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fa710a3172
* Rendering: base metrics * Rendering: rendering_queue_size metric * Chore: fix linter error * Rendering metrics: refactoring * Apply suggestions from code review Co-Authored-By: Marcus Efraimsson <marcus.efraimsson@gmail.com> * Rendering metrics: handle DeadlineExceeded errors * Rendering metrics: don't measure canceled request time * Rendering metrics: revert deleting summary for canceled requests * Update pkg/services/rendering/rendering.go Co-Authored-By: Marcus Efraimsson <marcus.efraimsson@gmail.com> * Rendering: return ErrTimeout if context deadline exceeded Co-authored-by: Marcus Efraimsson <marcus.efraimsson@gmail.com>
104 lines
2.8 KiB
Go
104 lines
2.8 KiB
Go
package rendering
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import (
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"context"
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"fmt"
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"time"
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pluginModel "github.com/grafana/grafana-plugin-model/go/renderer"
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"github.com/grafana/grafana/pkg/plugins/backendplugin/pluginextensionv2"
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)
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func (rs *RenderingService) startPlugin(ctx context.Context) error {
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return rs.pluginInfo.Start(ctx)
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}
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func (rs *RenderingService) renderViaPlugin(ctx context.Context, renderKey string, opts Opts) (*RenderResult, error) {
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// gives plugin some additional time to timeout and return possible errors.
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ctx, cancel := context.WithTimeout(ctx, opts.Timeout+time.Second*2)
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defer cancel()
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if rs.pluginInfo.GrpcPluginV2 != nil {
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return rs.renderViaPluginV2(ctx, renderKey, opts)
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}
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return rs.renderViaPluginV1(ctx, renderKey, opts)
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}
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func (rs *RenderingService) renderViaPluginV1(ctx context.Context, renderKey string, opts Opts) (*RenderResult, error) {
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pngPath, err := rs.getFilePathForNewImage()
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if err != nil {
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return nil, err
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}
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req := &pluginModel.RenderRequest{
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Url: rs.getURL(opts.Path),
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Width: int32(opts.Width),
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Height: int32(opts.Height),
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FilePath: pngPath,
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Timeout: int32(opts.Timeout.Seconds()),
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RenderKey: renderKey,
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Encoding: opts.Encoding,
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Timezone: isoTimeOffsetToPosixTz(opts.Timezone),
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Domain: rs.domain,
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}
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rs.log.Debug("calling renderer plugin", "req", req)
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rsp, err := rs.pluginInfo.GrpcPluginV1.Render(ctx, req)
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if ctx.Err() == context.DeadlineExceeded {
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rs.log.Info("Rendering timed out")
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return nil, ErrTimeout
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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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if rsp.Error != "" {
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return nil, fmt.Errorf("rendering failed: %v", rsp.Error)
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}
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return &RenderResult{FilePath: pngPath}, nil
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}
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func (rs *RenderingService) renderViaPluginV2(ctx context.Context, renderKey string, opts Opts) (*RenderResult, error) {
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pngPath, err := rs.getFilePathForNewImage()
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if err != nil {
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return nil, err
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}
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headers := map[string]*pluginextensionv2.StringList{}
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for k, values := range opts.Headers {
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headers[k] = &pluginextensionv2.StringList{
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Values: values,
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}
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}
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req := &pluginextensionv2.RenderRequest{
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Url: rs.getURL(opts.Path),
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Width: int32(opts.Width),
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Height: int32(opts.Height),
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DeviceScaleFactor: float32(opts.DeviceScaleFactor),
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FilePath: pngPath,
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Timeout: int32(opts.Timeout.Seconds()),
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RenderKey: renderKey,
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Timezone: isoTimeOffsetToPosixTz(opts.Timezone),
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Domain: rs.domain,
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Headers: headers,
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}
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rs.log.Debug("Calling renderer plugin", "req", req)
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rsp, err := rs.pluginInfo.GrpcPluginV2.Render(ctx, req)
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if ctx.Err() == context.DeadlineExceeded {
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rs.log.Info("Rendering timed out")
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return nil, ErrTimeout
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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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if rsp.Error != "" {
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return nil, fmt.Errorf("Rendering failed: %v", rsp.Error)
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}
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return &RenderResult{FilePath: pngPath}, err
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}
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