Revert "exec plugin: allow using glob pattern in command list"

This reverts commit 6381efa7ce.

CHANGELOG.md

@@ -68,9 +68,6 @@ based on _prefix_ in addition to globs. This means that a filter like
 - [#1107](https://github.com/influxdata/telegraf/issues/1107): Support lustre2 job stats. Thanks @hanleyja!
 - [#1122](https://github.com/influxdata/telegraf/pull/1122): Support setting config path through env variable and default paths.
 - [#1128](https://github.com/influxdata/telegraf/pull/1128): MongoDB jumbo chunks metric for MongoDB input plugin
-- [#1110](https://github.com/influxdata/telegraf/pull/1110): Sanitize * to - in graphite serializer. Thanks @goodeggs!
-- [#1118](https://github.com/influxdata/telegraf/pull/1118): Sanitize Counter names for `win_perf_counters` input.
-- [#1127](https://github.com/influxdata/telegraf/pull/1127): Support for glob patterns in exec plugin commands configuration.
 
 ### Bugfixes
 

plugins/inputs/exec/README.md

@@ -6,32 +6,22 @@ Please also see: [Telegraf Input Data Formats](https://github.com/influxdata/tel
 
 #### Configuration
 
-In this example a script called ```/tmp/test.sh```, a script called ```/tmp/test2.sh```, and
-all scripts matching glob pattern ```/tmp/collect_*.sh``` are configured for ```[[inputs.exec]]```
-in JSON format. Glob patterns are matched on every run, so adding new scripts that match the pattern
-will cause them to be picked up immediately.
+In this example a script called ```/tmp/test.sh``` and a script called ```/tmp/test2.sh```
+are configured for ```[[inputs.exec]]``` in JSON format.
 
 ```
 # Read flattened metrics from one or more commands that output JSON to stdout
 [[inputs.exec]]
-  ## Full path to executable with parameters,
-  ## or a glob pattern to run all matching files.
-  ## the glob pattern will be run at every interval, so new files will
-  ## automatically be picked up.
-  commands = ["/tmp/test.sh", "/usr/bin/mycollector --foo=bar", "/tmp/collect_*.sh"]
+  # Shell/commands array
+  commands = ["/tmp/test.sh", "/tmp/test2.sh"]
 
-  ## Timeout for each command to complete.
-  timeout = "5s"
-
-  ## measurement name suffix (for separating different commands)
-  name_suffix = "_mycollector"
-
-  ## Data format to consume.
-  ## Each data format has it's 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 to consume.
+  # NOTE json only reads numerical measurements, strings and booleans are ignored.
   data_format = "json"
 
+  # measurement name suffix (for separating different commands)
+  name_suffix = "_mycollector"
+
   ## Below configuration will be used for data_format = "graphite", can be ignored for other data_format
   ## If matching multiple measurement files, this string will be used to join the matched values.
   #separator = "."
@@ -190,3 +180,4 @@ sensu.metric.net.server0.eth0.rx_dropped 0 1444234982
 The templates configuration will be used to parse the graphite metrics to support influxdb/opentsdb tagging store engines.
 
 More detail information about templates, please refer to [The graphite Input](https://github.com/influxdata/influxdb/blob/master/services/graphite/README.md)
+

plugins/inputs/exec/exec.go

@@ -4,7 +4,6 @@ import (
 	"bytes"
 	"fmt"
 	"os/exec"
-	"path/filepath"
 	"sync"
 	"syscall"
 	"time"
@@ -19,11 +18,8 @@ import (
 )
 
 const sampleConfig = `
-  ## Full path to executable with parameters,
-  ## or a glob pattern to run all matching files.
-  ## the glob pattern will be run at every interval, so new files will
-  ## automatically be picked up.
-  commands = ["/tmp/test.sh", "/usr/bin/collector --foo=bar", "/tmp/collect_*.sh"]
+  ## Commands array
+  commands = ["/tmp/test.sh", "/usr/bin/mycollector --foo=bar"]
 
   ## Timeout for each command to complete.
   timeout = "5s"
@@ -154,19 +150,10 @@ func (e *Exec) Gather(acc telegraf.Accumulator) error {
 		e.Command = ""
 	}
 
-	commands := make([]string, len(e.Commands))
-	for _, pattern := range e.Commands {
-		matches, err := filepath.Glob(pattern)
-		if err != nil {
-			return err
-		}
-		commands = append(commands, matches...)
-	}
+	e.errChan = make(chan error, len(e.Commands))
 
-	e.errChan = make(chan error, len(commands))
-
-	e.wg.Add(len(commands))
-	for _, command := range commands {
+	e.wg.Add(len(e.Commands))
+	for _, command := range e.Commands {
 		go e.ProcessCommand(command, acc)
 	}
 	e.wg.Wait()