[Extra/rest 2.5] Add stats for os and ds, Fix jail status

[RogerKSI]

Implementation details

• Add last_request for Oracle script and data source.
• Add stats for requests of each os and ds per day.
• Add view to query last 1 day of number of requests of ds.
• Fix jail status for unbonding case

SQL

ALTER TABLE oracle_scripts ADD last_request timestamp WITHOUT TIME ZONE;
ALTER TABLE data_sources ADD last_request timestamp WITHOUT TIME ZONE;

CREATE TABLE oracle_script_requests_per_days (
        date DATE NOT NULL, 
        oracle_script_id INTEGER NOT NULL, 
        count INTEGER NOT NULL, 
        PRIMARY KEY (date, oracle_script_id), 
        FOREIGN KEY(oracle_script_id) REFERENCES oracle_scripts (id)
)

CREATE TABLE data_source_requests_per_days (
        date DATE NOT NULL, 
        data_source_id INTEGER NOT NULL, 
        count INTEGER NOT NULL, 
        PRIMARY KEY (date, data_source_id), 
        FOREIGN KEY(data_source_id) REFERENCES data_sources (id)
)

CREATE VIEW data_source_statistic_last_1_day
AS
  SELECT data_sources.id,
         count(*) AS count
  FROM   data_sources
         join raw_requests
           ON data_sources.id = raw_requests.data_source_id
         join requests
           ON raw_requests.request_id  = requests.id
  WHERE  requests.request_time >= CAST(EXTRACT(epoch FROM NOW()) AS INT) - 86400
  GROUP  BY data_sources.id;

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[colmazia]

maybe add comments in the future