Class: Blazer::Adapters::InfluxdbAdapter

Inherits:
BaseAdapter show all
Defined in:
lib/blazer/adapters/influxdb_adapter.rb

Instance Attribute Summary

Attributes inherited from BaseAdapter

#data_source

Instance Method Summary collapse

Methods inherited from BaseAdapter

#cachable?, #cancel, #cost, #explain, #initialize, #reconnect, #schema

Constructor Details

This class inherits a constructor from Blazer::Adapters::BaseAdapter

Instance Method Details

#preview_statement ⇒ Object 



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# File 'lib/blazer/adapters/influxdb_adapter.rb', line 34

def preview_statement
  "SELECT * FROM {table} LIMIT 10"
end

#run_statement(statement, comment) ⇒ Object 



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# File 'lib/blazer/adapters/influxdb_adapter.rb', line 4

def run_statement(statement, comment)
  columns = []
  rows = []
  error = nil

  begin
    result = client.query(statement, denormalize: false).first
    columns = result["columns"]
    rows = result["values"]

    # parse time columns
    # current approach isn't ideal, but result doesn't include types
    # another approach would be to check the format
    time_index = columns.index("time")
    if time_index
      rows.each do |row|
        row[time_index] = Time.parse(row[time_index]) if row[time_index]
      end
    end
  rescue => e
    error = e.message
  end

  [columns, rows, error]
end

#tables ⇒ Object 



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# File 'lib/blazer/adapters/influxdb_adapter.rb', line 30

def tables
  client.list_series
end