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dbschema.md

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Database schema

Database tinode

Table users

users stores user accounts

Fields:

  • Id user id, primary key
  • CreatedAt timestamp when the user was created
  • UpdatedAt timestamp when user metadata was updated
  • DeletedAt currently unused
  • Access user's default access level for peer to peer topics
  • Auth, Anon permissions for authenticated and anonymous
  • Username username part of "basic" authentication
  • Passhash bcrypt password part of "basic" authentication
  • Public application-defined data
  • State currently unused

Indexes:

  • Id primary key
  • Username index

Sample:

{
 "Access": {
  "Anon": 0 ,
  "Auth": 7
 } ,
 "CreatedAt": Wed Oct 14 2015 08:06:50 GMT+00:00 ,
 "DeletedAt": null ,
 "Id":  "_hyPZc_c0CA" ,
 "Passhash": <binary, 60 bytes, "24 32 61 24 31 30..."> ,
 "Public":  "Bob Smith" ,
 "State": 1 ,
 "UpdatedAt": Wed Oct 14 2015 08:06:50 GMT+00:00 ,
 "Username":  "bob"
}

Table topics

The table stores topics.

Fields:

  • Id unused
  • CreatedAt topic creation time
  • UpdatedAt timestamp of the last change to topic metadata
  • DeletedAt currently unused
  • Access stores topic's default access permissions
  • Auth, Anon permissions for authenticated and anonymous users respectively
  • LastMessageAt timestamp of the last message sent through the topic
  • Name topic name
  • Public application-defined data
  • State currently unused
  • UseBt currently unused

Indexes:

  • Id primary key
  • Name index

Sample:

{
 "Access": {
  "Anon": 64 ,
  "Auth": 64
 } ,
 "CreatedAt": Thu Oct 15 2015 04:06:51 GMT+00:00 ,
 "DeletedAt": null ,
 "Id":  "9lKtRlK22z8" ,
 "LastMessageAt": Sat Oct 17 2015 13:51:56 GMT+00:00 ,
 "Name":  "p2pPf5tU9aEakY_KhNzrN7avA" ,
 "Public": null ,
 "State": 0 ,
 "UpdatedAt": Thu Oct 15 2015 04:06:51 GMT+00:00 ,
 "UseBt": false
}

Table subscriptions

The table stores relashinships between users and topics.

Fields:

  • Id used for object retrieval
  • CreatedAt timestamp when the user was created
  • UpdatedAt timestamp when user metadata was updated
  • DeletedAt currently unused
  • ClearedAt user soft-deleted messages older than this timestamp
  • Topic name of the topic subscribed to
  • User subscriber's user ID
  • LastMessageAt timestamp of the last message sent through the topic which given user was able to receive
  • LastSeen when the user last accessed the topic from the given client
  • tag client ID
  • when timestamp of the last access
  • ModeWant access mode that user wants when accessing the topic
  • ModeGiven access mode granted to user by the topic
  • Private application-defined data, accessible by the user only

Indexes:

  • Id primary key composed as "topic name ':' user ID"
  • User_UpdatedAt compound index ["User", "UpdatedAt"]
  • Topic_UpdatedAt compound index ["Topic", "UpdatedAt"]

Sample:

{
 "ClearedAt": null ,
 "CreatedAt": Thu Oct 15 2015 10:24:51 GMT+00:00 ,
 "DeletedAt": null ,
 "Id":  "grp27bT-X_W8__6:px8jR3_EtDk" ,
 "LastMessageAt": null ,
 "LastSeen": null , // NEEDS BETTER SAMPLE
 "ModeGiven": 7 ,
 "ModeWant": 7 ,
 "Private":  "Kirgudu" ,
 "Topic":  "grp27bT-X_W8__6" ,
 "UpdatedAt": Thu Oct 15 2015 10:24:51 GMT+00:00 ,
 "User":  "px8jR3_EtDk"
}

Table messages

The table stores {data} messages

Fields:

  • Id currently unused
  • CreatedAt timestamp when the message was created
  • UpdatedAt unused, created for consistency
  • DeletedAt currently unused
  • From ID of the user who generated this message
  • Topic which routed this message
  • Content application-defined message payload

Indexes:

  • Id primary key
  • Topic_CreatedAt compound index ["Topic", "CreatedAt"]

Sample:

{
 "Content":  "Cogito cogito ergo cogito sum." ,
 "CreatedAt": Mon Oct 19 2015 12:20:01 GMT+00:00 ,
 "DeletedAt": null ,
 "From":  "BVbQIzu7hag" ,
 "Id":  "Zn1rC3UuhjE" ,
 "Topic":  "grpJ-l4wO0Fwvy3" ,
 "UpdatedAt": Mon Oct 19 2015 12:20:01 GMT+00:00
}

Table _uniques

The table is used to ensure uniqueness of user names because RethinkDB does not support unique secondary indexes natively. The unique values are stored as primary key entries in the form "table name '!' field name '!' value"

  • id primary key

Sample:

{
"id":  "users!username!bob"
}