88 lines
1.7 KiB
Go
88 lines
1.7 KiB
Go
package pb
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import (
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"context"
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"github.com/unistack-org/micro/v3/codec"
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"github.com/unistack-org/micro/v3/errors"
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"github.com/unistack-org/micro/v3/server"
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)
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var (
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// guard to fail early
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_ HealthServer = &handler{}
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)
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type handler struct {
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server server.Server
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opts Options
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}
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type CheckFunc func(context.Context) error
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type Option func(*Options)
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type Options struct {
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LiveChecks []CheckFunc
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ReadyChecks []CheckFunc
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Version string
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Name string
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}
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func LiveChecks(fns ...CheckFunc) Option {
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return func(o *Options) {
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o.LiveChecks = append(o.LiveChecks, fns...)
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}
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}
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func ReadyChecks(fns ...CheckFunc) Option {
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return func(o *Options) {
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o.ReadyChecks = append(o.ReadyChecks, fns...)
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}
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}
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func Name(name string) Option {
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return func(o *Options) {
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o.Name = name
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}
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}
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func Version(version string) Option {
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return func(o *Options) {
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o.Version = version
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}
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}
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func NewHealth(opts ...Option) *handler {
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options := Options{}
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for _, o := range opts {
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o(&options)
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}
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return &handler{opts: options}
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}
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func (h *handler) Live(ctx context.Context, req *codec.Frame, rsp *codec.Frame) error {
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var err error
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for _, fn := range h.opts.LiveChecks {
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if err = fn(ctx); err != nil {
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return errors.ServiceUnavailable(h.opts.Name, "%v", err)
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}
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}
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return nil
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}
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func (h *handler) Ready(ctx context.Context, req *codec.Frame, rsp *codec.Frame) error {
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var err error
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for _, fn := range h.opts.ReadyChecks {
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if err = fn(ctx); err != nil {
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return errors.ServiceUnavailable(h.opts.Name, "%v", err)
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}
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}
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return nil
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}
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func (h *handler) Version(ctx context.Context, req *codec.Frame, rsp *codec.Frame) error {
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rsp.Data = []byte(h.opts.Version)
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return nil
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}
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