282 lines
7.0 KiB
Go
282 lines
7.0 KiB
Go
package exec
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import (
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"bytes"
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"fmt"
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"runtime"
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"testing"
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"time"
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"github.com/influxdata/telegraf/plugins/parsers"
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"github.com/influxdata/telegraf/testutil"
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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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// Midnight 9/22/2015
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const baseTimeSeconds = 1442905200
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const validJson = `
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{
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"status": "green",
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"num_processes": 82,
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"cpu": {
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"status": "red",
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"nil_status": null,
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"used": 8234,
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"free": 32
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},
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"percent": 0.81,
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"users": [0, 1, 2, 3]
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}`
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const malformedJson = `
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{
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"status": "green",
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`
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const lineProtocol = "cpu,host=foo,datacenter=us-east usage_idle=99,usage_busy=1\n"
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const lineProtocolEmpty = ""
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const lineProtocolShort = "ab"
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const lineProtocolMulti = `
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cpu,cpu=cpu0,host=foo,datacenter=us-east usage_idle=99,usage_busy=1
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cpu,cpu=cpu1,host=foo,datacenter=us-east usage_idle=99,usage_busy=1
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cpu,cpu=cpu2,host=foo,datacenter=us-east usage_idle=99,usage_busy=1
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cpu,cpu=cpu3,host=foo,datacenter=us-east usage_idle=99,usage_busy=1
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cpu,cpu=cpu4,host=foo,datacenter=us-east usage_idle=99,usage_busy=1
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cpu,cpu=cpu5,host=foo,datacenter=us-east usage_idle=99,usage_busy=1
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cpu,cpu=cpu6,host=foo,datacenter=us-east usage_idle=99,usage_busy=1
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`
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type CarriageReturnTest struct {
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input []byte
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output []byte
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}
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var crTests = []CarriageReturnTest{
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{[]byte{0x4c, 0x69, 0x6e, 0x65, 0x20, 0x31, 0x0d, 0x0a, 0x4c, 0x69,
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0x6e, 0x65, 0x20, 0x32, 0x0d, 0x0a, 0x4c, 0x69, 0x6e, 0x65,
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0x20, 0x33},
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[]byte{0x4c, 0x69, 0x6e, 0x65, 0x20, 0x31, 0x0a, 0x4c, 0x69, 0x6e,
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0x65, 0x20, 0x32, 0x0a, 0x4c, 0x69, 0x6e, 0x65, 0x20, 0x33}},
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{[]byte{0x4c, 0x69, 0x6e, 0x65, 0x20, 0x31, 0x0a, 0x4c, 0x69, 0x6e,
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0x65, 0x20, 0x32, 0x0a, 0x4c, 0x69, 0x6e, 0x65, 0x20, 0x33},
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[]byte{0x4c, 0x69, 0x6e, 0x65, 0x20, 0x31, 0x0a, 0x4c, 0x69, 0x6e,
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0x65, 0x20, 0x32, 0x0a, 0x4c, 0x69, 0x6e, 0x65, 0x20, 0x33}},
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{[]byte{0x54, 0x68, 0x69, 0x73, 0x20, 0x69, 0x73, 0x20, 0x61, 0x6c,
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0x6c, 0x20, 0x6f, 0x6e, 0x65, 0x20, 0x62, 0x69, 0x67, 0x20,
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0x6c, 0x69, 0x6e, 0x65},
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[]byte{0x54, 0x68, 0x69, 0x73, 0x20, 0x69, 0x73, 0x20, 0x61, 0x6c,
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0x6c, 0x20, 0x6f, 0x6e, 0x65, 0x20, 0x62, 0x69, 0x67, 0x20,
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0x6c, 0x69, 0x6e, 0x65}},
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}
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type runnerMock struct {
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out []byte
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errout []byte
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err error
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}
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func newRunnerMock(out []byte, errout []byte, err error) Runner {
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return &runnerMock{
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out: out,
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errout: errout,
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err: err,
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}
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}
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func (r runnerMock) Run(command string, _ time.Duration) ([]byte, []byte, error) {
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return r.out, r.errout, r.err
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}
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func TestExec(t *testing.T) {
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parser, _ := parsers.NewParser(&parsers.Config{
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DataFormat: "json",
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MetricName: "exec",
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})
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e := &Exec{
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log: testutil.Logger{},
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runner: newRunnerMock([]byte(validJson), nil, nil),
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Commands: []string{"testcommand arg1"},
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parser: parser,
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}
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var acc testutil.Accumulator
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err := acc.GatherError(e.Gather)
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require.NoError(t, err)
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assert.Equal(t, acc.NFields(), 8, "non-numeric measurements should be ignored")
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fields := map[string]interface{}{
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"num_processes": float64(82),
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"cpu_used": float64(8234),
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"cpu_free": float64(32),
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"percent": float64(0.81),
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"users_0": float64(0),
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"users_1": float64(1),
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"users_2": float64(2),
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"users_3": float64(3),
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}
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acc.AssertContainsFields(t, "exec", fields)
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}
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func TestExecMalformed(t *testing.T) {
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parser, _ := parsers.NewParser(&parsers.Config{
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DataFormat: "json",
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MetricName: "exec",
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})
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e := &Exec{
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log: testutil.Logger{},
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runner: newRunnerMock([]byte(malformedJson), nil, nil),
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Commands: []string{"badcommand arg1"},
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parser: parser,
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}
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var acc testutil.Accumulator
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require.Error(t, acc.GatherError(e.Gather))
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assert.Equal(t, acc.NFields(), 0, "No new points should have been added")
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}
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func TestCommandError(t *testing.T) {
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parser, _ := parsers.NewParser(&parsers.Config{
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DataFormat: "json",
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MetricName: "exec",
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})
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e := &Exec{
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log: testutil.Logger{},
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runner: newRunnerMock(nil, nil, fmt.Errorf("exit status code 1")),
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Commands: []string{"badcommand"},
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parser: parser,
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}
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var acc testutil.Accumulator
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require.Error(t, acc.GatherError(e.Gather))
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assert.Equal(t, acc.NFields(), 0, "No new points should have been added")
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}
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func TestExecCommandWithGlob(t *testing.T) {
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parser, _ := parsers.NewValueParser("metric", "string", nil)
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e := NewExec()
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e.Commands = []string{"/bin/ech* metric_value"}
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e.SetParser(parser)
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var acc testutil.Accumulator
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err := acc.GatherError(e.Gather)
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require.NoError(t, err)
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fields := map[string]interface{}{
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"value": "metric_value",
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}
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acc.AssertContainsFields(t, "metric", fields)
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}
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func TestExecCommandWithoutGlob(t *testing.T) {
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parser, _ := parsers.NewValueParser("metric", "string", nil)
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e := NewExec()
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e.Commands = []string{"/bin/echo metric_value"}
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e.SetParser(parser)
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var acc testutil.Accumulator
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err := acc.GatherError(e.Gather)
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require.NoError(t, err)
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fields := map[string]interface{}{
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"value": "metric_value",
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}
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acc.AssertContainsFields(t, "metric", fields)
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}
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func TestExecCommandWithoutGlobAndPath(t *testing.T) {
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parser, _ := parsers.NewValueParser("metric", "string", nil)
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e := NewExec()
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e.Commands = []string{"echo metric_value"}
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e.SetParser(parser)
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var acc testutil.Accumulator
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err := acc.GatherError(e.Gather)
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require.NoError(t, err)
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fields := map[string]interface{}{
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"value": "metric_value",
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}
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acc.AssertContainsFields(t, "metric", fields)
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}
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func TestTruncate(t *testing.T) {
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tests := []struct {
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name string
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bufF func() *bytes.Buffer
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expF func() *bytes.Buffer
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}{
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{
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name: "should not truncate",
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bufF: func() *bytes.Buffer {
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var b bytes.Buffer
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b.WriteString("hello world")
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return &b
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},
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expF: func() *bytes.Buffer {
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var b bytes.Buffer
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b.WriteString("hello world")
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return &b
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},
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},
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{
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name: "should truncate up to the new line",
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bufF: func() *bytes.Buffer {
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var b bytes.Buffer
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b.WriteString("hello world\nand all the people")
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return &b
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},
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expF: func() *bytes.Buffer {
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var b bytes.Buffer
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b.WriteString("hello world...")
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return &b
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},
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},
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{
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name: "should truncate to the MaxStderrBytes",
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bufF: func() *bytes.Buffer {
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var b bytes.Buffer
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for i := 0; i < 2*MaxStderrBytes; i++ {
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b.WriteByte('b')
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}
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return &b
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},
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expF: func() *bytes.Buffer {
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var b bytes.Buffer
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for i := 0; i < MaxStderrBytes; i++ {
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b.WriteByte('b')
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}
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b.WriteString("...")
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return &b
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},
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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res := truncate(*tt.bufF())
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require.Equal(t, tt.expF().Bytes(), res.Bytes())
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})
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}
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}
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func TestRemoveCarriageReturns(t *testing.T) {
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if runtime.GOOS == "windows" {
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// Test that all carriage returns are removed
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for _, test := range crTests {
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b := bytes.NewBuffer(test.input)
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out := removeCarriageReturns(*b)
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assert.True(t, bytes.Equal(test.output, out.Bytes()))
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}
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} else {
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// Test that the buffer is returned unaltered
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for _, test := range crTests {
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b := bytes.NewBuffer(test.input)
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out := removeCarriageReturns(*b)
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assert.True(t, bytes.Equal(test.input, out.Bytes()))
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}
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}
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}
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