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influxdb/telegraf_test.go

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Go
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package platform
import (
"encoding/json"
"fmt"
"reflect"
"testing"
"github.com/BurntSushi/toml"
"github.com/influxdata/platform/telegraf/plugins"
"github.com/influxdata/platform/telegraf/plugins/outputs"
"github.com/google/go-cmp/cmp"
"github.com/influxdata/platform/telegraf/plugins/inputs"
)
type unsupportedPluginType struct {
Field string `json:"field"`
}
func (u *unsupportedPluginType) TOML() string {
return ""
}
func (u *unsupportedPluginType) PluginName() string {
return "bad_type"
}
func (u *unsupportedPluginType) Type() plugins.Type {
return plugins.Aggregator
}
func (u *unsupportedPluginType) UnmarshalTOML(data interface{}) error {
return nil
}
type unsupportedPlugin struct {
Field string `json:"field"`
}
func (u *unsupportedPlugin) TOML() string {
return ""
}
func (u *unsupportedPlugin) PluginName() string {
return "kafka"
}
func (u *unsupportedPlugin) Type() plugins.Type {
return plugins.Output
}
func (u *unsupportedPlugin) UnmarshalTOML(data interface{}) error {
return nil
}
func TestTelegrafConfigJSON(t *testing.T) {
id1, _ := IDFromString("020f755c3c082000")
id2, _ := IDFromString("020f755c3c082002")
cases := []struct {
name string
cfg *TelegrafConfig
err error
}{
{
name: "regular config",
cfg: &TelegrafConfig{
ID: *id1,
Name: "n1",
LastModBy: *id2,
Agent: TelegrafAgentConfig{
Interval: 4000,
},
Plugins: []TelegrafPlugin{
{
Comment: "comment1",
Config: &inputs.File{
Files: []string{"f1", "f2"},
},
},
{
Comment: "comment2",
Config: &inputs.CPUStats{},
},
{
Comment: "comment3",
Config: &outputs.File{Files: []outputs.FileConfig{
{Typ: "stdout"},
}},
},
{
Comment: "comment4",
Config: &outputs.InfluxDBV2{
URLs: []string{"url1", "url2"},
Token: "tok1",
},
},
},
},
},
{
name: "unsupported plugin type",
cfg: &TelegrafConfig{
ID: *id1,
Name: "n1",
LastModBy: *id2,
Plugins: []TelegrafPlugin{
{
Comment: "comment3",
Config: &unsupportedPluginType{
Field: "f1",
},
},
},
},
err: &Error{
Code: EInvalid,
Msg: fmt.Sprintf(ErrUnsupportTelegrafPluginType, "aggregator"),
Op: "unmarshal telegraf config raw plugin",
},
},
{
name: "unsupported plugin",
cfg: &TelegrafConfig{
ID: *id1,
Name: "n1",
LastModBy: *id2,
Plugins: []TelegrafPlugin{
{
Config: &unsupportedPlugin{
Field: "f2",
},
},
},
},
err: &Error{
Code: EInvalid,
Msg: fmt.Sprintf(ErrUnsupportTelegrafPluginName, "kafka", plugins.Output),
Op: "unmarshal telegraf config raw plugin",
},
},
}
for _, c := range cases {
result, err := json.Marshal(c.cfg)
// encode testing
if err != nil {
t.Fatalf("%s encode failed, want cfg: %v, should be nil", c.name, err)
}
got := new(TelegrafConfig)
err = json.Unmarshal([]byte(result), got)
if diff := cmp.Diff(err, c.err); diff != "" {
t.Fatalf("%s decode failed, got err: %v, should be %v", c.name, err, c.err)
}
// use DeepEqual to ignore unexported field panic
if c.err == nil && !reflect.DeepEqual(got, c.cfg) {
t.Fatalf("%s decode failed, want: %v, got: %v", c.name, c.cfg, got)
}
}
}
func TestTOML(t *testing.T) {
id1, _ := IDFromString("020f755c3c082000")
id2, _ := IDFromString("020f755c3c082001")
tc := &TelegrafConfig{
ID: *id1,
Name: "n1",
LastModBy: *id2,
Agent: TelegrafAgentConfig{
Interval: 4000,
},
Plugins: []TelegrafPlugin{
{
Comment: "comment1",
Config: &inputs.File{
Files: []string{"f1", "f2"},
},
},
{
Comment: "comment2",
Config: &inputs.CPUStats{},
},
{
Comment: "comment3",
Config: &outputs.File{Files: []outputs.FileConfig{
{Typ: "stdout"},
}},
},
{
Comment: "comment4",
Config: &outputs.InfluxDBV2{
URLs: []string{
"url1",
"url2",
},
Token: "token1",
Organization: "org1",
Bucket: "bucket1",
},
},
},
}
want := `# Configuration for telegraf agent
[agent]
## Default data collection interval for all inputs
interval = "4s"
## Rounds collection interval to 'interval'
## ie, if interval="10s" then always collect on :00, :10, :20, etc.
round_interval = true
## Telegraf will send metrics to outputs in batches of at most
## metric_batch_size metrics.
## This controls the size of writes that Telegraf sends to output plugins.
metric_batch_size = 1000
## For failed writes, telegraf will cache metric_buffer_limit metrics for each
## output, and will flush this buffer on a successful write. Oldest metrics
## are dropped first when this buffer fills.
## This buffer only fills when writes fail to output plugin(s).
metric_buffer_limit = 10000
## Collection jitter is used to jitter the collection by a random amount.
## Each plugin will sleep for a random time within jitter before collecting.
## This can be used to avoid many plugins querying things like sysfs at the
## same time, which can have a measurable effect on the system.
collection_jitter = "0s"
## Default flushing interval for all outputs. Maximum flush_interval will be
## flush_interval + flush_jitter
flush_interval = "10s"
## Jitter the flush interval by a random amount. This is primarily to avoid
## large write spikes for users running a large number of telegraf instances.
## ie, a jitter of 5s and interval 10s means flushes will happen every 10-15s
flush_jitter = "0s"
## By default or when set to "0s", precision will be set to the same
## timestamp order as the collection interval, with the maximum being 1s.
## ie, when interval = "10s", precision will be "1s"
## when interval = "250ms", precision will be "1ms"
## Precision will NOT be used for service inputs. It is up to each individual
## service input to set the timestamp at the appropriate precision.
## Valid time units are "ns", "us" (or "µs"), "ms", "s".
precision = ""
## Logging configuration:
## Run telegraf with debug log messages.
debug = false
## Run telegraf in quiet mode (error log messages only).
quiet = false
## Specify the log file name. The empty string means to log to stderr.
logfile = ""
## Override default hostname, if empty use os.Hostname()
hostname = ""
## If set to true, do no set the "host" tag in the telegraf agent.
omit_hostname = false
[[inputs.file]]
## Files to parse each interval.
## These accept standard unix glob matching rules, but with the addition of
## ** as a "super asterisk". ie:
## /var/log/**.log -> recursively find all .log files in /var/log
## /var/log/*/*.log -> find all .log files with a parent dir in /var/log
## /var/log/apache.log -> only read the apache log file
files = ["f1", "f2"]
## The dataformat to be read from files
## Each data format has its own unique set of configuration options, read
## more about them here:
## https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_INPUT.md
data_format = "influx"
[[inputs.cpu]]
## Whether to report per-cpu stats or not
percpu = true
## Whether to report total system cpu stats or not
totalcpu = true
## If true, collect raw CPU time metrics.
collect_cpu_time = false
## If true, compute and report the sum of all non-idle CPU states.
report_active = false
[[outputs.file]]
## Files to write to, "stdout" is a specially handled file.
files = ["stdout"]
[[outputs.influxdb_v2]]
## The URLs of the InfluxDB cluster nodes.
##
## Multiple URLs can be specified for a single cluster, only ONE of the
## urls will be written to each interval.
## urls exp: http://127.0.0.1:9999
urls = ["url1", "url2"]
## Token for authentication.
token = "token1"
## Organization is the name of the organization you wish to write to; must exist.
organization = "org1"
## Destination bucket to write into.
bucket = "bucket1"
`
if result := tc.TOML(); result != want {
t.Fatalf("telegraf config's toml is incorrect, got %s", result)
}
tcr := new(TelegrafConfig)
err := toml.Unmarshal([]byte(want), tcr)
if err != nil {
t.Fatalf("telegraf toml parsing issue %s", err.Error())
}
if reflect.DeepEqual(tcr, tc) {
t.Fatalf("telegraf toml parsing issue, want %q, got %q", tc, tcr)
}
}
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