Crawler CLI

The crawler spawns (via cluster fork) a social-specific crawler with the corresponding configuration.

The crawler MUST be configurable completely via command line.

Crawler options (passed like the ffpeg interface)

Options

The options can be specified multiple times or can be comma separated ES: crawler -t test -t test -t test2 is equivalent to crawler -t test,test,test2

Input

• List of social networks to use
  • ES: -s twitter -s instagram
• REQUIRED List of keys PER social network used
  • ES: -s twitter -s instagram -k:0:key "key" -k:0:secret "secret" ...
• AT LEAST 1 REQUIRED The search is performed using either
  • List of tags to search for (can be social-specific)
    • ES: -t:0 EXPO2015 -t EXPO
  • List of Usernames (can be social-specific)
    • ES: -u ExpoMilano -u:0 ExpoMilano2015
  • (EXTRA) A GeoJSON to be converted in a grid
    • ES: -g path/to/the/file.json
• OPTIONAL List of tags to exclude
  • ES: -e NOEXPO

Output (NOT IMPLEMENTED)

The output is identified by a key|identifier that will be added to the output as a identifier field.

• The identifier MUST be present and can be overrided platform specific
  • ES: -i expo -i:0 expoTw The output can be specified by one or many of the following values for the -o flag:
• console
• file
  • The identifier is used in the filename
• db
  • The identifier will be used as field|collectionName|DBname?
• stream (EXTRA)
  • Must specify the port

Data format

Each post will have the folllowing format:

{
    identifier: "asdadsasdasd", // The identifier used for this series of Data
    id: "", // The string representation of the ID
    date: new Date(), // A Date object representing the creation date (UTC format).
    provider: "", // The provider for this post, corresponds to the social network used.
    author: "", // The author username
    authorId: "", // The string representation of the id of the author
    text: "", // The text of the Post (if available)
    
    
    location: {  // The location of the Post (as GeoJSON Point), if available
        type: 'Point',  // Fixed
        coordinates: [ lon, lat ] // the coordinates in the order [ longitude, atitude ]
    },
    tags: [ "asdasd", "qweqweqwe", ... ], // The list of tags present in this post
    
    raw: {} // The row data as retrieved from the social network
}