.Response) ([]byte, error) {
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if resp.StatusCode != 200 {
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return nil, fission.MakeErrorFromHTTP(resp)
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}
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body, err := ioutil.ReadAll(resp.Body)
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return body, err
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}
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func (c *Client) handleCreateResponse(resp *http.Response) ([]byte, error) {
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if resp.StatusCode != 201 {
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return nil, fission.MakeErrorFromHTTP(resp)
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}
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body, err := ioutil.ReadAll(resp.Body)
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return body, err
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}
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func (c *Client) FunctionCreate(f *fission.Function) (*fission.Metadata, error) {
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orig := f.Code
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f.Code = base64.StdEncoding.EncodeToString([]byte(f.Code))
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defer func() { f.Code = orig }()
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reqbody, err := json.Marshal(f)
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if err != nil {
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return nil, err
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}
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resp, err := http.Post(c.url("functions"), "application/json", bytes.NewReader(reqbody))
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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body, err := c.handleCreateResponse(resp)
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if err != nil {
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return nil, err
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}
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var m fission.Metadata
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err = json.Unmarshal(body, &m)
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if err != nil {
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return nil, err
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}
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return &m, nil
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}
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func (c *Client) FunctionGet(m *fission.Metadata) (*fission.Function, error) {
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relativeUrl := fmt.Sprintf("functions/%v", m.Name)
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if len(m.Uid) > 0 {
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relativeUrl += fmt.Sprintf("?uid=%v", m.Uid)
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}
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resp, err := http.Get(c.url(relativeUrl))
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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body, err := c.handleResponse(resp)
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if err != nil {
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return nil, err
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}
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var f fission.Function
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err = json.Unmarshal(body, &f)
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if err != nil {
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return nil, err
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}
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dec, err := base64.StdEncoding.DecodeString(f.Code)
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if err != nil {
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return nil, err
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}
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f.Code = string(dec)
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return &f, nil
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}
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func (c *Client) FunctionGetRaw(m *fission.Metadata) ([]byte, error) {
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relativeUrl := fmt.Sprintf("functions/%v?raw=1", m.Name)
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if len(m.Uid) > 0 {
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relativeUrl += fmt.Sprintf("&uid=%v", m.Uid)
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}
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resp, err := http.Get(c.url(relativeUrl))
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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return c.handleResponse(resp)
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}
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func (c *Client) FunctionUpdate(f *fission.Function) (*fission.Metadata, error) {
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orig := f.Code
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f.Code = base64.StdEncoding.EncodeToString([]byte(f.Code))
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defer func() { f.Code = orig }()
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reqbody, err := json.Marshal(f)
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if err != nil {
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return nil, err
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}
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relativeUrl := fmt.Sprintf("functions/%v", f.Metadata.Name)
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resp, err := c.put(relativeUrl, "application/json", reqbody)
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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body, err := c.handleResponse(resp)
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if err != nil {
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return nil, err
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}
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var m fission.Metadata
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err = json.Unmarshal(body, &m)
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if err != nil {
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return nil, err
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}
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return &m, nil
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}
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func (c *Client) FunctionDelete(m *fission.Metadata) error {
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relativeUrl := fmt.Sprintf("functions/%v", m.Name)
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if len(m.Uid) > 0 {
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relativeUrl += fmt.Sprintf("?uid=%v", m.Uid)
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}
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err := c.delete(relativeUrl)
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return err
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}
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func (c *Client) FunctionList() ([]fission.Function, error) {
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resp, err := http.Get(c.url("functions"))
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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body, err := c.handleResponse(resp)
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if err != nil {
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return nil, err
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}
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funcs := make([]fission.Function, 0)
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err = json.Unmarshal(body, &funcs)
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if err != nil {
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return nil, err
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}
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return funcs, nil
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}
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func (c *Client) HTTPTriggerCreate(t *fission.HTTPTrigger) (*fission.Metadata, error) {
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reqbody, err := json.Marshal(t)
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if err != nil {
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return nil, err
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}
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resp, err := http.Post(c.url("triggers/http"), "application/json", bytes.NewReader(reqbody))
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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body, err := c.handleCreateResponse(resp)
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if err != nil {
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return nil, err
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}
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var m fission.Metadata
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err = json.Unmarshal(body, &m)
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if err != nil {
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return nil, err
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}
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return &m, nil
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}
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func (c *Client) HTTPTriggerGet(m *fission.Metadata) (*fission.HTTPTrigger, error) {
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relativeUrl := fmt.Sprintf("triggers/http/%v", m.Name)
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if len(m.Uid) > 0 {
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relativeUrl += fmt.Sprintf("?uid=%v", m.Uid)
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}
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resp, err := http.Get(c.url(relativeUrl))
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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body, err := c.handleResponse(resp)
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if err != nil {
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return nil, err
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}
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var t fission.HTTPTrigger
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err = json.Unmarshal(body, &t)
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if err != nil {
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return nil, err
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}
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return &t, nil
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}
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func (c *Client) HTTPTriggerUpdate(t *fission.HTTPTrigger) (*fission.Metadata, error) {
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reqbody, err := json.Marshal(t)
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if err != nil {
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return nil, err
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}
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relativeUrl := fmt.Sprintf("triggers/http/%v", t.Metadata.Name)
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resp, err := c.put(relativeUrl, "application/json", reqbody)
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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body, err := c.handleResponse(resp)
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if err != nil {
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return nil, err
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}
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var m fission.Metadata
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err = json.Unmarshal(body, &m)
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if err != nil {
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return nil, err
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}
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return &m, nil
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}
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func (c *Client) HTTPTriggerDelete(m *fission.Metadata) error {
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relativeUrl := fmt.Sprintf("triggers/http/%v", m.Name)
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if len(m.Uid) > 0 {
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relativeUrl += fmt.Sprintf("?uid=%v", m.Uid)
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}
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err := c.delete(relativeUrl)
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return err
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}
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func (c *Client) HTTPTriggerList() ([]fission.HTTPTrigger, error) {
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resp, err := http.Get(c.url("triggers/http"))
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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body, err := c.handleResponse(resp)
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if err != nil {
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return nil, err
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}
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triggers := make([]fission.HTTPTrigger, 0)
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err = json.Unmarshal(body, &triggers)
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if err != nil {
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return nil, err
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}
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return triggers, nil
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}
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func (c *Client) EnvironmentCreate(env *fission.Environment) (*fission.Metadata, error) {
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reqbody, err := json.Marshal(env)
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if err != nil {
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return nil, err
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}
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resp, err := http.Post(c.url("environments"), "application/json", bytes.NewReader(reqbody))
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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body, err := c.handleCreateResponse(resp)
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if err != nil {
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return nil, err
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}
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var m fission.Metadata
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err = json.Unmarshal(body, &m)
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if err != nil {
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return nil, err
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}
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return &m, nil
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}
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func (c *Client) EnvironmentGet(m *fission.Metadata) (*fission.Environment, error) {
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relativeUrl := fmt.Sprintf("environments/%v", m.Name)
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if len(m.Uid) > 0 {
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relativeUrl += fmt.Sprintf("?uid=%v", m.Uid)
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}
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resp, err := http.Get(c.url(relativeUrl))
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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body, err := c.handleResponse(resp)
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if err != nil {
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return nil, err
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}
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var env fission.Environment
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err = json.Unmarshal(body, &env)
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if err != nil {
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return nil, err
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}
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return &env, nil
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}
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func (c *Client) EnvironmentUpdate(env *fission.Environment) (*fission.Metadata, error) {
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reqbody, err := json.Marshal(env)
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if err != nil {
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return nil, err
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}
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relativeUrl := fmt.Sprintf("environments/%v", env.Metadata.Name)
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resp, err := c.put(relativeUrl, "application/json", reqbody)
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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body, err := c.handleResponse(resp)
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if err != nil {
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return nil, err
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}
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var m fission.Metadata
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err = json.Unmarshal(body, &m)
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if err != nil {
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return nil, err
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}
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return &m, nil
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}
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func (c *Client) EnvironmentDelete(m *fission.Metadata) error {
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relativeUrl := fmt.Sprintf("environments/%v", m.Name)
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if len(m.Uid) > 0 {
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relativeUrl += fmt.Sprintf("?uid=%v", m.Uid)
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}
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err := c.delete(relativeUrl)
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return err
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}
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func (c *Client) EnvironmentList() ([]fission.Environment, error) {
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resp, err := http.Get(c.url("environments"))
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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body, err := c.handleResponse(resp)
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if err != nil {
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return nil, err
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}
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envs := make([]fission.Environment, 0)
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err = json.Unmarshal(body, &envs)
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if err != nil {
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return nil, err
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}
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return envs, nil
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}
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func (c *Client) WatchCreate(w *fission.Watch) (*fission.Metadata, error) {
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reqbody, err := json.Marshal(w)
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if err != nil {
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return nil, err
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}
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resp, err := http.Post(c.url("watches"), "application/json", bytes.NewReader(reqbody))
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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body, err := c.handleCreateResponse(resp)
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if err != nil {
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return nil, err
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}
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var m fission.Metadata
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err = json.Unmarshal(body, &m)
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if err != nil {
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return nil, err
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}
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return &m, nil
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}
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func (c *Client) WatchGet(m *fission.Metadata) (*fission.Watch, error) {
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relativeUrl := fmt.Sprintf("watches/%v", m.Name)
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if len(m.Uid) > 0 {
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relativeUrl += fmt.Sprintf("?uid=%v", m.Uid)
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}
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resp, err := http.Get(c.url(relativeUrl))
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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body, err := c.handleResponse(resp)
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if err != nil {
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return nil, err
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}
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var w fission.Watch
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err = json.Unmarshal(body, &w)
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if err != nil {
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return nil, err
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}
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return &w, nil
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}
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func (c *Client) WatchUpdate(w *fission.Watch) (*fission.Metadata, error) {
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return nil, fission.MakeError(fission.ErrorNotImplmented,
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"watch update not implemented")
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}
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func (c *Client) WatchDelete(m *fission.Metadata) error {
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relativeUrl := fmt.Sprintf("watches/%v", m.Name)
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if len(m.Uid) > 0 {
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relativeUrl += fmt.Sprintf("?uid=%v", m.Uid)
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}
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err := c.delete(relativeUrl)
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return err
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}
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|
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func (c *Client) WatchList() ([]fission.Watch, error) {
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resp, err := http.Get(c.url("watches"))
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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body, err := c.handleResponse(resp)
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if err != nil {
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return nil, err
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}
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watches := make([]fission.Watch, 0)
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err = json.Unmarshal(body, &watches)
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if err != nil {
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return nil, err
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}
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|
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return watches, err
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}
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|
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func (c *Client) TimeTriggerCreate(t *fission.TimeTrigger) (*fission.Metadata, error) {
|
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reqbody, err := json.Marshal(t)
|
|
if err != nil {
|
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return nil, err
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}
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resp, err := http.Post(c.url("triggers/time"), "application/json", bytes.NewReader(reqbody))
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|
if err != nil {
|
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return nil, err
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}
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defer resp.Body.Close()
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|
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body, err := c.handleCreateResponse(resp)
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if err != nil {
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return nil, err
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}
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|
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var m fission.Metadata
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err = json.Unmarshal(body, &m)
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if err != nil {
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return nil, err
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}
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return &m, nil
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}
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|
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func (c *Client) TimeTriggerGet(m *fission.Metadata) (*fission.TimeTrigger, error) {
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relativeUrl := fmt.Sprintf("triggers/time/%v", m.Name)
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if len(m.Uid) > 0 {
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relativeUrl += fmt.Sprintf("?uid=%v", m.Uid)
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}
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|
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resp, err := http.Get(c.url(relativeUrl))
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|
if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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body, err := c.handleResponse(resp)
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if err != nil {
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return nil, err
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}
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|
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var t fission.TimeTrigger
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err = json.Unmarshal(body, &t)
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if err != nil {
|
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return nil, err
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}
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|
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return &t, nil
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}
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|
|
func (c *Client) TimeTriggerUpdate(t *fission.TimeTrigger) (*fission.Metadata, error) {
|
|
reqbody, err := json.Marshal(t)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
relativeUrl := fmt.Sprintf("triggers/time/%v", t.Metadata.Name)
|
|
|
|
resp, err := c.put(relativeUrl, "application/json", reqbody)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer resp.Body.Close()
|
|
|
|
body, err := c.handleResponse(resp)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
var m fission.Metadata
|
|
err = json.Unmarshal(body, &m)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return &m, nil
|
|
}
|
|
|
|
func (c *Client) TimeTriggerDelete(m *fission.Metadata) error {
|
|
relativeUrl := fmt.Sprintf("triggers/time/%v", m.Name)
|
|
if len(m.Uid) > 0 {
|
|
relativeUrl += fmt.Sprintf("?uid=%v", m.Uid)
|
|
}
|
|
err := c.delete(relativeUrl)
|
|
return err
|
|
}
|
|
|
|
func (c *Client) TimeTriggerList() ([]fission.TimeTrigger, error) {
|
|
resp, err := http.Get(c.url("triggers/time"))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer resp.Body.Close()
|
|
|
|
body, err := c.handleResponse(resp)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
triggers := make([]fission.TimeTrigger, 0)
|
|
err = json.Unmarshal(body, &triggers)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return triggers, nil
|
|
}
|
|
|
|
func (c *Client) MessageQueueTriggerCreate(t *fission.MessageQueueTrigger) (*fission.Metadata, error) {
|
|
reqbody, err := json.Marshal(t)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
resp, err := http.Post(c.url("triggers/messagequeue"), "application/json", bytes.NewReader(reqbody))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer resp.Body.Close()
|
|
|
|
body, err := c.handleCreateResponse(resp)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
var m fission.Metadata
|
|
err = json.Unmarshal(body, &m)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return &m, nil
|
|
}
|
|
|
|
func (c *Client) MessageQueueTriggerGet(m *fission.Metadata) (*fission.MessageQueueTrigger, error) {
|
|
relativeUrl := fmt.Sprintf("triggers/messagequeue/%v", m.Name)
|
|
if len(m.Uid) > 0 {
|
|
relativeUrl += fmt.Sprintf("?uid=%v", m.Uid)
|
|
}
|
|
|
|
resp, err := http.Get(c.url(relativeUrl))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer resp.Body.Close()
|
|
|
|
body, err := c.handleResponse(resp)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
var t fission.MessageQueueTrigger
|
|
err = json.Unmarshal(body, &t)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return &t, nil
|
|
}
|
|
|
|
func (c *Client) MessageQueueTriggerUpdate(mqTrigger *fission.MessageQueueTrigger) (*fission.Metadata, error) {
|
|
reqbody, err := json.Marshal(mqTrigger)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
relativeUrl := fmt.Sprintf("triggers/messagequeue/%v", mqTrigger.Metadata.Name)
|
|
|
|
resp, err := c.put(relativeUrl, "application/json", reqbody)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer resp.Body.Close()
|
|
|
|
body, err := c.handleResponse(resp)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
var m fission.Metadata
|
|
err = json.Unmarshal(body, &m)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return &m, nil
|
|
}
|
|
|
|
func (c *Client) MessageQueueTriggerDelete(m *fission.Metadata) error {
|
|
relativeUrl := fmt.Sprintf("triggers/messagequeue/%v", m.Name)
|
|
if len(m.Uid) > 0 {
|
|
relativeUrl += fmt.Sprintf("?uid=%v", m.Uid)
|
|
}
|
|
err := c.delete(relativeUrl)
|
|
return err
|
|
}
|
|
|
|
func (c *Client) MessageQueueTriggerList(mqType string) ([]fission.MessageQueueTrigger, error) {
|
|
relativeUrl := "triggers/messagequeue"
|
|
if len(mqType) > 0 {
|
|
relativeUrl += fmt.Sprintf("?mqtype=%v", mqType)
|
|
}
|
|
|
|
resp, err := http.Get(c.url(relativeUrl))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer resp.Body.Close()
|
|
|
|
body, err := c.handleResponse(resp)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
triggers := make([]fission.MessageQueueTrigger, 0)
|
|
err = json.Unmarshal(body, &triggers)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return triggers, nil
|
|
}
|