porter/api/server/handlers/porter_app/apply.go

package porter_app

import (
	"encoding/base64"
	"net/http"

	"connectrpc.com/connect"

	porterv1 "github.com/porter-dev/api-contracts/generated/go/porter/v1"

	"github.com/porter-dev/api-contracts/generated/go/helpers"

	"github.com/porter-dev/porter/internal/telemetry"

	"github.com/porter-dev/porter/api/server/handlers"
	"github.com/porter-dev/porter/api/server/shared"
	"github.com/porter-dev/porter/api/server/shared/apierrors"
	"github.com/porter-dev/porter/api/server/shared/config"
	"github.com/porter-dev/porter/api/types"
	"github.com/porter-dev/porter/internal/models"
)

// ApplyPorterAppHandler is the handler for the /apps/parse endpoint
type ApplyPorterAppHandler struct {
	handlers.PorterHandlerReadWriter
}

// NewApplyPorterAppHandler handles POST requests to the endpoint /apps/apply
func NewApplyPorterAppHandler(
	config *config.Config,
	decoderValidator shared.RequestDecoderValidator,
	writer shared.ResultWriter,
) *ApplyPorterAppHandler {
	return &ApplyPorterAppHandler{
		PorterHandlerReadWriter: handlers.NewDefaultPorterHandler(config, decoderValidator, writer),
	}
}

// ApplyPorterAppRequest is the request object for the /apps/apply endpoint
type ApplyPorterAppRequest struct {
	Base64AppProto     string `json:"b64_app_proto"`
	DeploymentTargetId string `json:"deployment_target_id"`
	AppRevisionID      string `json:"app_revision_id"`
}

// ApplyPorterAppResponse is the response object for the /apps/apply endpoint
type ApplyPorterAppResponse struct {
	AppRevisionId string                 `json:"app_revision_id"`
	CLIAction     porterv1.EnumCLIAction `json:"cli_action"`
}

// ServeHTTP translates the request into a ApplyPorterApp request, forwards to the cluster control plane, and returns the response
func (c *ApplyPorterAppHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	ctx, span := telemetry.NewSpan(r.Context(), "serve-apply-porter-app")
	defer span.End()

	project, _ := ctx.Value(types.ProjectScope).(*models.Project)
	cluster, _ := ctx.Value(types.ClusterScope).(*models.Cluster)

	telemetry.WithAttributes(span,
		telemetry.AttributeKV{Key: "project-id", Value: project.ID},
		telemetry.AttributeKV{Key: "cluster-id", Value: cluster.ID},
	)

	if !project.ValidateApplyV2 {
		err := telemetry.Error(ctx, span, nil, "project does not have validate apply v2 enabled")
		c.HandleAPIError(w, r, apierrors.NewErrForbidden(err))
		return
	}

	request := &ApplyPorterAppRequest{}
	if ok := c.DecodeAndValidate(w, r, request); !ok {
		err := telemetry.Error(ctx, span, nil, "error decoding request")
		c.HandleAPIError(w, r, apierrors.NewErrPassThroughToClient(err, http.StatusBadRequest))
		return
	}

	var appRevisionID string
	var appProto *porterv1.PorterApp
	var deploymentTargetID string

	if request.AppRevisionID != "" {
		appRevisionID = request.AppRevisionID
		telemetry.WithAttributes(span, telemetry.AttributeKV{Key: "app-revision-id", Value: request.AppRevisionID})
	} else {
		if request.Base64AppProto == "" {
			err := telemetry.Error(ctx, span, nil, "b64 yaml is empty")
			c.HandleAPIError(w, r, apierrors.NewErrPassThroughToClient(err, http.StatusBadRequest))
			return
		}

		decoded, err := base64.StdEncoding.DecodeString(request.Base64AppProto)
		if err != nil {
			err := telemetry.Error(ctx, span, err, "error decoding base yaml")
			c.HandleAPIError(w, r, apierrors.NewErrPassThroughToClient(err, http.StatusBadRequest))
			return
		}

		appProto = &porterv1.PorterApp{}
		err = helpers.UnmarshalContractObject(decoded, appProto)
		if err != nil {
			err := telemetry.Error(ctx, span, err, "error unmarshalling app proto")
			c.HandleAPIError(w, r, apierrors.NewErrPassThroughToClient(err, http.StatusBadRequest))
			return
		}

		if request.DeploymentTargetId == "" {
			err := telemetry.Error(ctx, span, err, "deployment target id is empty")
			c.HandleAPIError(w, r, apierrors.NewErrPassThroughToClient(err, http.StatusBadRequest))
			return
		}
		deploymentTargetID = request.DeploymentTargetId

		telemetry.WithAttributes(span,
			telemetry.AttributeKV{Key: "app-name", Value: appProto.Name},
			telemetry.AttributeKV{Key: "deployment-target-id", Value: request.DeploymentTargetId},
		)
	}

	applyReq := connect.NewRequest(&porterv1.ApplyPorterAppRequest{
		ProjectId:           int64(project.ID),
		DeploymentTargetId:  deploymentTargetID,
		App:                 appProto,
		PorterAppRevisionId: appRevisionID,
	})
	ccpResp, err := c.Config().ClusterControlPlaneClient.ApplyPorterApp(ctx, applyReq)
	if err != nil {
		err := telemetry.Error(ctx, span, err, "error calling ccp apply porter app")
		c.HandleAPIError(w, r, apierrors.NewErrPassThroughToClient(err, http.StatusInternalServerError))
		return
	}

	if ccpResp == nil {
		err := telemetry.Error(ctx, span, err, "ccp resp is nil")
		c.HandleAPIError(w, r, apierrors.NewErrPassThroughToClient(err, http.StatusInternalServerError))
		return
	}
	if ccpResp.Msg == nil {
		err := telemetry.Error(ctx, span, err, "ccp resp msg is nil")
		c.HandleAPIError(w, r, apierrors.NewErrPassThroughToClient(err, http.StatusInternalServerError))
		return
	}

	if ccpResp.Msg.PorterAppRevisionId == "" {
		err := telemetry.Error(ctx, span, err, "ccp resp app revision id is nil")
		c.HandleAPIError(w, r, apierrors.NewErrPassThroughToClient(err, http.StatusInternalServerError))
		return
	}

	telemetry.WithAttributes(span, telemetry.AttributeKV{Key: "resp-app-revision-id", Value: ccpResp.Msg.PorterAppRevisionId})

	if ccpResp.Msg.CliAction == porterv1.EnumCLIAction_ENUM_CLI_ACTION_UNSPECIFIED {
		err := telemetry.Error(ctx, span, err, "ccp resp cli action is nil")
		c.HandleAPIError(w, r, apierrors.NewErrPassThroughToClient(err, http.StatusInternalServerError))
		return
	}

	telemetry.WithAttributes(span, telemetry.AttributeKV{Key: "cli-action", Value: ccpResp.Msg.CliAction.String()})

	response := &ApplyPorterAppResponse{
		AppRevisionId: ccpResp.Msg.PorterAppRevisionId,
		CLIAction:     ccpResp.Msg.CliAction,
	}

	c.WriteResult(w, r, response)
}