footrest

footrest - A REST API server from Go sql.DB

go install

go install github.com/shu-go/footrest@latest

or, go get to customize

go get github.com/shu-go/footrest

Start from SQLite

Generate a config file

footrest gen

The command generates footrest.config.

Edit the config file

In this case, you use sqlite, test.db.

{
  "Format": {
    "QueryOK": "{\"result\": [%]}",
    "ExecOK": "{\"result\": %}",
    "Error": "{\"error\": %}"
  },
  "Params": {
    "Select": "select",
    "Where": "where",
    "Order": "order",
    "Rows": "rows",
    "Page": "page"
  },
  "Timeout": 5000,         <-- ms, you should edit
  "Addr": ":12345",        <-- host:port, you should edit
  "Root": "/",             <-- you should edit
  "DBType": "sqlite",      <-- driverName in sql.Open, you MUST edit
  "Connection": "test.db", <-- dataSourceName in sql.Open, you MUST edit
  "ShiftJIS": false,       <-- you should edit
  "Debug": false
}

Prepare test.db

Create test.db with your favorite tool.

You will use a table "table1" ("ID" INTEGER, "Text1" TEXT) with some records in it.

Run

footrest

URI

http://{config.addr}{config.root}/{object_in_the_rdbms}

REST (GET)

Now, go to http://localhost:12345/table1.

All records in the table table1 are output as JSON form.

REST (GET with query params)

GET requests accepts some parameters.

The column conditions form is {column_name}={operator}{arg}.

ID > 1

http://localhost:12345/table1?id=>1

• operator: >
• arg: 1

ID >= 1

http://localhost:12345/table1?id=>=1

• operator: >=
• arg: 1

ID != 1

http://localhost:12345/table1?id=!1

• operator: !
• arg: 1

Text1 like aaa%

http://localhost:12345/table1?text1=%25aaa%25

• operator: %25
• arg: aaa%25

ID = 1

http://localhost:12345/table1?id=1

• operator: = if omitted
• arg: 1

REST (GET with special where query param)

You use S-expr to describe conditions.

(ID >= 2) AND (Text1 LIKE 'aaa%')

http://localhost:12345/table1?where=(and (>= .id 2) (like .text1 aaa%25))

Refer to source file dialect.go to see what operators are defined.

NOTE: COLUMN NAME IS DESCRIBED AS .{COLUMN_NAME}.

REST (GET with special order query param)

Pass order a comma separated list.

ORDER BY Text1, ID DESC

http://localhost:12345/table1?order=text1,-id

REST (GET with special select query param)

Pass select a comma separated list.

SELECT ID

http://localhost:12345/table1?select=id

REST (GET paginated with special rows and page query params)

Both rows and page are required to paginated.

http://localhost:12345/table1?rows=50&page=1

REST (POST)

No query params.

Pass JSON in a request body.

REST (PUT)

Query params:

• column conditions
• special where query param
• special upsert query param
  • upsert=1

Pass JSON to update in a request body.

REST (DELETE)

Query params:

• column conditions
• special where query param

REST (buik)

Post JSON array of Objects to /!bulk.

POST http://localhost:12345/!bulk HTTP/1.1
content-type: application/json

[
  {
    "method": "DELETE",
    "table": "Table1",
    "where": {"Col1": "'123'", "Col2": ">=100"}
  },
  {
    "method": "POST",
    "table": "Table1",
    "values": {"Col3": "12345", "Col4": 23456}
  },
  {
    "method": "PUT",
    "table": "Table1",
    "where": {"Col1": "'123'", "Col2": ">=100"},
    "values": {"Col3": "23456", "Col4": 34567}
  }
]

Methods:

• POST
• PUT
• UPSERT
• DELETE

It is designed to be customized.

Adding a supported DBMSes

• Copy a file dialect/sqlite/sqlite.go and customize.
• Edit a file cmd/footrest/main.go
  • Import the dialect and driver.

Remarks

Security

No security verifications.

Do not use this package for public or commercial purposes or in any other situation where security is required.

DBMS

This package depends on Rows.ColumnTypes() returns appropriate result.