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e614367cbf
### Describe Your Changes
Related issue: #7199
This is the initial version of the integration tests for cluster. See
`README.md` for details.
Currently cluster only, but it can also be used for vm-single if needed.
The code has been added to the apptest package that resides in the root
directory of the VM codebase. This is done to exclude the integration
tests from regular testing build targets because:
- Most of the test variants do not apply to integration testing (such as
pure or race).
- The integtation tests may also be slow because each test must wait for
2 seconds so vmstorage flushes pending content). It may be okay when
there are a few tests but when there is a 100 of them running tests will
require much more time which will affect the developer wait time and CI
workflows.
- Finally, the integration tests may be flaky especially short term.
An alternative approach would be placing apptest under app package and
exclude apptest from packages under test, but that is not trivial.
The integration tests rely on retrieving some application runtime info
from the application logs, namely the application's host:port. Therefore
some changes to lib/httpserver/httpserver.go were necessary, such as
reporting the effective host:port instead the one from the flag.
### Checklist
The following checks are **mandatory**:
- [x] My change adheres [VictoriaMetrics contributing
guidelines](https://docs.victoriametrics.com/contributing/).
---------
Signed-off-by: Artem Fetishev <rtm@victoriametrics.com>
(cherry picked from commit d7b3589dbd)
78 lines
2.2 KiB
Go
78 lines
2.2 KiB
Go
package apptest
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import (
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"fmt"
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"net/http"
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"regexp"
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"strings"
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"testing"
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)
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// Vminsert holds the state of a vminsert app and provides vminsert-specific
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// functions.
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type Vminsert struct {
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*app
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*ServesMetrics
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httpListenAddr string
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cli *Client
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}
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// MustStartVminsert is a test helper function that starts an instance of
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// vminsert and fails the test if the app fails to start.
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func MustStartVminsert(t *testing.T, instance string, flags []string, cli *Client) *Vminsert {
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t.Helper()
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app, err := StartVminsert(instance, flags, cli)
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if err != nil {
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t.Fatalf("Could not start %s: %v", instance, err)
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}
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return app
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}
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// StartVminsert starts an instance of vminsert with the given flags. It also
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// sets the default flags and populates the app instance state with runtime
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// values extracted from the application log (such as httpListenAddr)
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func StartVminsert(instance string, flags []string, cli *Client) (*Vminsert, error) {
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app, stderrExtracts, err := startApp(instance, "../../bin/vminsert", flags, &appOptions{
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defaultFlags: map[string]string{
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"-httpListenAddr": "127.0.0.1:0",
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},
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extractREs: []*regexp.Regexp{
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httpListenAddrRE,
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},
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})
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if err != nil {
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return nil, err
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}
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return &Vminsert{
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app: app,
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ServesMetrics: &ServesMetrics{
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metricsURL: fmt.Sprintf("http://%s/metrics", stderrExtracts[0]),
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cli: cli,
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},
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httpListenAddr: stderrExtracts[0],
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cli: cli,
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}, nil
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}
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// PrometheusAPIV1ImportPrometheus is a test helper function that inserts a
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// collection of records in Prometheus text exposition format for the given
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// tenant by sending a HTTP POST request to
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// /prometheus/api/v1/import/prometheus vminsert endpoint.
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//
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// See https://docs.victoriametrics.com/url-examples/#apiv1importprometheus
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func (app *Vminsert) PrometheusAPIV1ImportPrometheus(t *testing.T, tenant string, records []string) {
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t.Helper()
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url := fmt.Sprintf("http://%s/insert/%s/prometheus/api/v1/import/prometheus", app.httpListenAddr, tenant)
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app.cli.Post(t, url, "text/plain", strings.Join(records, "\n"), http.StatusNoContent)
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}
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// String returns the string representation of the vminsert app state.
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func (app *Vminsert) String() string {
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return fmt.Sprintf("{app: %s httpListenAddr: %q}", app.app, app.httpListenAddr)
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}
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