github.com/alibaba/ilogtail/pkg@v0.0.0-20250526110833-c53b480d046c/helper/containercenter/cri_helper.go (about)

     1  // Copyright 2024 iLogtail Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  //go:build linux
    16  // +build linux
    17  
    18  package containercenter
    19  
    20  import (
    21  	"context"
    22  	"fmt"
    23  	"net"
    24  	"net/url"
    25  	"time"
    26  
    27  	"github.com/alibaba/ilogtail/pkg/logger"
    28  )
    29  
    30  var containerdUnixSocket = "/run/containerd/containerd.sock"
    31  
    32  // GetAddressAndDialer returns the address parsed from the given endpoint and a dialer.
    33  func GetAddressAndDialer(endpoint string) (string, func(addr string, timeout time.Duration) (net.Conn, error), error) {
    34  	endpoint = "unix://" + endpoint
    35  	protocol, addr, err := parseEndpointWithFallbackProtocol(endpoint, "unix")
    36  	if err != nil {
    37  		return "", nil, err
    38  	}
    39  	if protocol != "unix" {
    40  		return "", nil, fmt.Errorf("only support unix socket endpoint")
    41  	}
    42  
    43  	return addr, dial, nil
    44  }
    45  
    46  func parseEndpointWithFallbackProtocol(endpoint string, fallbackProtocol string) (protocol string, addr string, err error) {
    47  	if protocol, addr, err = parseEndpoint(endpoint); err != nil && protocol == "" {
    48  		fallbackEndpoint := fallbackProtocol + "://" + endpoint
    49  		protocol, addr, err = parseEndpoint(fallbackEndpoint)
    50  		if err == nil {
    51  			logger.Infof(context.Background(), "Using %q as endpoint is deprecated, please consider using full url format %q.", endpoint, fallbackEndpoint)
    52  		}
    53  	}
    54  	return
    55  }
    56  
    57  func parseEndpoint(endpoint string) (string, string, error) {
    58  	u, err := url.Parse(endpoint)
    59  	if err != nil {
    60  		return "", "", err
    61  	}
    62  
    63  	switch u.Scheme {
    64  	case "tcp":
    65  		return "tcp", u.Host, nil
    66  
    67  	case "unix":
    68  		return "unix", u.Path, nil
    69  
    70  	case "":
    71  		return "", "", fmt.Errorf("using %q as endpoint is deprecated, please consider using full url format", endpoint)
    72  
    73  	default:
    74  		return u.Scheme, "", fmt.Errorf("protocol %q not supported", u.Scheme)
    75  	}
    76  }
    77  
    78  func dial(addr string, timeout time.Duration) (net.Conn, error) {
    79  	return net.DialTimeout("unix", addr, timeout)
    80  }