Merge pull request #291 from andrestc/query-label-values
api: reorganize API package and add label values endpoint implementation
This commit is contained in:
Julius Volz
GitHub
commit
7d9484283e
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@ -0,0 +1,131 @@
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// Copyright 2015 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
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||||
|
||||
// +build go1.7
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// Package api provides clients for the HTTP APIs.
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package api
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import (
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"context"
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"io/ioutil"
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"net"
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"net/http"
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"net/url"
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"path"
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"strings"
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"time"
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)
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// DefaultRoundTripper is used if no RoundTripper is set in Config.
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var DefaultRoundTripper http.RoundTripper = &http.Transport{
|
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Proxy: http.ProxyFromEnvironment,
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Dial: (&net.Dialer{
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Timeout: 30 * time.Second,
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KeepAlive: 30 * time.Second,
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}).Dial,
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TLSHandshakeTimeout: 10 * time.Second,
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}
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// Config defines configuration parameters for a new client.
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type Config struct {
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||||
// The address of the Prometheus to connect to.
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Address string
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// RoundTripper is used by the Client to drive HTTP requests. If not
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// provided, DefaultRoundTripper will be used.
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RoundTripper http.RoundTripper
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}
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func (cfg *Config) roundTripper() http.RoundTripper {
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if cfg.RoundTripper == nil {
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return DefaultRoundTripper
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}
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return cfg.RoundTripper
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}
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|
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// Client is the interface for an API client.
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type Client interface {
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URL(ep string, args map[string]string) *url.URL
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Do(context.Context, *http.Request) (*http.Response, []byte, error)
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}
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|
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// NewClient returns a new Client.
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//
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||||
// It is safe to use the returned Client from multiple goroutines.
|
||||
func NewClient(cfg Config) (Client, error) {
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u, err := url.Parse(cfg.Address)
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if err != nil {
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return nil, err
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}
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u.Path = strings.TrimRight(u.Path, "/")
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return &httpClient{
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endpoint: u,
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client: http.Client{Transport: cfg.roundTripper()},
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}, nil
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}
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type httpClient struct {
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endpoint *url.URL
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client http.Client
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}
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func (c *httpClient) URL(ep string, args map[string]string) *url.URL {
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p := path.Join(c.endpoint.Path, ep)
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for arg, val := range args {
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arg = ":" + arg
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p = strings.Replace(p, arg, val, -1)
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}
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u := *c.endpoint
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u.Path = p
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return &u
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}
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func (c *httpClient) Do(ctx context.Context, req *http.Request) (*http.Response, []byte, error) {
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if ctx != nil {
|
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req = req.WithContext(ctx)
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}
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resp, err := c.client.Do(req)
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defer func() {
|
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if resp != nil {
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resp.Body.Close()
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}
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}()
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|
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if err != nil {
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return nil, nil, err
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}
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var body []byte
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done := make(chan struct{})
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go func() {
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body, err = ioutil.ReadAll(resp.Body)
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close(done)
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}()
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select {
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case <-ctx.Done():
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err = resp.Body.Close()
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<-done
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if err == nil {
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err = ctx.Err()
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}
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case <-done:
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}
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return resp, body, err
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||||
}
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@ -0,0 +1,115 @@
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|||
// Copyright 2015 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
// +build go1.7
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package api
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import (
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"net/http"
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"net/url"
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"testing"
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)
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func TestConfig(t *testing.T) {
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c := Config{}
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if c.roundTripper() != DefaultRoundTripper {
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t.Fatalf("expected default roundtripper for nil RoundTripper field")
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}
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}
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func TestClientURL(t *testing.T) {
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tests := []struct {
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address string
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endpoint string
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args map[string]string
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expected string
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}{
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{
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address: "http://localhost:9090",
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endpoint: "/test",
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expected: "http://localhost:9090/test",
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},
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{
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address: "http://localhost",
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endpoint: "/test",
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expected: "http://localhost/test",
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},
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{
|
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address: "http://localhost:9090",
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endpoint: "test",
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expected: "http://localhost:9090/test",
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},
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{
|
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address: "http://localhost:9090/prefix",
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endpoint: "/test",
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expected: "http://localhost:9090/prefix/test",
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},
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{
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address: "https://localhost:9090/",
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endpoint: "/test/",
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expected: "https://localhost:9090/test",
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},
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{
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address: "http://localhost:9090",
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endpoint: "/test/:param",
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args: map[string]string{
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"param": "content",
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},
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expected: "http://localhost:9090/test/content",
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},
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{
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address: "http://localhost:9090",
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endpoint: "/test/:param/more/:param",
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args: map[string]string{
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"param": "content",
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},
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expected: "http://localhost:9090/test/content/more/content",
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},
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{
|
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address: "http://localhost:9090",
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endpoint: "/test/:param/more/:foo",
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args: map[string]string{
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"param": "content",
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"foo": "bar",
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},
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expected: "http://localhost:9090/test/content/more/bar",
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},
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{
|
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address: "http://localhost:9090",
|
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endpoint: "/test/:param",
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args: map[string]string{
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"nonexistant": "content",
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},
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expected: "http://localhost:9090/test/:param",
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},
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}
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|
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for _, test := range tests {
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ep, err := url.Parse(test.address)
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if err != nil {
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t.Fatal(err)
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}
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hclient := &httpClient{
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endpoint: ep,
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client: http.Client{Transport: DefaultRoundTripper},
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}
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u := hclient.URL(test.endpoint, test.args)
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if u.String() != test.expected {
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t.Errorf("unexpected result: got %s, want %s", u, test.expected)
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continue
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}
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}
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}
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|
|
@ -1,4 +1,4 @@
|
|||
// Copyright 2015 The Prometheus Authors
|
||||
// Copyright 2017 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
|
|
@ -11,35 +11,33 @@
|
|||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
// Package prometheus provides bindings to the Prometheus HTTP API:
|
||||
// +build go1.7
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||||
|
||||
// Package v1 provides bindings to the Prometheus HTTP API v1:
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||||
// http://prometheus.io/docs/querying/api/
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||||
package prometheus
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||||
package v1
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||||
|
||||
import (
|
||||
"context"
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"encoding/json"
|
||||
"fmt"
|
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"io/ioutil"
|
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"net"
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"net/http"
|
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"net/url"
|
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"path"
|
||||
"strconv"
|
||||
"strings"
|
||||
"time"
|
||||
|
||||
"github.com/prometheus/client_golang/api"
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||||
"github.com/prometheus/common/model"
|
||||
"golang.org/x/net/context"
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||||
"golang.org/x/net/context/ctxhttp"
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)
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|
||||
const (
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||||
statusAPIError = 422
|
||||
apiPrefix = "/api/v1"
|
||||
|
||||
epQuery = "/query"
|
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epQueryRange = "/query_range"
|
||||
epLabelValues = "/label/:name/values"
|
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epSeries = "/series"
|
||||
apiPrefix = "/api/v1"
|
||||
|
||||
epQuery = apiPrefix + "/query"
|
||||
epQueryRange = apiPrefix + "/query_range"
|
||||
epLabelValues = apiPrefix + "/label/:name/values"
|
||||
epSeries = apiPrefix + "/series"
|
||||
)
|
||||
|
||||
// ErrorType models the different API error types.
|
||||
|
|
@ -64,168 +62,6 @@ func (e *Error) Error() string {
|
|||
return fmt.Sprintf("%s: %s", e.Type, e.Msg)
|
||||
}
|
||||
|
||||
// CancelableTransport is like net.Transport but provides
|
||||
// per-request cancelation functionality.
|
||||
type CancelableTransport interface {
|
||||
http.RoundTripper
|
||||
CancelRequest(req *http.Request)
|
||||
}
|
||||
|
||||
// DefaultTransport is used if no Transport is set in Config.
|
||||
var DefaultTransport CancelableTransport = &http.Transport{
|
||||
Proxy: http.ProxyFromEnvironment,
|
||||
Dial: (&net.Dialer{
|
||||
Timeout: 30 * time.Second,
|
||||
KeepAlive: 30 * time.Second,
|
||||
}).Dial,
|
||||
TLSHandshakeTimeout: 10 * time.Second,
|
||||
}
|
||||
|
||||
// Config defines configuration parameters for a new client.
|
||||
type Config struct {
|
||||
// The address of the Prometheus to connect to.
|
||||
Address string
|
||||
|
||||
// Transport is used by the Client to drive HTTP requests. If not
|
||||
// provided, DefaultTransport will be used.
|
||||
Transport CancelableTransport
|
||||
}
|
||||
|
||||
func (cfg *Config) transport() CancelableTransport {
|
||||
if cfg.Transport == nil {
|
||||
return DefaultTransport
|
||||
}
|
||||
return cfg.Transport
|
||||
}
|
||||
|
||||
// Client is the interface for an API client.
|
||||
type Client interface {
|
||||
url(ep string, args map[string]string) *url.URL
|
||||
do(context.Context, *http.Request) (*http.Response, []byte, error)
|
||||
}
|
||||
|
||||
// New returns a new Client.
|
||||
//
|
||||
// It is safe to use the returned Client from multiple goroutines.
|
||||
func New(cfg Config) (Client, error) {
|
||||
u, err := url.Parse(cfg.Address)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
u.Path = strings.TrimRight(u.Path, "/") + apiPrefix
|
||||
|
||||
return &httpClient{
|
||||
endpoint: u,
|
||||
transport: cfg.transport(),
|
||||
}, nil
|
||||
}
|
||||
|
||||
type httpClient struct {
|
||||
endpoint *url.URL
|
||||
transport CancelableTransport
|
||||
}
|
||||
|
||||
func (c *httpClient) url(ep string, args map[string]string) *url.URL {
|
||||
p := path.Join(c.endpoint.Path, ep)
|
||||
|
||||
for arg, val := range args {
|
||||
arg = ":" + arg
|
||||
p = strings.Replace(p, arg, val, -1)
|
||||
}
|
||||
|
||||
u := *c.endpoint
|
||||
u.Path = p
|
||||
|
||||
return &u
|
||||
}
|
||||
|
||||
func (c *httpClient) do(ctx context.Context, req *http.Request) (*http.Response, []byte, error) {
|
||||
resp, err := ctxhttp.Do(ctx, &http.Client{Transport: c.transport}, req)
|
||||
|
||||
defer func() {
|
||||
if resp != nil {
|
||||
resp.Body.Close()
|
||||
}
|
||||
}()
|
||||
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
var body []byte
|
||||
done := make(chan struct{})
|
||||
go func() {
|
||||
body, err = ioutil.ReadAll(resp.Body)
|
||||
close(done)
|
||||
}()
|
||||
|
||||
select {
|
||||
case <-ctx.Done():
|
||||
err = resp.Body.Close()
|
||||
<-done
|
||||
if err == nil {
|
||||
err = ctx.Err()
|
||||
}
|
||||
case <-done:
|
||||
}
|
||||
|
||||
return resp, body, err
|
||||
}
|
||||
|
||||
// apiClient wraps a regular client and processes successful API responses.
|
||||
// Successful also includes responses that errored at the API level.
|
||||
type apiClient struct {
|
||||
Client
|
||||
}
|
||||
|
||||
type apiResponse struct {
|
||||
Status string `json:"status"`
|
||||
Data json.RawMessage `json:"data"`
|
||||
ErrorType ErrorType `json:"errorType"`
|
||||
Error string `json:"error"`
|
||||
}
|
||||
|
||||
func (c apiClient) do(ctx context.Context, req *http.Request) (*http.Response, []byte, error) {
|
||||
resp, body, err := c.Client.do(ctx, req)
|
||||
if err != nil {
|
||||
return resp, body, err
|
||||
}
|
||||
|
||||
code := resp.StatusCode
|
||||
|
||||
if code/100 != 2 && code != statusAPIError {
|
||||
return resp, body, &Error{
|
||||
Type: ErrBadResponse,
|
||||
Msg: fmt.Sprintf("bad response code %d", resp.StatusCode),
|
||||
}
|
||||
}
|
||||
|
||||
var result apiResponse
|
||||
|
||||
if err = json.Unmarshal(body, &result); err != nil {
|
||||
return resp, body, &Error{
|
||||
Type: ErrBadResponse,
|
||||
Msg: err.Error(),
|
||||
}
|
||||
}
|
||||
|
||||
if (code == statusAPIError) != (result.Status == "error") {
|
||||
err = &Error{
|
||||
Type: ErrBadResponse,
|
||||
Msg: "inconsistent body for response code",
|
||||
}
|
||||
}
|
||||
|
||||
if code == statusAPIError && result.Status == "error" {
|
||||
err = &Error{
|
||||
Type: result.ErrorType,
|
||||
Msg: result.Error,
|
||||
}
|
||||
}
|
||||
|
||||
return resp, []byte(result.Data), err
|
||||
}
|
||||
|
||||
// Range represents a sliced time range.
|
||||
type Range struct {
|
||||
// The boundaries of the time range.
|
||||
|
|
@ -234,6 +70,16 @@ type Range struct {
|
|||
Step time.Duration
|
||||
}
|
||||
|
||||
// API provides bindings for Prometheus's v1 API.
|
||||
type API interface {
|
||||
// Query performs a query for the given time.
|
||||
Query(ctx context.Context, query string, ts time.Time) (model.Value, error)
|
||||
// QueryRange performs a query for the given range.
|
||||
QueryRange(ctx context.Context, query string, r Range) (model.Value, error)
|
||||
// LabelValues performs a query for the values of the given label.
|
||||
LabelValues(ctx context.Context, label string) (model.LabelValues, error)
|
||||
}
|
||||
|
||||
// queryResult contains result data for a query.
|
||||
type queryResult struct {
|
||||
Type model.ValueType `json:"resultType"`
|
||||
|
|
@ -276,27 +122,19 @@ func (qr *queryResult) UnmarshalJSON(b []byte) error {
|
|||
return err
|
||||
}
|
||||
|
||||
// QueryAPI provides bindings the Prometheus's query API.
|
||||
type QueryAPI interface {
|
||||
// Query performs a query for the given time.
|
||||
Query(ctx context.Context, query string, ts time.Time) (model.Value, error)
|
||||
// Query performs a query for the given range.
|
||||
QueryRange(ctx context.Context, query string, r Range) (model.Value, error)
|
||||
}
|
||||
|
||||
// NewQueryAPI returns a new QueryAPI for the client.
|
||||
// NewAPI returns a new API for the client.
|
||||
//
|
||||
// It is safe to use the returned QueryAPI from multiple goroutines.
|
||||
func NewQueryAPI(c Client) QueryAPI {
|
||||
return &httpQueryAPI{client: apiClient{c}}
|
||||
// It is safe to use the returned API from multiple goroutines.
|
||||
func NewAPI(c api.Client) API {
|
||||
return &httpAPI{client: apiClient{c}}
|
||||
}
|
||||
|
||||
type httpQueryAPI struct {
|
||||
client Client
|
||||
type httpAPI struct {
|
||||
client api.Client
|
||||
}
|
||||
|
||||
func (h *httpQueryAPI) Query(ctx context.Context, query string, ts time.Time) (model.Value, error) {
|
||||
u := h.client.url(epQuery, nil)
|
||||
func (h *httpAPI) Query(ctx context.Context, query string, ts time.Time) (model.Value, error) {
|
||||
u := h.client.URL(epQuery, nil)
|
||||
q := u.Query()
|
||||
|
||||
q.Set("query", query)
|
||||
|
|
@ -304,9 +142,12 @@ func (h *httpQueryAPI) Query(ctx context.Context, query string, ts time.Time) (m
|
|||
|
||||
u.RawQuery = q.Encode()
|
||||
|
||||
req, _ := http.NewRequest("GET", u.String(), nil)
|
||||
req, err := http.NewRequest("GET", u.String(), nil)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
_, body, err := h.client.do(ctx, req)
|
||||
_, body, err := h.client.Do(ctx, req)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
|
@ -317,8 +158,8 @@ func (h *httpQueryAPI) Query(ctx context.Context, query string, ts time.Time) (m
|
|||
return model.Value(qres.v), err
|
||||
}
|
||||
|
||||
func (h *httpQueryAPI) QueryRange(ctx context.Context, query string, r Range) (model.Value, error) {
|
||||
u := h.client.url(epQueryRange, nil)
|
||||
func (h *httpAPI) QueryRange(ctx context.Context, query string, r Range) (model.Value, error) {
|
||||
u := h.client.URL(epQueryRange, nil)
|
||||
q := u.Query()
|
||||
|
||||
var (
|
||||
|
|
@ -334,9 +175,12 @@ func (h *httpQueryAPI) QueryRange(ctx context.Context, query string, r Range) (m
|
|||
|
||||
u.RawQuery = q.Encode()
|
||||
|
||||
req, _ := http.NewRequest("GET", u.String(), nil)
|
||||
req, err := http.NewRequest("GET", u.String(), nil)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
_, body, err := h.client.do(ctx, req)
|
||||
_, body, err := h.client.Do(ctx, req)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
|
@ -346,3 +190,72 @@ func (h *httpQueryAPI) QueryRange(ctx context.Context, query string, r Range) (m
|
|||
|
||||
return model.Value(qres.v), err
|
||||
}
|
||||
|
||||
func (h *httpAPI) LabelValues(ctx context.Context, label string) (model.LabelValues, error) {
|
||||
u := h.client.URL(epLabelValues, map[string]string{"name": label})
|
||||
req, err := http.NewRequest(http.MethodGet, u.String(), nil)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
_, body, err := h.client.Do(ctx, req)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
var labelValues model.LabelValues
|
||||
err = json.Unmarshal(body, &labelValues)
|
||||
return labelValues, err
|
||||
}
|
||||
|
||||
// apiClient wraps a regular client and processes successful API responses.
|
||||
// Successful also includes responses that errored at the API level.
|
||||
type apiClient struct {
|
||||
api.Client
|
||||
}
|
||||
|
||||
type apiResponse struct {
|
||||
Status string `json:"status"`
|
||||
Data json.RawMessage `json:"data"`
|
||||
ErrorType ErrorType `json:"errorType"`
|
||||
Error string `json:"error"`
|
||||
}
|
||||
|
||||
func (c apiClient) Do(ctx context.Context, req *http.Request) (*http.Response, []byte, error) {
|
||||
resp, body, err := c.Client.Do(ctx, req)
|
||||
if err != nil {
|
||||
return resp, body, err
|
||||
}
|
||||
|
||||
code := resp.StatusCode
|
||||
|
||||
if code/100 != 2 && code != statusAPIError {
|
||||
return resp, body, &Error{
|
||||
Type: ErrBadResponse,
|
||||
Msg: fmt.Sprintf("bad response code %d", resp.StatusCode),
|
||||
}
|
||||
}
|
||||
|
||||
var result apiResponse
|
||||
|
||||
if err = json.Unmarshal(body, &result); err != nil {
|
||||
return resp, body, &Error{
|
||||
Type: ErrBadResponse,
|
||||
Msg: err.Error(),
|
||||
}
|
||||
}
|
||||
|
||||
if (code == statusAPIError) != (result.Status == "error") {
|
||||
err = &Error{
|
||||
Type: ErrBadResponse,
|
||||
Msg: "inconsistent body for response code",
|
||||
}
|
||||
}
|
||||
|
||||
if code == statusAPIError && result.Status == "error" {
|
||||
err = &Error{
|
||||
Type: result.ErrorType,
|
||||
Msg: result.Error,
|
||||
}
|
||||
}
|
||||
|
||||
return resp, []byte(result.Data), err
|
||||
}
|
||||
|
|
@ -1,4 +1,4 @@
|
|||
// Copyright 2015 The Prometheus Authors
|
||||
// Copyright 2017 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
|
|
@ -11,118 +11,203 @@
|
|||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package prometheus
|
||||
// +build go1.7
|
||||
|
||||
package v1
|
||||
|
||||
import (
|
||||
"context"
|
||||
"encoding/json"
|
||||
"fmt"
|
||||
"net/http"
|
||||
"net/url"
|
||||
"reflect"
|
||||
"strings"
|
||||
"testing"
|
||||
"time"
|
||||
|
||||
"github.com/prometheus/common/model"
|
||||
"golang.org/x/net/context"
|
||||
)
|
||||
|
||||
func TestConfig(t *testing.T) {
|
||||
c := Config{}
|
||||
if c.transport() != DefaultTransport {
|
||||
t.Fatalf("expected default transport for nil Transport field")
|
||||
}
|
||||
type apiTest struct {
|
||||
do func() (interface{}, error)
|
||||
inErr error
|
||||
inRes interface{}
|
||||
|
||||
reqPath string
|
||||
reqParam url.Values
|
||||
reqMethod string
|
||||
res interface{}
|
||||
err error
|
||||
}
|
||||
|
||||
func TestClientURL(t *testing.T) {
|
||||
tests := []struct {
|
||||
address string
|
||||
endpoint string
|
||||
args map[string]string
|
||||
expected string
|
||||
}{
|
||||
type apiTestClient struct {
|
||||
*testing.T
|
||||
curTest apiTest
|
||||
}
|
||||
|
||||
func (c *apiTestClient) URL(ep string, args map[string]string) *url.URL {
|
||||
path := ep
|
||||
for k, v := range args {
|
||||
path = strings.Replace(path, ":"+k, v, -1)
|
||||
}
|
||||
u := &url.URL{
|
||||
Host: "test:9090",
|
||||
Path: path,
|
||||
}
|
||||
return u
|
||||
}
|
||||
|
||||
func (c *apiTestClient) Do(ctx context.Context, req *http.Request) (*http.Response, []byte, error) {
|
||||
|
||||
test := c.curTest
|
||||
|
||||
if req.URL.Path != test.reqPath {
|
||||
c.Errorf("unexpected request path: want %s, got %s", test.reqPath, req.URL.Path)
|
||||
}
|
||||
if req.Method != test.reqMethod {
|
||||
c.Errorf("unexpected request method: want %s, got %s", test.reqMethod, req.Method)
|
||||
}
|
||||
|
||||
b, err := json.Marshal(test.inRes)
|
||||
if err != nil {
|
||||
c.Fatal(err)
|
||||
}
|
||||
|
||||
resp := &http.Response{}
|
||||
if test.inErr != nil {
|
||||
resp.StatusCode = statusAPIError
|
||||
} else {
|
||||
resp.StatusCode = http.StatusOK
|
||||
}
|
||||
|
||||
return resp, b, test.inErr
|
||||
}
|
||||
|
||||
func TestAPIs(t *testing.T) {
|
||||
|
||||
testTime := time.Now()
|
||||
|
||||
client := &apiTestClient{T: t}
|
||||
|
||||
queryAPI := &httpAPI{
|
||||
client: client,
|
||||
}
|
||||
|
||||
doQuery := func(q string, ts time.Time) func() (interface{}, error) {
|
||||
return func() (interface{}, error) {
|
||||
return queryAPI.Query(context.Background(), q, ts)
|
||||
}
|
||||
}
|
||||
|
||||
doQueryRange := func(q string, rng Range) func() (interface{}, error) {
|
||||
return func() (interface{}, error) {
|
||||
return queryAPI.QueryRange(context.Background(), q, rng)
|
||||
}
|
||||
}
|
||||
|
||||
doLabelValues := func(label string) func() (interface{}, error) {
|
||||
return func() (interface{}, error) {
|
||||
return queryAPI.LabelValues(context.Background(), label)
|
||||
}
|
||||
}
|
||||
|
||||
queryTests := []apiTest{
|
||||
{
|
||||
address: "http://localhost:9090",
|
||||
endpoint: "/test",
|
||||
expected: "http://localhost:9090/test",
|
||||
},
|
||||
{
|
||||
address: "http://localhost",
|
||||
endpoint: "/test",
|
||||
expected: "http://localhost/test",
|
||||
},
|
||||
{
|
||||
address: "http://localhost:9090",
|
||||
endpoint: "test",
|
||||
expected: "http://localhost:9090/test",
|
||||
},
|
||||
{
|
||||
address: "http://localhost:9090/prefix",
|
||||
endpoint: "/test",
|
||||
expected: "http://localhost:9090/prefix/test",
|
||||
},
|
||||
{
|
||||
address: "https://localhost:9090/",
|
||||
endpoint: "/test/",
|
||||
expected: "https://localhost:9090/test",
|
||||
},
|
||||
{
|
||||
address: "http://localhost:9090",
|
||||
endpoint: "/test/:param",
|
||||
args: map[string]string{
|
||||
"param": "content",
|
||||
do: doQuery("2", testTime),
|
||||
inRes: &queryResult{
|
||||
Type: model.ValScalar,
|
||||
Result: &model.Scalar{
|
||||
Value: 2,
|
||||
Timestamp: model.TimeFromUnix(testTime.Unix()),
|
||||
},
|
||||
},
|
||||
|
||||
reqMethod: "GET",
|
||||
reqPath: "/api/v1/query",
|
||||
reqParam: url.Values{
|
||||
"query": []string{"2"},
|
||||
"time": []string{testTime.Format(time.RFC3339Nano)},
|
||||
},
|
||||
res: &model.Scalar{
|
||||
Value: 2,
|
||||
Timestamp: model.TimeFromUnix(testTime.Unix()),
|
||||
},
|
||||
expected: "http://localhost:9090/test/content",
|
||||
},
|
||||
{
|
||||
address: "http://localhost:9090",
|
||||
endpoint: "/test/:param/more/:param",
|
||||
args: map[string]string{
|
||||
"param": "content",
|
||||
do: doQuery("2", testTime),
|
||||
inErr: fmt.Errorf("some error"),
|
||||
|
||||
reqMethod: "GET",
|
||||
reqPath: "/api/v1/query",
|
||||
reqParam: url.Values{
|
||||
"query": []string{"2"},
|
||||
"time": []string{testTime.Format(time.RFC3339Nano)},
|
||||
},
|
||||
expected: "http://localhost:9090/test/content/more/content",
|
||||
err: fmt.Errorf("some error"),
|
||||
},
|
||||
|
||||
{
|
||||
address: "http://localhost:9090",
|
||||
endpoint: "/test/:param/more/:foo",
|
||||
args: map[string]string{
|
||||
"param": "content",
|
||||
"foo": "bar",
|
||||
do: doQueryRange("2", Range{
|
||||
Start: testTime.Add(-time.Minute),
|
||||
End: testTime,
|
||||
Step: time.Minute,
|
||||
}),
|
||||
inErr: fmt.Errorf("some error"),
|
||||
|
||||
reqMethod: "GET",
|
||||
reqPath: "/api/v1/query_range",
|
||||
reqParam: url.Values{
|
||||
"query": []string{"2"},
|
||||
"start": []string{testTime.Add(-time.Minute).Format(time.RFC3339Nano)},
|
||||
"end": []string{testTime.Format(time.RFC3339Nano)},
|
||||
"step": []string{time.Minute.String()},
|
||||
},
|
||||
expected: "http://localhost:9090/test/content/more/bar",
|
||||
err: fmt.Errorf("some error"),
|
||||
},
|
||||
|
||||
{
|
||||
address: "http://localhost:9090",
|
||||
endpoint: "/test/:param",
|
||||
args: map[string]string{
|
||||
"nonexistant": "content",
|
||||
},
|
||||
expected: "http://localhost:9090/test/:param",
|
||||
do: doLabelValues("mylabel"),
|
||||
inRes: []string{"val1", "val2"},
|
||||
reqMethod: "GET",
|
||||
reqPath: "/api/v1/label/mylabel/values",
|
||||
res: model.LabelValues{"val1", "val2"},
|
||||
},
|
||||
|
||||
{
|
||||
do: doLabelValues("mylabel"),
|
||||
inErr: fmt.Errorf("some error"),
|
||||
reqMethod: "GET",
|
||||
reqPath: "/api/v1/label/mylabel/values",
|
||||
err: fmt.Errorf("some error"),
|
||||
},
|
||||
}
|
||||
|
||||
var tests []apiTest
|
||||
tests = append(tests, queryTests...)
|
||||
|
||||
for _, test := range tests {
|
||||
ep, err := url.Parse(test.address)
|
||||
client.curTest = test
|
||||
|
||||
res, err := test.do()
|
||||
|
||||
if test.err != nil {
|
||||
if err == nil {
|
||||
t.Errorf("expected error %q but got none", test.err)
|
||||
continue
|
||||
}
|
||||
if err.Error() != test.err.Error() {
|
||||
t.Errorf("unexpected error: want %s, got %s", test.err, err)
|
||||
}
|
||||
continue
|
||||
}
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
hclient := &httpClient{
|
||||
endpoint: ep,
|
||||
transport: DefaultTransport,
|
||||
}
|
||||
|
||||
u := hclient.url(test.endpoint, test.args)
|
||||
if u.String() != test.expected {
|
||||
t.Errorf("unexpected result: got %s, want %s", u, test.expected)
|
||||
t.Errorf("unexpected error: %s", err)
|
||||
continue
|
||||
}
|
||||
|
||||
// The apiClient must return exactly the same result as the httpClient.
|
||||
aclient := &apiClient{hclient}
|
||||
|
||||
u = aclient.url(test.endpoint, test.args)
|
||||
if u.String() != test.expected {
|
||||
t.Errorf("unexpected result: got %s, want %s", u, test.expected)
|
||||
if !reflect.DeepEqual(res, test.res) {
|
||||
t.Errorf("unexpected result: want %v, got %v", test.res, res)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -141,11 +226,11 @@ type apiClientTest struct {
|
|||
err *Error
|
||||
}
|
||||
|
||||
func (c *testClient) url(ep string, args map[string]string) *url.URL {
|
||||
func (c *testClient) URL(ep string, args map[string]string) *url.URL {
|
||||
return nil
|
||||
}
|
||||
|
||||
func (c *testClient) do(ctx context.Context, req *http.Request) (*http.Response, []byte, error) {
|
||||
func (c *testClient) Do(ctx context.Context, req *http.Request) (*http.Response, []byte, error) {
|
||||
if ctx == nil {
|
||||
c.Fatalf("context was not passed down")
|
||||
}
|
||||
|
|
@ -271,7 +356,7 @@ func TestAPIClientDo(t *testing.T) {
|
|||
|
||||
tc.ch <- test
|
||||
|
||||
_, body, err := client.do(context.Background(), tc.req)
|
||||
_, body, err := client.Do(context.Background(), tc.req)
|
||||
|
||||
if test.err != nil {
|
||||
if err == nil {
|
||||
|
|
@ -294,160 +379,3 @@ func TestAPIClientDo(t *testing.T) {
|
|||
}
|
||||
}
|
||||
}
|
||||
|
||||
type apiTestClient struct {
|
||||
*testing.T
|
||||
curTest apiTest
|
||||
}
|
||||
|
||||
type apiTest struct {
|
||||
do func() (interface{}, error)
|
||||
inErr error
|
||||
inRes interface{}
|
||||
|
||||
reqPath string
|
||||
reqParam url.Values
|
||||
reqMethod string
|
||||
res interface{}
|
||||
err error
|
||||
}
|
||||
|
||||
func (c *apiTestClient) url(ep string, args map[string]string) *url.URL {
|
||||
u := &url.URL{
|
||||
Host: "test:9090",
|
||||
Path: apiPrefix + ep,
|
||||
}
|
||||
return u
|
||||
}
|
||||
|
||||
func (c *apiTestClient) do(ctx context.Context, req *http.Request) (*http.Response, []byte, error) {
|
||||
|
||||
test := c.curTest
|
||||
|
||||
if req.URL.Path != test.reqPath {
|
||||
c.Errorf("unexpected request path: want %s, got %s", test.reqPath, req.URL.Path)
|
||||
}
|
||||
if req.Method != test.reqMethod {
|
||||
c.Errorf("unexpected request method: want %s, got %s", test.reqMethod, req.Method)
|
||||
}
|
||||
|
||||
b, err := json.Marshal(test.inRes)
|
||||
if err != nil {
|
||||
c.Fatal(err)
|
||||
}
|
||||
|
||||
resp := &http.Response{}
|
||||
if test.inErr != nil {
|
||||
resp.StatusCode = statusAPIError
|
||||
} else {
|
||||
resp.StatusCode = http.StatusOK
|
||||
}
|
||||
|
||||
return resp, b, test.inErr
|
||||
}
|
||||
|
||||
func TestAPIs(t *testing.T) {
|
||||
|
||||
testTime := time.Now()
|
||||
|
||||
client := &apiTestClient{T: t}
|
||||
|
||||
queryAPI := &httpQueryAPI{
|
||||
client: client,
|
||||
}
|
||||
|
||||
doQuery := func(q string, ts time.Time) func() (interface{}, error) {
|
||||
return func() (interface{}, error) {
|
||||
return queryAPI.Query(context.Background(), q, ts)
|
||||
}
|
||||
}
|
||||
|
||||
doQueryRange := func(q string, rng Range) func() (interface{}, error) {
|
||||
return func() (interface{}, error) {
|
||||
return queryAPI.QueryRange(context.Background(), q, rng)
|
||||
}
|
||||
}
|
||||
|
||||
queryTests := []apiTest{
|
||||
{
|
||||
do: doQuery("2", testTime),
|
||||
inRes: &queryResult{
|
||||
Type: model.ValScalar,
|
||||
Result: &model.Scalar{
|
||||
Value: 2,
|
||||
Timestamp: model.TimeFromUnix(testTime.Unix()),
|
||||
},
|
||||
},
|
||||
|
||||
reqMethod: "GET",
|
||||
reqPath: "/api/v1/query",
|
||||
reqParam: url.Values{
|
||||
"query": []string{"2"},
|
||||
"time": []string{testTime.Format(time.RFC3339Nano)},
|
||||
},
|
||||
res: &model.Scalar{
|
||||
Value: 2,
|
||||
Timestamp: model.TimeFromUnix(testTime.Unix()),
|
||||
},
|
||||
},
|
||||
{
|
||||
do: doQuery("2", testTime),
|
||||
inErr: fmt.Errorf("some error"),
|
||||
|
||||
reqMethod: "GET",
|
||||
reqPath: "/api/v1/query",
|
||||
reqParam: url.Values{
|
||||
"query": []string{"2"},
|
||||
"time": []string{testTime.Format(time.RFC3339Nano)},
|
||||
},
|
||||
err: fmt.Errorf("some error"),
|
||||
},
|
||||
|
||||
{
|
||||
do: doQueryRange("2", Range{
|
||||
Start: testTime.Add(-time.Minute),
|
||||
End: testTime,
|
||||
Step: time.Minute,
|
||||
}),
|
||||
inErr: fmt.Errorf("some error"),
|
||||
|
||||
reqMethod: "GET",
|
||||
reqPath: "/api/v1/query_range",
|
||||
reqParam: url.Values{
|
||||
"query": []string{"2"},
|
||||
"start": []string{testTime.Add(-time.Minute).Format(time.RFC3339Nano)},
|
||||
"end": []string{testTime.Format(time.RFC3339Nano)},
|
||||
"step": []string{time.Minute.String()},
|
||||
},
|
||||
err: fmt.Errorf("some error"),
|
||||
},
|
||||
}
|
||||
|
||||
var tests []apiTest
|
||||
tests = append(tests, queryTests...)
|
||||
|
||||
for _, test := range tests {
|
||||
client.curTest = test
|
||||
|
||||
res, err := test.do()
|
||||
|
||||
if test.err != nil {
|
||||
if err == nil {
|
||||
t.Errorf("expected error %q but got none", test.err)
|
||||
continue
|
||||
}
|
||||
if err.Error() != test.err.Error() {
|
||||
t.Errorf("unexpected error: want %s, got %s", test.err, err)
|
||||
}
|
||||
continue
|
||||
}
|
||||
if err != nil {
|
||||
t.Errorf("unexpected error: %s", err)
|
||||
continue
|
||||
}
|
||||
|
||||
if !reflect.DeepEqual(res, test.res) {
|
||||
t.Errorf("unexpected result: want %v, got %v", test.res, res)
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue