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  1. Core Server
  2. SERVER-18643

Output redirection from mongo shell

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    • Service Arch

      I wish there is a way on the mongo shell for redirecting the output to STDERR or files.

      The current workaround is just adding some tags as boundaries and parsing the output from a bash script or another application.

      ...
print("<STDOUT>")
print(multiline_json)
print("</STDOUT>")
print("<STDERR>")
print(multiline_json)
print("</STDERR>")
...

      And at the bash script side:

      #!/bin/bash
COMMAND="mongo <args>"
OUTPUT=$(${COMMAND})

function STDERR {
  cat - 1>&2
}

function STDFILE {
  if [ -z "$1" ]; then
    return
  fi
  cat - >> $1
}

WRITE_ERR=0;
for line in $OUTPUT; do
  if [[ "$line" == "<STDERR>"* ]]; then
    WRITE_ERR=1
    continue
  elif [[ "$line" == "</STDERR>"* ]]; then
    WRITE_ERR=0
    continue
  fi
  if [ "$WRITE_ERR" -eq "1" ]; then
    printf "%s\n" "$line" | STDERR
  else
    printf "%s\n" "$line"
  fi
done

            Assignee:
            backlog-server-servicearch [DO NOT USE] Backlog - Service Architecture
            Reporter:
            ricardo.lorenzo Ricardo Lorenzo
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              Created:
              Updated:
              Resolved: