601 lines
16 KiB
Go
601 lines
16 KiB
Go
//go:generate go run -tags generate snmp_mocks_generate.go
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package snmp
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import (
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"fmt"
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"net"
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"sync"
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"testing"
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"time"
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"github.com/influxdata/telegraf/internal"
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"github.com/influxdata/telegraf/testutil"
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"github.com/influxdata/toml"
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"github.com/soniah/gosnmp"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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type testSNMPConnection struct {
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host string
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values map[string]interface{}
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}
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func (tsc *testSNMPConnection) Host() string {
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return tsc.host
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}
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func (tsc *testSNMPConnection) Get(oids []string) (*gosnmp.SnmpPacket, error) {
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sp := &gosnmp.SnmpPacket{}
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for _, oid := range oids {
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v, ok := tsc.values[oid]
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if !ok {
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sp.Variables = append(sp.Variables, gosnmp.SnmpPDU{
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Name: oid,
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Type: gosnmp.NoSuchObject,
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})
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continue
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}
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sp.Variables = append(sp.Variables, gosnmp.SnmpPDU{
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Name: oid,
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Value: v,
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})
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}
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return sp, nil
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}
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func (tsc *testSNMPConnection) Walk(oid string, wf gosnmp.WalkFunc) error {
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for void, v := range tsc.values {
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if void == oid || (len(void) > len(oid) && void[:len(oid)+1] == oid+".") {
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if err := wf(gosnmp.SnmpPDU{
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Name: void,
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Value: v,
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}); err != nil {
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return err
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}
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}
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}
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return nil
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}
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var tsc = &testSNMPConnection{
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host: "tsc",
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values: map[string]interface{}{
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".1.0.0.0.1.1.0": "foo",
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".1.0.0.0.1.1.1": []byte("bar"),
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".1.0.0.0.1.102": "bad",
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".1.0.0.0.1.2.0": 1,
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".1.0.0.0.1.2.1": 2,
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".1.0.0.0.1.3.0": "0.123",
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".1.0.0.0.1.3.1": "0.456",
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".1.0.0.0.1.3.2": "9.999",
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".1.0.0.0.1.4.0": 123456,
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".1.0.0.1.1": "baz",
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".1.0.0.1.2": 234,
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".1.0.0.1.3": []byte("byte slice"),
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".1.0.0.2.1.5.0.9.9": 11,
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".1.0.0.2.1.5.1.9.9": 22,
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},
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}
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func TestSampleConfig(t *testing.T) {
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conf := struct {
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Inputs struct {
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Snmp []*Snmp
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}
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}{}
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err := toml.Unmarshal([]byte("[[inputs.snmp]]\n"+(*Snmp)(nil).SampleConfig()), &conf)
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assert.NoError(t, err)
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s := Snmp{
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Agents: []string{"127.0.0.1:161"},
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Timeout: internal.Duration{Duration: 5 * time.Second},
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Version: 2,
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Community: "public",
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MaxRepetitions: 10,
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Retries: 3,
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Name: "system",
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Fields: []Field{
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{Name: "hostname", Oid: ".1.0.0.1.1"},
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{Name: "uptime", Oid: ".1.0.0.1.2"},
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{Name: "load", Oid: ".1.0.0.1.3"},
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{Oid: "HOST-RESOURCES-MIB::hrMemorySize"},
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},
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Tables: []Table{
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{
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Name: "remote_servers",
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InheritTags: []string{"hostname"},
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Fields: []Field{
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{Name: "server", Oid: ".1.0.0.0.1.0", IsTag: true},
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{Name: "connections", Oid: ".1.0.0.0.1.1"},
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{Name: "latency", Oid: ".1.0.0.0.1.2"},
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},
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},
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{
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Oid: "HOST-RESOURCES-MIB::hrNetworkTable",
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},
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},
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}
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assert.Equal(t, s, *conf.Inputs.Snmp[0])
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}
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func TestFieldInit(t *testing.T) {
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translations := []struct {
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inputOid string
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inputName string
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inputConversion string
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expectedOid string
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expectedName string
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expectedConversion string
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}{
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{".1.2.3", "foo", "", ".1.2.3", "foo", ""},
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{".iso.2.3", "foo", "", ".1.2.3", "foo", ""},
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{".1.0.0.0.1.1", "", "", ".1.0.0.0.1.1", "server", ""},
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{".1.0.0.0.1.1.0", "", "", ".1.0.0.0.1.1.0", "server.0", ""},
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{".999", "", "", ".999", ".999", ""},
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{"TEST::server", "", "", ".1.0.0.0.1.1", "server", ""},
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{"TEST::server.0", "", "", ".1.0.0.0.1.1.0", "server.0", ""},
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{"TEST::server", "foo", "", ".1.0.0.0.1.1", "foo", ""},
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{"IF-MIB::ifPhysAddress.1", "", "", ".1.3.6.1.2.1.2.2.1.6.1", "ifPhysAddress.1", "hwaddr"},
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{"IF-MIB::ifPhysAddress.1", "", "none", ".1.3.6.1.2.1.2.2.1.6.1", "ifPhysAddress.1", "none"},
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{"BRIDGE-MIB::dot1dTpFdbAddress.1", "", "", ".1.3.6.1.2.1.17.4.3.1.1.1", "dot1dTpFdbAddress.1", "hwaddr"},
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{"TCP-MIB::tcpConnectionLocalAddress.1", "", "", ".1.3.6.1.2.1.6.19.1.2.1", "tcpConnectionLocalAddress.1", "ipaddr"},
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}
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for _, txl := range translations {
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f := Field{Oid: txl.inputOid, Name: txl.inputName, Conversion: txl.inputConversion}
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err := f.init()
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if !assert.NoError(t, err, "inputOid='%s' inputName='%s'", txl.inputOid, txl.inputName) {
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continue
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}
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assert.Equal(t, txl.expectedOid, f.Oid, "inputOid='%s' inputName='%s' inputConversion='%s'", txl.inputOid, txl.inputName, txl.inputConversion)
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assert.Equal(t, txl.expectedName, f.Name, "inputOid='%s' inputName='%s' inputConversion='%s'", txl.inputOid, txl.inputName, txl.inputConversion)
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}
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}
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func TestTableInit(t *testing.T) {
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tbl := Table{
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Oid: ".1.0.0.0",
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Fields: []Field{{Oid: ".999", Name: "foo"}},
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}
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err := tbl.init()
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require.NoError(t, err)
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assert.Equal(t, "testTable", tbl.Name)
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assert.Len(t, tbl.Fields, 4)
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assert.Contains(t, tbl.Fields, Field{Oid: ".999", Name: "foo", initialized: true})
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assert.Contains(t, tbl.Fields, Field{Oid: ".1.0.0.0.1.1", Name: "server", IsTag: true, initialized: true})
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assert.Contains(t, tbl.Fields, Field{Oid: ".1.0.0.0.1.2", Name: "connections", initialized: true})
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assert.Contains(t, tbl.Fields, Field{Oid: ".1.0.0.0.1.3", Name: "latency", initialized: true})
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}
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func TestSnmpInit(t *testing.T) {
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s := &Snmp{
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Tables: []Table{
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{Oid: "TEST::testTable"},
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},
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Fields: []Field{
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{Oid: "TEST::hostname"},
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},
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}
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err := s.init()
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require.NoError(t, err)
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assert.Len(t, s.Tables[0].Fields, 3)
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assert.Contains(t, s.Tables[0].Fields, Field{Oid: ".1.0.0.0.1.1", Name: "server", IsTag: true, initialized: true})
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assert.Contains(t, s.Tables[0].Fields, Field{Oid: ".1.0.0.0.1.2", Name: "connections", initialized: true})
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assert.Contains(t, s.Tables[0].Fields, Field{Oid: ".1.0.0.0.1.3", Name: "latency", initialized: true})
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assert.Equal(t, Field{
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Oid: ".1.0.0.1.1",
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Name: "hostname",
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initialized: true,
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}, s.Fields[0])
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}
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func TestGetSNMPConnection_v2(t *testing.T) {
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s := &Snmp{
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Timeout: internal.Duration{Duration: 3 * time.Second},
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Retries: 4,
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Version: 2,
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Community: "foo",
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}
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gsc, err := s.getConnection("1.2.3.4:567")
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require.NoError(t, err)
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gs := gsc.(gosnmpWrapper)
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assert.Equal(t, "1.2.3.4", gs.Target)
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assert.EqualValues(t, 567, gs.Port)
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assert.Equal(t, gosnmp.Version2c, gs.Version)
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assert.Equal(t, "foo", gs.Community)
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gsc, err = s.getConnection("1.2.3.4")
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require.NoError(t, err)
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gs = gsc.(gosnmpWrapper)
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assert.Equal(t, "1.2.3.4", gs.Target)
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assert.EqualValues(t, 161, gs.Port)
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}
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func TestGetSNMPConnection_v3(t *testing.T) {
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s := &Snmp{
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Version: 3,
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MaxRepetitions: 20,
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ContextName: "mycontext",
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SecLevel: "authPriv",
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SecName: "myuser",
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AuthProtocol: "md5",
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AuthPassword: "password123",
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PrivProtocol: "des",
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PrivPassword: "321drowssap",
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EngineID: "myengineid",
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EngineBoots: 1,
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EngineTime: 2,
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}
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gsc, err := s.getConnection("1.2.3.4")
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require.NoError(t, err)
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gs := gsc.(gosnmpWrapper)
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assert.Equal(t, gs.Version, gosnmp.Version3)
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sp := gs.SecurityParameters.(*gosnmp.UsmSecurityParameters)
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assert.Equal(t, "1.2.3.4", gsc.Host())
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assert.EqualValues(t, 20, gs.MaxRepetitions)
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assert.Equal(t, "mycontext", gs.ContextName)
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assert.Equal(t, gosnmp.AuthPriv, gs.MsgFlags&gosnmp.AuthPriv)
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assert.Equal(t, "myuser", sp.UserName)
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assert.Equal(t, gosnmp.MD5, sp.AuthenticationProtocol)
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assert.Equal(t, "password123", sp.AuthenticationPassphrase)
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assert.Equal(t, gosnmp.DES, sp.PrivacyProtocol)
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assert.Equal(t, "321drowssap", sp.PrivacyPassphrase)
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assert.Equal(t, "myengineid", sp.AuthoritativeEngineID)
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assert.EqualValues(t, 1, sp.AuthoritativeEngineBoots)
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assert.EqualValues(t, 2, sp.AuthoritativeEngineTime)
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}
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func TestGetSNMPConnection_caching(t *testing.T) {
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s := &Snmp{}
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gs1, err := s.getConnection("1.2.3.4")
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require.NoError(t, err)
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gs2, err := s.getConnection("1.2.3.4")
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require.NoError(t, err)
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gs3, err := s.getConnection("1.2.3.5")
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require.NoError(t, err)
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assert.True(t, gs1 == gs2)
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assert.False(t, gs2 == gs3)
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}
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func TestGosnmpWrapper_walk_retry(t *testing.T) {
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srvr, err := net.ListenUDP("udp4", &net.UDPAddr{})
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defer srvr.Close()
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require.NoError(t, err)
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reqCount := 0
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// Set up a WaitGroup to wait for the server goroutine to exit and protect
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// reqCount.
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// Even though simultaneous access is impossible because the server will be
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// blocked on ReadFrom, without this the race detector gets unhappy.
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wg := sync.WaitGroup{}
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wg.Add(1)
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go func() {
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defer wg.Done()
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buf := make([]byte, 256)
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for {
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_, addr, err := srvr.ReadFrom(buf)
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if err != nil {
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return
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}
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reqCount++
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srvr.WriteTo([]byte{'X'}, addr) // will cause decoding error
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}
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}()
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gs := &gosnmp.GoSNMP{
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Target: srvr.LocalAddr().(*net.UDPAddr).IP.String(),
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Port: uint16(srvr.LocalAddr().(*net.UDPAddr).Port),
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Version: gosnmp.Version2c,
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Community: "public",
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Timeout: time.Millisecond * 10,
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Retries: 1,
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}
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err = gs.Connect()
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require.NoError(t, err)
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conn := gs.Conn
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gsw := gosnmpWrapper{gs}
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err = gsw.Walk(".1.0.0", func(_ gosnmp.SnmpPDU) error { return nil })
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srvr.Close()
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wg.Wait()
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assert.Error(t, err)
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assert.False(t, gs.Conn == conn)
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assert.Equal(t, (gs.Retries+1)*2, reqCount)
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}
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func TestGosnmpWrapper_get_retry(t *testing.T) {
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srvr, err := net.ListenUDP("udp4", &net.UDPAddr{})
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defer srvr.Close()
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require.NoError(t, err)
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reqCount := 0
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// Set up a WaitGroup to wait for the server goroutine to exit and protect
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// reqCount.
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// Even though simultaneous access is impossible because the server will be
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// blocked on ReadFrom, without this the race detector gets unhappy.
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wg := sync.WaitGroup{}
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wg.Add(1)
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go func() {
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defer wg.Done()
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buf := make([]byte, 256)
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for {
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_, addr, err := srvr.ReadFrom(buf)
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if err != nil {
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return
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}
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reqCount++
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srvr.WriteTo([]byte{'X'}, addr) // will cause decoding error
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}
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}()
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gs := &gosnmp.GoSNMP{
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Target: srvr.LocalAddr().(*net.UDPAddr).IP.String(),
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Port: uint16(srvr.LocalAddr().(*net.UDPAddr).Port),
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Version: gosnmp.Version2c,
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Community: "public",
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Timeout: time.Millisecond * 10,
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Retries: 1,
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}
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err = gs.Connect()
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require.NoError(t, err)
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conn := gs.Conn
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gsw := gosnmpWrapper{gs}
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_, err = gsw.Get([]string{".1.0.0"})
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srvr.Close()
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wg.Wait()
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assert.Error(t, err)
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assert.False(t, gs.Conn == conn)
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assert.Equal(t, (gs.Retries+1)*2, reqCount)
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}
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func TestTableBuild_walk(t *testing.T) {
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tbl := Table{
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Name: "mytable",
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Fields: []Field{
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{
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Name: "myfield1",
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Oid: ".1.0.0.0.1.1",
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IsTag: true,
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},
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{
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Name: "myfield2",
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Oid: ".1.0.0.0.1.2",
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},
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{
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Name: "myfield3",
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Oid: ".1.0.0.0.1.3",
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Conversion: "float",
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},
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{
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Name: "myfield4",
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Oid: ".1.0.0.2.1.5",
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OidIndexSuffix: ".9.9",
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},
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},
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}
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tb, err := tbl.Build(tsc, true)
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require.NoError(t, err)
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assert.Equal(t, tb.Name, "mytable")
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rtr1 := RTableRow{
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Tags: map[string]string{"myfield1": "foo"},
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Fields: map[string]interface{}{
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"myfield2": 1,
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"myfield3": float64(0.123),
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"myfield4": 11,
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},
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}
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rtr2 := RTableRow{
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Tags: map[string]string{"myfield1": "bar"},
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Fields: map[string]interface{}{
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"myfield2": 2,
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"myfield3": float64(0.456),
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"myfield4": 22,
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},
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}
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assert.Len(t, tb.Rows, 2)
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assert.Contains(t, tb.Rows, rtr1)
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assert.Contains(t, tb.Rows, rtr2)
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}
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func TestTableBuild_noWalk(t *testing.T) {
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tbl := Table{
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Name: "mytable",
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Fields: []Field{
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{
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Name: "myfield1",
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Oid: ".1.0.0.1.1",
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IsTag: true,
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},
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{
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Name: "myfield2",
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Oid: ".1.0.0.1.2",
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},
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{
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Name: "myfield3",
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Oid: ".1.0.0.1.2",
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IsTag: true,
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},
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},
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}
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tb, err := tbl.Build(tsc, false)
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require.NoError(t, err)
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rtr := RTableRow{
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Tags: map[string]string{"myfield1": "baz", "myfield3": "234"},
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Fields: map[string]interface{}{"myfield2": 234},
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}
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assert.Len(t, tb.Rows, 1)
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assert.Contains(t, tb.Rows, rtr)
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}
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func TestGather(t *testing.T) {
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s := &Snmp{
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Agents: []string{"TestGather"},
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Name: "mytable",
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Fields: []Field{
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{
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Name: "myfield1",
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Oid: ".1.0.0.1.1",
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IsTag: true,
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},
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{
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Name: "myfield2",
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Oid: ".1.0.0.1.2",
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},
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{
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Name: "myfield3",
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Oid: "1.0.0.1.1",
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},
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},
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Tables: []Table{
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{
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Name: "myOtherTable",
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InheritTags: []string{"myfield1"},
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Fields: []Field{
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{
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Name: "myOtherField",
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Oid: ".1.0.0.0.1.4",
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},
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},
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},
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},
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|
|
connectionCache: map[string]snmpConnection{
|
|
"TestGather": tsc,
|
|
},
|
|
}
|
|
|
|
acc := &testutil.Accumulator{}
|
|
|
|
tstart := time.Now()
|
|
s.Gather(acc)
|
|
tstop := time.Now()
|
|
|
|
require.Len(t, acc.Metrics, 2)
|
|
|
|
m := acc.Metrics[0]
|
|
assert.Equal(t, "mytable", m.Measurement)
|
|
assert.Equal(t, "tsc", m.Tags["agent_host"])
|
|
assert.Equal(t, "baz", m.Tags["myfield1"])
|
|
assert.Len(t, m.Fields, 2)
|
|
assert.Equal(t, 234, m.Fields["myfield2"])
|
|
assert.Equal(t, "baz", m.Fields["myfield3"])
|
|
assert.True(t, tstart.Before(m.Time))
|
|
assert.True(t, tstop.After(m.Time))
|
|
|
|
m2 := acc.Metrics[1]
|
|
assert.Equal(t, "myOtherTable", m2.Measurement)
|
|
assert.Equal(t, "tsc", m2.Tags["agent_host"])
|
|
assert.Equal(t, "baz", m2.Tags["myfield1"])
|
|
assert.Len(t, m2.Fields, 1)
|
|
assert.Equal(t, 123456, m2.Fields["myOtherField"])
|
|
}
|
|
|
|
func TestGather_host(t *testing.T) {
|
|
s := &Snmp{
|
|
Agents: []string{"TestGather"},
|
|
Name: "mytable",
|
|
Fields: []Field{
|
|
{
|
|
Name: "host",
|
|
Oid: ".1.0.0.1.1",
|
|
IsTag: true,
|
|
},
|
|
{
|
|
Name: "myfield2",
|
|
Oid: ".1.0.0.1.2",
|
|
},
|
|
},
|
|
|
|
connectionCache: map[string]snmpConnection{
|
|
"TestGather": tsc,
|
|
},
|
|
}
|
|
|
|
acc := &testutil.Accumulator{}
|
|
|
|
s.Gather(acc)
|
|
|
|
require.Len(t, acc.Metrics, 1)
|
|
m := acc.Metrics[0]
|
|
assert.Equal(t, "baz", m.Tags["host"])
|
|
}
|
|
|
|
func TestFieldConvert(t *testing.T) {
|
|
testTable := []struct {
|
|
input interface{}
|
|
conv string
|
|
expected interface{}
|
|
}{
|
|
{[]byte("foo"), "", string("foo")},
|
|
{"0.123", "float", float64(0.123)},
|
|
{[]byte("0.123"), "float", float64(0.123)},
|
|
{float32(0.123), "float", float64(float32(0.123))},
|
|
{float64(0.123), "float", float64(0.123)},
|
|
{123, "float", float64(123)},
|
|
{123, "float(0)", float64(123)},
|
|
{123, "float(4)", float64(0.0123)},
|
|
{int8(123), "float(3)", float64(0.123)},
|
|
{int16(123), "float(3)", float64(0.123)},
|
|
{int32(123), "float(3)", float64(0.123)},
|
|
{int64(123), "float(3)", float64(0.123)},
|
|
{uint(123), "float(3)", float64(0.123)},
|
|
{uint8(123), "float(3)", float64(0.123)},
|
|
{uint16(123), "float(3)", float64(0.123)},
|
|
{uint32(123), "float(3)", float64(0.123)},
|
|
{uint64(123), "float(3)", float64(0.123)},
|
|
{"123", "int", int64(123)},
|
|
{[]byte("123"), "int", int64(123)},
|
|
{float32(12.3), "int", int64(12)},
|
|
{float64(12.3), "int", int64(12)},
|
|
{int(123), "int", int64(123)},
|
|
{int8(123), "int", int64(123)},
|
|
{int16(123), "int", int64(123)},
|
|
{int32(123), "int", int64(123)},
|
|
{int64(123), "int", int64(123)},
|
|
{uint(123), "int", int64(123)},
|
|
{uint8(123), "int", int64(123)},
|
|
{uint16(123), "int", int64(123)},
|
|
{uint32(123), "int", int64(123)},
|
|
{uint64(123), "int", int64(123)},
|
|
{[]byte("abcdef"), "hwaddr", "61:62:63:64:65:66"},
|
|
{"abcdef", "hwaddr", "61:62:63:64:65:66"},
|
|
{[]byte("abcd"), "ipaddr", "97.98.99.100"},
|
|
{"abcd", "ipaddr", "97.98.99.100"},
|
|
{[]byte("abcdefghijklmnop"), "ipaddr", "6162:6364:6566:6768:696a:6b6c:6d6e:6f70"},
|
|
}
|
|
|
|
for _, tc := range testTable {
|
|
act, err := fieldConvert(tc.conv, tc.input)
|
|
if !assert.NoError(t, err, "input=%T(%v) conv=%s expected=%T(%v)", tc.input, tc.input, tc.conv, tc.expected, tc.expected) {
|
|
continue
|
|
}
|
|
assert.EqualValues(t, tc.expected, act, "input=%T(%v) conv=%s expected=%T(%v)", tc.input, tc.input, tc.conv, tc.expected, tc.expected)
|
|
}
|
|
}
|
|
|
|
func TestError(t *testing.T) {
|
|
e := fmt.Errorf("nested error")
|
|
err := Errorf(e, "top error %d", 123)
|
|
require.Error(t, err)
|
|
|
|
ne, ok := err.(NestedError)
|
|
require.True(t, ok)
|
|
assert.Equal(t, e, ne.NestedErr)
|
|
|
|
assert.Contains(t, err.Error(), "top error 123")
|
|
assert.Contains(t, err.Error(), "nested error")
|
|
}
|