mirror of https://github.com/linka-cloud/grpc.git
80 lines
2.3 KiB
Go
80 lines
2.3 KiB
Go
package client
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import (
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"context"
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"crypto/tls"
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"fmt"
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"strings"
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grpc_middleware "github.com/grpc-ecosystem/go-grpc-middleware"
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"google.golang.org/grpc"
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"google.golang.org/grpc/credentials"
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"google.golang.org/grpc/resolver"
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"go.linka.cloud/grpc/registry/noop"
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)
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type Client interface {
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grpc.ClientConnInterface
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}
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func New(opts ...Option) (Client, error) {
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c := &client{opts: &options{}}
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for _, o := range opts {
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o(c.opts)
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}
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if c.opts.registry == nil {
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c.opts.registry = noop.New()
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}
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resolver.Register(c.opts.registry.ResolverBuilder())
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c.pool = newPool(DefaultPoolSize, DefaultPoolTTL, DefaultPoolMaxIdle, DefaultPoolMaxStreams)
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if c.opts.tlsConfig == nil && c.opts.Secure() {
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c.opts.tlsConfig = &tls.Config{InsecureSkipVerify: true}
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}
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if c.opts.tlsConfig != nil {
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c.opts.dialOptions = append(c.opts.dialOptions, grpc.WithTransportCredentials(credentials.NewTLS(c.opts.tlsConfig)))
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}
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if !c.opts.secure {
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c.opts.dialOptions = append(c.opts.dialOptions, grpc.WithInsecure())
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}
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if len(c.opts.unaryInterceptors) > 0 {
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c.opts.dialOptions = append(c.opts.dialOptions, grpc.WithUnaryInterceptor(grpc_middleware.ChainUnaryClient(c.opts.unaryInterceptors...)))
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}
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if len(c.opts.streamInterceptors) > 0 {
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c.opts.dialOptions = append(c.opts.dialOptions, grpc.WithStreamInterceptor(grpc_middleware.ChainStreamClient(c.opts.streamInterceptors...)))
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}
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if c.opts.addr == "" {
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c.addr = fmt.Sprintf("%s:///%s", c.opts.registry.String(), c.opts.name)
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} else if strings.HasPrefix(c.opts.addr, "tcp://") {
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c.addr = strings.Replace(c.opts.addr, "tcp://", "", 1)
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} else {
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c.addr = c.opts.addr
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}
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if c.opts.version != "" && c.opts.addr == "" {
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c.addr = c.addr + ":" + strings.TrimSpace(c.opts.version)
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}
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return c, nil
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}
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type client struct {
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addr string
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pool *pool
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opts *options
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}
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func (c *client) Invoke(ctx context.Context, method string, args interface{}, reply interface{}, opts ...grpc.CallOption) error {
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pc, err := c.pool.getConn(c.addr, c.opts.dialOptions...)
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if err != nil {
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return err
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}
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return pc.Invoke(ctx, method, args, reply, opts...)
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}
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func (c *client) NewStream(ctx context.Context, desc *grpc.StreamDesc, method string, opts ...grpc.CallOption) (grpc.ClientStream, error) {
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pc, err := c.pool.getConn(c.addr, c.opts.dialOptions...)
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if err != nil {
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return nil, err
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}
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return pc.NewStream(ctx, desc, method, opts...)
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}
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