2013-12-12 19:07:14 +00:00
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package consul
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2013-12-19 22:18:55 +00:00
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import (
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2014-01-08 00:58:16 +00:00
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"encoding/binary"
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2013-12-31 23:44:17 +00:00
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"fmt"
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"net"
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2014-04-29 17:55:42 +00:00
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"runtime"
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2013-12-19 22:37:54 +00:00
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"strconv"
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2014-06-16 21:36:12 +00:00
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pkg refactor
command/agent/* -> agent/*
command/consul/* -> agent/consul/*
command/agent/command{,_test}.go -> command/agent{,_test}.go
command/base/command.go -> command/base.go
command/base/* -> command/*
commands.go -> command/commands.go
The script which did the refactor is:
(
cd $GOPATH/src/github.com/hashicorp/consul
git mv command/agent/command.go command/agent.go
git mv command/agent/command_test.go command/agent_test.go
git mv command/agent/flag_slice_value{,_test}.go command/
git mv command/agent .
git mv command/base/command.go command/base.go
git mv command/base/config_util{,_test}.go command/
git mv commands.go command/
git mv consul agent
rmdir command/base/
gsed -i -e 's|package agent|package command|' command/agent{,_test}.go
gsed -i -e 's|package agent|package command|' command/flag_slice_value{,_test}.go
gsed -i -e 's|package base|package command|' command/base.go command/config_util{,_test}.go
gsed -i -e 's|package main|package command|' command/commands.go
gsed -i -e 's|base.Command|BaseCommand|' command/commands.go
gsed -i -e 's|agent.Command|AgentCommand|' command/commands.go
gsed -i -e 's|\tCommand:|\tBaseCommand:|' command/commands.go
gsed -i -e 's|base\.||' command/commands.go
gsed -i -e 's|command\.||' command/commands.go
gsed -i -e 's|command|c|' main.go
gsed -i -e 's|range Commands|range command.Commands|' main.go
gsed -i -e 's|Commands: Commands|Commands: command.Commands|' main.go
gsed -i -e 's|base\.BoolValue|BoolValue|' command/operator_autopilot_set.go
gsed -i -e 's|base\.DurationValue|DurationValue|' command/operator_autopilot_set.go
gsed -i -e 's|base\.StringValue|StringValue|' command/operator_autopilot_set.go
gsed -i -e 's|base\.UintValue|UintValue|' command/operator_autopilot_set.go
gsed -i -e 's|\bCommand\b|BaseCommand|' command/base.go
gsed -i -e 's|BaseCommand Options|Command Options|' command/base.go
gsed -i -e 's|base.Command|BaseCommand|' command/*.go
gsed -i -e 's|c\.Command|c.BaseCommand|g' command/*.go
gsed -i -e 's|\tCommand:|\tBaseCommand:|' command/*_test.go
gsed -i -e 's|base\.||' command/*_test.go
gsed -i -e 's|\bCommand\b|AgentCommand|' command/agent{,_test}.go
gsed -i -e 's|cmd.AgentCommand|cmd.BaseCommand|' command/agent.go
gsed -i -e 's|cli.AgentCommand = new(Command)|cli.Command = new(AgentCommand)|' command/agent_test.go
gsed -i -e 's|exec.AgentCommand|exec.Command|' command/agent_test.go
gsed -i -e 's|exec.BaseCommand|exec.Command|' command/agent_test.go
gsed -i -e 's|NewTestAgent|agent.NewTestAgent|' command/agent_test.go
gsed -i -e 's|= TestConfig|= agent.TestConfig|' command/agent_test.go
gsed -i -e 's|: RetryJoin|: agent.RetryJoin|' command/agent_test.go
gsed -i -e 's|\.\./\.\./|../|' command/config_util_test.go
gsed -i -e 's|\bverifyUniqueListeners|VerifyUniqueListeners|' agent/config{,_test}.go command/agent.go
gsed -i -e 's|\bserfLANKeyring\b|SerfLANKeyring|g' agent/{agent,keyring,testagent}.go command/agent.go
gsed -i -e 's|\bserfWANKeyring\b|SerfWANKeyring|g' agent/{agent,keyring,testagent}.go command/agent.go
gsed -i -e 's|\bNewAgent\b|agent.New|g' command/agent{,_test}.go
gsed -i -e 's|\bNewAgent|New|' agent/{acl_test,agent,testagent}.go
gsed -i -e 's|\bAgent\b|agent.&|g' command/agent{,_test}.go
gsed -i -e 's|\bBool\b|agent.&|g' command/agent{,_test}.go
gsed -i -e 's|\bConfig\b|agent.&|g' command/agent{,_test}.go
gsed -i -e 's|\bDefaultConfig\b|agent.&|g' command/agent{,_test}.go
gsed -i -e 's|\bDevConfig\b|agent.&|g' command/agent{,_test}.go
gsed -i -e 's|\bMergeConfig\b|agent.&|g' command/agent{,_test}.go
gsed -i -e 's|\bReadConfigPaths\b|agent.&|g' command/agent{,_test}.go
gsed -i -e 's|\bParseMetaPair\b|agent.&|g' command/agent{,_test}.go
gsed -i -e 's|\bSerfLANKeyring\b|agent.&|g' command/agent{,_test}.go
gsed -i -e 's|\bSerfWANKeyring\b|agent.&|g' command/agent{,_test}.go
gsed -i -e 's|circonus\.agent|circonus|g' command/agent{,_test}.go
gsed -i -e 's|logger\.agent|logger|g' command/agent{,_test}.go
gsed -i -e 's|metrics\.agent|metrics|g' command/agent{,_test}.go
gsed -i -e 's|// agent.Agent|// agent|' command/agent{,_test}.go
gsed -i -e 's|a\.agent\.Config|a.Config|' command/agent{,_test}.go
gsed -i -e 's|agent\.AppendSliceValue|AppendSliceValue|' command/{configtest,validate}.go
gsed -i -e 's|consul/consul|agent/consul|' GNUmakefile
gsed -i -e 's|\.\./test|../../test|' agent/consul/server_test.go
# fix imports
f=$(grep -rl 'github.com/hashicorp/consul/command/agent' * | grep '\.go')
gsed -i -e 's|github.com/hashicorp/consul/command/agent|github.com/hashicorp/consul/agent|' $f
goimports -w $f
f=$(grep -rl 'github.com/hashicorp/consul/consul' * | grep '\.go')
gsed -i -e 's|github.com/hashicorp/consul/consul|github.com/hashicorp/consul/agent/consul|' $f
goimports -w $f
goimports -w command/*.go main.go
)
2017-06-09 22:28:28 +00:00
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"github.com/hashicorp/consul/agent/consul/agent"
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2017-04-13 00:09:57 +00:00
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"github.com/hashicorp/go-version"
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2014-06-16 21:36:12 +00:00
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"github.com/hashicorp/serf/serf"
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2013-12-19 22:18:55 +00:00
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)
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2013-12-31 23:44:17 +00:00
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/*
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* Contains an entry for each private block:
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* 10.0.0.0/8
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2015-06-19 19:20:30 +00:00
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* 100.64.0.0/10
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2015-09-02 10:24:14 +00:00
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* 127.0.0.0/8
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* 169.254.0.0/16
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2013-12-31 23:44:17 +00:00
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* 172.16.0.0/12
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2015-09-02 10:24:14 +00:00
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* 192.168.0.0/16
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2013-12-31 23:44:17 +00:00
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*/
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var privateBlocks []*net.IPNet
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func init() {
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// Add each private block
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2015-09-02 10:24:14 +00:00
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privateBlocks = make([]*net.IPNet, 6)
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2015-06-19 19:20:30 +00:00
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2013-12-31 23:44:17 +00:00
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_, block, err := net.ParseCIDR("10.0.0.0/8")
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if err != nil {
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panic(fmt.Sprintf("Bad cidr. Got %v", err))
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}
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privateBlocks[0] = block
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2015-09-02 10:24:14 +00:00
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_, block, err = net.ParseCIDR("100.64.0.0/10")
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2013-12-31 23:44:17 +00:00
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if err != nil {
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panic(fmt.Sprintf("Bad cidr. Got %v", err))
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}
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privateBlocks[1] = block
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2015-09-02 10:24:14 +00:00
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_, block, err = net.ParseCIDR("127.0.0.0/8")
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2013-12-31 23:44:17 +00:00
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if err != nil {
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panic(fmt.Sprintf("Bad cidr. Got %v", err))
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}
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privateBlocks[2] = block
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2015-06-19 19:20:30 +00:00
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2015-09-02 10:24:14 +00:00
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_, block, err = net.ParseCIDR("169.254.0.0/16")
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2015-06-19 19:20:30 +00:00
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if err != nil {
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panic(fmt.Sprintf("Bad cidr. Got %v", err))
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}
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privateBlocks[3] = block
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2015-09-02 10:24:14 +00:00
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_, block, err = net.ParseCIDR("172.16.0.0/12")
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if err != nil {
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panic(fmt.Sprintf("Bad cidr. Got %v", err))
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}
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privateBlocks[4] = block
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_, block, err = net.ParseCIDR("192.168.0.0/16")
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if err != nil {
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panic(fmt.Sprintf("Bad cidr. Got %v", err))
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}
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privateBlocks[5] = block
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2013-12-31 23:44:17 +00:00
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}
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2015-10-27 21:30:29 +00:00
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// CanServersUnderstandProtocol checks to see if all the servers in the given
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2015-10-27 22:56:36 +00:00
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// list understand the given protocol version. If there are no servers in the
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// list then this will return false.
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2015-10-27 21:30:29 +00:00
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func CanServersUnderstandProtocol(members []serf.Member, version uint8) (bool, error) {
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numServers, numWhoGrok := 0, 0
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for _, m := range members {
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if m.Tags["role"] != "consul" {
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continue
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}
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numServers++
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2015-10-27 22:56:36 +00:00
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vsn_min, err := strconv.Atoi(m.Tags["vsn_min"])
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2015-10-27 21:30:29 +00:00
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if err != nil {
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return false, err
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}
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2015-10-27 22:56:36 +00:00
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vsn_max, err := strconv.Atoi(m.Tags["vsn_max"])
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if err != nil {
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return false, err
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}
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v := int(version)
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if (v >= vsn_min) && (v <= vsn_max) {
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2015-10-27 21:30:29 +00:00
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numWhoGrok++
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}
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}
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return (numServers > 0) && (numWhoGrok == numServers), nil
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}
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2017-02-22 20:53:32 +00:00
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// ServerMinRaftProtocol returns the lowest supported Raft protocol among alive servers
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func ServerMinRaftProtocol(members []serf.Member) (int, error) {
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minVersion := -1
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for _, m := range members {
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if m.Tags["role"] != "consul" || m.Status != serf.StatusAlive {
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continue
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}
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vsn, ok := m.Tags["raft_vsn"]
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if !ok {
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vsn = "1"
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}
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raftVsn, err := strconv.Atoi(vsn)
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if err != nil {
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return -1, err
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}
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if minVersion == -1 || raftVsn < minVersion {
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minVersion = raftVsn
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}
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}
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2017-02-23 21:08:40 +00:00
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if minVersion == -1 {
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return minVersion, fmt.Errorf("No servers found")
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}
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2017-02-22 20:53:32 +00:00
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return minVersion, nil
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}
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2015-07-02 22:36:59 +00:00
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// Returns if a member is a consul node. Returns a bool,
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2015-02-19 22:45:47 +00:00
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// and the datacenter.
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2014-01-09 23:45:14 +00:00
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func isConsulNode(m serf.Member) (bool, string) {
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2014-01-30 21:13:29 +00:00
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if m.Tags["role"] != "node" {
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2014-01-09 23:45:14 +00:00
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return false, ""
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}
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2014-01-30 21:13:29 +00:00
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return true, m.Tags["dc"]
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2014-01-09 23:45:14 +00:00
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}
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2013-12-31 23:44:17 +00:00
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// Returns if the given IP is in a private block
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func isPrivateIP(ip_str string) bool {
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ip := net.ParseIP(ip_str)
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for _, priv := range privateBlocks {
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if priv.Contains(ip) {
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return true
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}
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}
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return false
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}
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2015-09-02 10:24:36 +00:00
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// Returns addresses from interfaces that is up
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func activeInterfaceAddresses() ([]net.Addr, error) {
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var upAddrs []net.Addr
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2015-09-02 10:24:44 +00:00
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var loAddrs []net.Addr
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2015-09-02 10:24:36 +00:00
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interfaces, err := net.Interfaces()
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if err != nil {
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return nil, fmt.Errorf("Failed to get interfaces: %v", err)
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}
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for _, iface := range interfaces {
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// Require interface to be up
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if iface.Flags&net.FlagUp == 0 {
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continue
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}
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addresses, err := iface.Addrs()
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if err != nil {
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return nil, fmt.Errorf("Failed to get interface addresses: %v", err)
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}
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2015-09-02 10:24:44 +00:00
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if iface.Flags&net.FlagLoopback != 0 {
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loAddrs = append(loAddrs, addresses...)
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continue
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}
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2015-09-02 10:24:36 +00:00
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upAddrs = append(upAddrs, addresses...)
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}
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2015-09-02 10:24:44 +00:00
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if len(upAddrs) == 0 {
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return loAddrs, nil
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}
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2015-09-02 10:24:36 +00:00
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return upAddrs, nil
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}
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2013-12-31 23:44:17 +00:00
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// GetPrivateIP is used to return the first private IP address
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// associated with an interface on the machine
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2014-05-15 18:27:30 +00:00
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func GetPrivateIP() (net.IP, error) {
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2015-09-02 10:24:36 +00:00
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addresses, err := activeInterfaceAddresses()
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2013-12-31 23:44:17 +00:00
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if err != nil {
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return nil, fmt.Errorf("Failed to get interface addresses: %v", err)
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}
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2015-08-15 21:32:38 +00:00
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return getPrivateIP(addresses)
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}
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func getPrivateIP(addresses []net.Addr) (net.IP, error) {
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2015-07-17 02:24:47 +00:00
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var candidates []net.IP
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2013-12-31 23:44:17 +00:00
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// Find private IPv4 address
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2014-05-15 18:27:30 +00:00
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for _, rawAddr := range addresses {
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var ip net.IP
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switch addr := rawAddr.(type) {
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case *net.IPAddr:
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ip = addr.IP
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case *net.IPNet:
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ip = addr.IP
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default:
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2013-12-31 23:44:17 +00:00
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continue
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}
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2014-05-15 18:27:30 +00:00
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if ip.To4() == nil {
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2013-12-31 23:44:17 +00:00
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continue
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}
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2014-05-15 18:27:30 +00:00
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if !isPrivateIP(ip.String()) {
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2013-12-31 23:44:17 +00:00
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continue
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}
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2015-07-17 02:24:47 +00:00
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candidates = append(candidates, ip)
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}
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numIps := len(candidates)
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switch numIps {
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case 0:
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return nil, fmt.Errorf("No private IP address found")
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case 1:
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return candidates[0], nil
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default:
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return nil, fmt.Errorf("Multiple private IPs found. Please configure one.")
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2013-12-31 23:44:17 +00:00
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}
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2015-08-15 21:32:38 +00:00
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2013-12-31 23:44:17 +00:00
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}
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2014-01-08 00:58:16 +00:00
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2015-09-05 15:53:41 +00:00
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// GetPublicIPv6 is used to return the first public IP address
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// associated with an interface on the machine
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func GetPublicIPv6() (net.IP, error) {
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addresses, err := net.InterfaceAddrs()
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if err != nil {
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return nil, fmt.Errorf("Failed to get interface addresses: %v", err)
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}
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return getPublicIPv6(addresses)
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}
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2016-03-19 23:14:45 +00:00
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func isUniqueLocalAddress(ip net.IP) bool {
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return len(ip) == net.IPv6len && ip[0] == 0xfc && ip[1] == 0x00
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}
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2015-09-05 15:53:41 +00:00
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func getPublicIPv6(addresses []net.Addr) (net.IP, error) {
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var candidates []net.IP
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// Find public IPv6 address
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for _, rawAddr := range addresses {
|
|
|
|
var ip net.IP
|
|
|
|
switch addr := rawAddr.(type) {
|
|
|
|
case *net.IPAddr:
|
|
|
|
ip = addr.IP
|
|
|
|
case *net.IPNet:
|
|
|
|
ip = addr.IP
|
|
|
|
default:
|
|
|
|
continue
|
|
|
|
}
|
|
|
|
|
|
|
|
if ip.To4() != nil {
|
|
|
|
continue
|
|
|
|
}
|
2016-03-19 23:14:45 +00:00
|
|
|
|
|
|
|
if ip.IsLinkLocalUnicast() || isUniqueLocalAddress(ip) || ip.IsLoopback() {
|
2015-09-05 15:53:41 +00:00
|
|
|
continue
|
|
|
|
}
|
|
|
|
candidates = append(candidates, ip)
|
|
|
|
}
|
|
|
|
numIps := len(candidates)
|
|
|
|
switch numIps {
|
|
|
|
case 0:
|
|
|
|
return nil, fmt.Errorf("No public IPv6 address found")
|
|
|
|
case 1:
|
|
|
|
return candidates[0], nil
|
|
|
|
default:
|
|
|
|
return nil, fmt.Errorf("Multiple public IPv6 addresses found. Please configure one.")
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2014-01-08 00:58:16 +00:00
|
|
|
// Converts bytes to an integer
|
|
|
|
func bytesToUint64(b []byte) uint64 {
|
|
|
|
return binary.BigEndian.Uint64(b)
|
|
|
|
}
|
|
|
|
|
|
|
|
// Converts a uint to a byte slice
|
|
|
|
func uint64ToBytes(u uint64) []byte {
|
|
|
|
buf := make([]byte, 8)
|
|
|
|
binary.BigEndian.PutUint64(buf, u)
|
|
|
|
return buf
|
|
|
|
}
|
2014-04-29 17:55:42 +00:00
|
|
|
|
|
|
|
// runtimeStats is used to return various runtime information
|
|
|
|
func runtimeStats() map[string]string {
|
|
|
|
return map[string]string{
|
|
|
|
"os": runtime.GOOS,
|
|
|
|
"arch": runtime.GOARCH,
|
|
|
|
"version": runtime.Version(),
|
|
|
|
"max_procs": strconv.FormatInt(int64(runtime.GOMAXPROCS(0)), 10),
|
|
|
|
"goroutines": strconv.FormatInt(int64(runtime.NumGoroutine()), 10),
|
|
|
|
"cpu_count": strconv.FormatInt(int64(runtime.NumCPU()), 10),
|
|
|
|
}
|
|
|
|
}
|
2017-04-13 00:09:57 +00:00
|
|
|
|
|
|
|
// ServersMeetMinimumVersion returns whether the given alive servers are at least on the
|
|
|
|
// given Consul version
|
|
|
|
func ServersMeetMinimumVersion(members []serf.Member, minVersion *version.Version) bool {
|
|
|
|
for _, member := range members {
|
|
|
|
if valid, parts := agent.IsConsulServer(member); valid && parts.Status == serf.StatusAlive {
|
|
|
|
if parts.Build.LessThan(minVersion) {
|
|
|
|
return false
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return true
|
2017-04-13 01:38:36 +00:00
|
|
|
}
|