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[MM-60593] Scrape Calls metrics (#35)
* Scrape Calls metrics * Use dedicated job label for Calls * Regenerate targets in non-HA case to cover other plugins * Tests
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| Original file line number | Diff line number | Diff line change |
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| @@ -1,4 +1,5 @@ | ||
| dist/ | ||
| bin/ | ||
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| # Mac | ||
| .DS_Store | ||
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,8 @@ | ||
| quiet: False | ||
| with-expecter: true | ||
| dir: "server/mocks/{{.PackagePath}}" | ||
| packages: | ||
| github.com/mattermost/mattermost/server/public/plugin: | ||
| config: | ||
| interfaces: | ||
| API: |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,94 @@ | ||
| package main | ||
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| import ( | ||
| "context" | ||
| "fmt" | ||
| "net" | ||
| "net/url" | ||
| "time" | ||
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| promModel "github.com/prometheus/common/model" | ||
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| "github.com/mattermost/mattermost/server/public/model" | ||
| ) | ||
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| const ( | ||
| callsPluginID = "com.mattermost.calls" | ||
| ) | ||
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| func resolveURL(u string, timeout time.Duration) ([]net.IP, string, error) { | ||
| parsed, err := url.Parse(u) | ||
| if err != nil { | ||
| return nil, "", fmt.Errorf("failed to parse url: %w", err) | ||
| } | ||
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| host, port, err := net.SplitHostPort(parsed.Host) | ||
| if err != nil { | ||
| return nil, "", fmt.Errorf("failed to split host/port: %w", err) | ||
| } | ||
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| ctx, cancel := context.WithTimeout(context.Background(), timeout) | ||
| defer cancel() | ||
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| ips, err := net.DefaultResolver.LookupIP(ctx, "ip4", host) | ||
| if err != nil { | ||
| return nil, "", fmt.Errorf("failed to lookup ips: %w", err) | ||
| } | ||
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| return ips, port, nil | ||
| } | ||
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| func (p *Plugin) generateCallsTargets(appCfg *model.Config, host, port string, nodes []*model.ClusterDiscovery) ([]promModel.LabelSet, error) { | ||
| // First, figure out if Calls is running. If so, add the plugin metrics endpoint to the targets. | ||
| // Also, check if the external RTCD service is configured, in which case add its endpoints to targets. | ||
| status, err := p.API.GetPluginStatus(callsPluginID) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("generateCallsTargets: failed to get calls plugin status: %w", err) | ||
| } | ||
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| if status.State != model.PluginStateRunning { | ||
| p.API.LogDebug("generateCallsTargets: calls plugin is not running") | ||
| return nil, nil | ||
| } | ||
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| p.API.LogDebug("generateCallsTargets: calls plugin running, generating targets") | ||
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| var targets []promModel.LabelSet | ||
| if len(nodes) < 2 { | ||
| targets = []promModel.LabelSet{ | ||
| { | ||
| promModel.AddressLabel: promModel.LabelValue(net.JoinHostPort(host, port)), | ||
| promModel.MetricsPathLabel: promModel.LabelValue(fmt.Sprintf("/plugins/%s/metrics", callsPluginID)), | ||
| promModel.JobLabel: "calls", | ||
| }, | ||
| } | ||
| } else { | ||
| for i := range nodes { | ||
| targets = append(targets, promModel.LabelSet{ | ||
| promModel.AddressLabel: promModel.LabelValue(net.JoinHostPort(nodes[i].Hostname, port)), | ||
| promModel.MetricsPathLabel: promModel.LabelValue(fmt.Sprintf("/plugins/%s/metrics", callsPluginID)), | ||
| promModel.JobLabel: "calls", | ||
| }) | ||
| } | ||
| } | ||
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| if appCfg.PluginSettings.Plugins[callsPluginID] != nil { | ||
| rtcdURL, _ := appCfg.PluginSettings.Plugins[callsPluginID]["rtcdserviceurl"].(string) | ||
| if rtcdURL != "" { | ||
| // Since RTCD can be DNS load balanced, we need to resolve its hostname to figure out if there's more than a single node behind it. | ||
| ips, port, err := resolveURL(rtcdURL, 5*time.Second) | ||
| if err != nil { | ||
| p.API.LogWarn("generateCallsTargets: failed to resolve rtcd URL", "err", err.Error()) | ||
| } | ||
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| for _, ip := range ips { | ||
| targets = append(targets, promModel.LabelSet{ | ||
| promModel.AddressLabel: promModel.LabelValue(net.JoinHostPort(ip.String(), port)), | ||
| promModel.JobLabel: "calls", | ||
| }) | ||
| } | ||
| } | ||
| } | ||
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| return targets, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,134 @@ | ||
| package main | ||
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| import ( | ||
| "net/http" | ||
| "testing" | ||
| "time" | ||
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| "github.com/stretchr/testify/require" | ||
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| "github.com/mattermost/mattermost/server/public/model" | ||
| "github.com/mattermost/mattermost/server/public/plugin" | ||
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| promModel "github.com/prometheus/common/model" | ||
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| pluginMocks "github.com/mattermost/mattermost-plugin-metrics/server/mocks/github.com/mattermost/mattermost/server/public/plugin" | ||
| ) | ||
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| func TestResolveURL(t *testing.T) { | ||
| ips, port, err := resolveURL("https://localhost:8045", time.Second) | ||
| require.NoError(t, err) | ||
| require.NotEmpty(t, ips) | ||
| require.Equal(t, "127.0.0.1", ips[0].String()) | ||
| require.Equal(t, "8045", port) | ||
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| ips, port, err = resolveURL("http://127.0.0.1:8055", time.Second) | ||
| require.NoError(t, err) | ||
| require.NotEmpty(t, ips) | ||
| require.Equal(t, "127.0.0.1", ips[0].String()) | ||
| require.Equal(t, "8055", port) | ||
| } | ||
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| func TestGenerateCallsTargets(t *testing.T) { | ||
| mockAPI := &pluginMocks.MockAPI{} | ||
| defer mockAPI.AssertExpectations(t) | ||
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| p := Plugin{ | ||
| MattermostPlugin: plugin.MattermostPlugin{ | ||
| API: mockAPI, | ||
| }, | ||
| } | ||
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| cfg := &model.Config{} | ||
| cfg.SetDefaults() | ||
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| t.Run("plugin not installed", func(t *testing.T) { | ||
| mockAPI.On("GetPluginStatus", callsPluginID).Return(&model.PluginStatus{}, model.NewAppError("GetPluginStatus", "Plugin is not installed.", nil, "", http.StatusNotFound)).Once() | ||
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| targets, err := p.generateCallsTargets(cfg, "localhost", "8067", nil) | ||
| require.EqualError(t, err, "generateCallsTargets: failed to get calls plugin status: GetPluginStatus: Plugin is not installed.") | ||
| require.Empty(t, targets) | ||
| }) | ||
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| t.Run("plugin not running", func(t *testing.T) { | ||
| mockAPI.On("GetPluginStatus", callsPluginID).Return(&model.PluginStatus{ | ||
| State: model.PluginStateStarting, | ||
| }, nil).Once() | ||
| mockAPI.On("LogDebug", "generateCallsTargets: calls plugin is not running").Return().Once() | ||
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| targets, err := p.generateCallsTargets(cfg, "localhost", "8067", nil) | ||
| require.NoError(t, err) | ||
| require.Empty(t, targets) | ||
| }) | ||
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| t.Run("single node", func(t *testing.T) { | ||
| mockAPI.On("GetPluginStatus", callsPluginID).Return(&model.PluginStatus{ | ||
| State: model.PluginStateRunning, | ||
| }, nil).Once() | ||
| mockAPI.On("LogDebug", "generateCallsTargets: calls plugin running, generating targets").Return().Once() | ||
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| targets, err := p.generateCallsTargets(cfg, "localhost", "8067", nil) | ||
| require.NoError(t, err) | ||
| require.Equal(t, []promModel.LabelSet{ | ||
| { | ||
| promModel.AddressLabel: "localhost:8067", | ||
| promModel.MetricsPathLabel: "/plugins/com.mattermost.calls/metrics", | ||
| promModel.JobLabel: "calls", | ||
| }, | ||
| }, targets) | ||
| }) | ||
|
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| t.Run("multi node", func(t *testing.T) { | ||
| mockAPI.On("GetPluginStatus", callsPluginID).Return(&model.PluginStatus{ | ||
| State: model.PluginStateRunning, | ||
| }, nil).Once() | ||
| mockAPI.On("LogDebug", "generateCallsTargets: calls plugin running, generating targets").Return().Once() | ||
|
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| targets, err := p.generateCallsTargets(cfg, "localhost", "8067", []*model.ClusterDiscovery{ | ||
| { | ||
| Hostname: "192.168.1.1", | ||
| }, | ||
| { | ||
| Hostname: "192.168.1.2", | ||
| }, | ||
| }) | ||
| require.NoError(t, err) | ||
| require.Equal(t, []promModel.LabelSet{ | ||
| { | ||
| promModel.AddressLabel: "192.168.1.1:8067", | ||
| promModel.MetricsPathLabel: "/plugins/com.mattermost.calls/metrics", | ||
| promModel.JobLabel: "calls", | ||
| }, | ||
| { | ||
| promModel.AddressLabel: "192.168.1.2:8067", | ||
| promModel.MetricsPathLabel: "/plugins/com.mattermost.calls/metrics", | ||
| promModel.JobLabel: "calls", | ||
| }, | ||
| }, targets) | ||
| }) | ||
|
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| t.Run("rtcd", func(t *testing.T) { | ||
| mockAPI.On("GetPluginStatus", callsPluginID).Return(&model.PluginStatus{ | ||
| State: model.PluginStateRunning, | ||
| }, nil).Once() | ||
| mockAPI.On("LogDebug", "generateCallsTargets: calls plugin running, generating targets").Return().Once() | ||
|
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| cfg.PluginSettings.Plugins[callsPluginID] = map[string]any{ | ||
| "rtcdserviceurl": "http://localhost:8045", | ||
| } | ||
|
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| targets, err := p.generateCallsTargets(cfg, "localhost", "8067", nil) | ||
| require.NoError(t, err) | ||
| require.Equal(t, []promModel.LabelSet{ | ||
| { | ||
| promModel.AddressLabel: "localhost:8067", | ||
| promModel.MetricsPathLabel: "/plugins/com.mattermost.calls/metrics", | ||
| promModel.JobLabel: "calls", | ||
| }, | ||
| { | ||
| promModel.AddressLabel: "127.0.0.1:8045", | ||
| promModel.JobLabel: "calls", | ||
| }, | ||
| }, targets) | ||
| }) | ||
| } |
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