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diepm

Description

A REST console for Vim.

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Vim REST Console (VRC)

1. Introduction

VRC is a Vim plug-in to help send requests to and display responses from RESTful services in Vim. It's useful for working with REST services that use JSON to exchange information between server and client such as ElasticSearch.

VRC can also be used as a cURL client for simple needs such as getting a HTTP page response or posting to a form.

Requirements:

  • cURL
  • Vim 7.4 (might work with the older Vim versions)

2. Features

  • Execute REST request and display the response on a separate display buffer.
  • Make changing/adjusting request body easy.
  • Can have multiple REST request blocks per VRC buffer.
  • Can have multiple VRC buffers where they all share the same output buffer or each can have its own output buffer.
  • Particularly useful for working with REST services that require the request body to be sent in JSON such as ElasticSearch.
  • Syntax highlighting.
  • Supported verbs: GET, POST, PUT, HEAD, PATCH, OPTIONS, and TRACE.

3. Installation

VRC requires cURL. It's tested with Vim 7.4 but might work with the older versions.

To install using pathogen.vim

cd ~/.vim/bundle
git clone https://github.com/diepm/vim-rest-console.git

To install using Vundle

" Add this line to .vimrc
Plugin 'diepm/vim-rest-console'

Other methods should work as well.

4. Examples

For more examples, check out

https://raw.githubusercontent.com/diepm/vim-rest-console/master/sample.rest

there is also an alternative version using global settings:

https://raw.githubusercontent.com/diepm/vim-rest-console/master/sample_global.rest

The following examples assume that an ElasticSearch service is running at localhost. The pipe (

|
) indicates the current position of the cursor.

4.1 Single VRC Buffer

  • From the command line, run a new Vim instance.
  • Set the buffer
    filetype
    to
    rest
    by
  :set ft=rest
  • Type in
  http://localhost:9200
  GET /_cat/nodes?v|
  • Hit the trigger key (
     by default).
  • A new vertically split buffer will be shown to display the output.
  • Change the request block to (or add another one)
  http://localhost:9200
  POST /testindex/testtype
  {
    "key": "new key",
    "value": "new value"|
  }
  • Hit the trigger key with the cursor placed anywhere within this request block.
  • The display buffer will be updated with the new response.

4.2 Multiple VRC Buffers

This example continues the previous one.

  • Open a new VRC buffer in a new tab
  :tabe NewVrc.rest
  • Since the new buffer has the extension
    rest
    , the VRC plug-in is active for this one.
  • Set
    b:vrc_output_buffer_name
    of this buffer to
    __NEW_VRC__
  :let b:vrc_output_buffer_name = '__NEW_VRC__'
  • Type in a request block such as
  http://localhost:9200
  GET /testindex/_search?pretty|
  • Hit the trigger key.
  • A new display buffer will be created showing the response.
  • Go back to the VRC buffer of the previous example (previous tab).
  • Try to execute an existing request block.
  • The corresponding display buffer will be updated.

5. Usage

This plug-in is activated when Vim opens a buffer of type

rest
. This may be a file with the extension
.rest
or a buffer with
filetype
explicitly set to
rest
by
:set ft=rest

A VRC buffer can have one or many REST request blocks. A request block contains a host, optional cUrl options, optional headers, query, and an optional request body (usually used by POST). A block is defined as follows.

# host
http[s]://domain[:port]

[optional cUrl options]

[optional headers]

query

POST /path/to/resource [optional request body]

A comment starts with

#
or
//
and must be on its own line. The following is an example of a VRC buffer with multiple request blocks.
# GETting from resource.
http://example.com
GET /path/to/resource?key=value

POSTing to an ElasticSearch service.

http://example.com/elasticsearch

// Specify optional headers. Content-Type: application/json; charset=utf-8

POST /index/type?pretty { "key": "a key", "value": "a value" }

Submitting a form.

https://example.net:8080

Accept: / Authorization: Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ== Cache-Control: no-cache Connection: keep-alive Content-Type: application/x-www-form-urlencoded Cookie: userId=ac32:dfbe:8f1a:249c; sid=cfb48e3d98fcb1 User-Agent: VRC

POST /form var1=value of var1& var2=value of var2

When the trigger key is called (

 by default), VRC processes the request
block that the cursor stays within. The response is displayed in a new
vertically split buffer. This output buffer is reused if it's already present.

By default, the display/output buffer is named

__REST_response__
. If there are multiple VRC buffers, they all share the same display buffer. To have a separate output display for each VRC buffer,
b:vrc_output_buffer_name
can be set in the buffer scope.

5.1 cUrl Options

A recent addition to VRC is the ability to specify cUrl options. These may be specified by the VRC option

vrc_curl_opts
or declaring in the global section of a REST buffer and request blocks.

All specified cUrl options are merged together when a cUrl command is built. For the same keys (cUrl switch) specified at different scopes, the ones of the request blocks overwrite the ones in the global section then overwrite the ones defined by

vrc_curl_opts
.

For the deprecated VRC options, they can be replaced by cUrl options. For example, assuming they have been defined as follows.

let g:vrc_connect_timeout = 10
let g:vrc_cookie_jar = '/path/to/cookie'
let g:vrc_follow_redirects = 1
let g:vrc_include_response_header = 1
let g:vrc_max_time = 60
let g:vrc_resolve_to_ipv4 = 1
let g:vrc_ssl_secure = 1

Using cUrl options,

let g:vrc_curl_opts = {
  \ '--connect-timeout' : 10,
  \ '-b': '/path/to/cookie',
  \ '-c': '/path/to/cookie',
  \ '-L': '',
  \ '-i': '',
  \ '--max-time': 60,
  \ '--ipv4': '',
  \ '-k': '',
\}

5.2 Global Definitions

The global section is separated from the rest with two dashes

--
and may include a default host, optional default cUrl options (buffer scope) and optional default headers. These values are always included in each request.

Each request block has to start with either two dashes indicating it uses the default host from the global section or any host only used by this block. If a 'local host' is given, it's used instead of the one specified in the global section. Additionally, a request block can specify extra cUrl options and headers. Local headers are merged with and overwrite global headers.

# Global definitions.
// Default host.
https://domain[:port]/...

// Default (buffer scope) cUrl options. -L --connect-timeout 10

// Default headers. Accept: application/json X-Header: Custom Data --

Request block that uses default values from the global section.

-- GET /some/query

Request block that specifies its own host and extra headers.

// Local host. http://example.net:9200

// Local cUrl opts. -k --ipv4 // This cUrl option overwrites the one in the global section. --connect-timeout 30 -b /path/to/cookie -c /path/to/cookie

// Extra headers. Xtra-Header: Some Extra. // This header will overwrite the one in the global section. X-Header: New Data

POST /service var1=value

5.3 Global Variable Declaration

VRC now supports variable declarations in the global scope. These variables then can be used in the query paths, headers, and the body. Notice: values are not url-encoded. Variables can contain static text, or reference an environment variable:

# Global scope.
http://host

// Variable declarations (value passed as is). foobar = LoremIpsum city = Some%20City zip = 12345 population = 42 restpassword = $SECRET_ENV_VAR --

End global scope.

-- GET /city/:city

-- GET /city/:city/zip/:zip

-- custom-header :foobar POST /city/:city { "population": :population }

5.4 Line-by-line Request Body

Since version 2.3.0, the request body can be specified on a line-by-line basis. It's useful for name-value pair services. Each line of the request body is passed to cURL using

--data
or
--data-urlencode
depending on the verb.

To enable,

let g:vrc_split_request_body = 1

or

let b:vrc_split_request_body = 1

Then the request body can be specified as

#
# The following params in the request body will be
# sent using `--data-urlencode`
#
http://localhost
Content-Type: text/html; charset=UTF-8
GET /service
var1=value1
var2=value2

This option won't take effect for

GET
request if the option
vrc_allow_get_request_body
is set.

5.4 Consecutive Request Verbs

A request block may have consecutive request verbs. The output of each request verb is appended to the output view.

http://localhost:9200
PUT /test
GET /test
DELETE /test

6. Configuration

https://github.com/diepm/vim-rest-console/blob/master/doc/vim-rest-console.txt

7. Tips 'n Tricks

7.1 POST Data in Bulk

Since v3.0, VRC supports POSTing data in bulk using in-line data or an external data file. It's helpful for such APIs as Elasticsearch's Bulk API.

To use in-line data, first enable the Elasticsearch support flag.

let g:vrc_elasticsearch_support = 1

The request would look like this.

http://localhost:9200
POST /testindex/_bulk
{ "index": { "_index": "test", "_type": "product" } }
{ "sku": "SKU1", "name": "Product name 1" }
{ "index": { "_index": "test", "_type": "product" } }
{ "sku": "SKU2", "name": "Product name 2" }

Using external data files doesn't need the support flag.

http://localhost:9200
POST /testindex/_bulk
@data.sample.json

You can also PUT contents of a file using the same syntax. This is equivalent to passing --data-binary flag to cURL.

http://localhost:9200
PUT /testindex/_bulk
@data.sample.json

7.2 Syntax Highlighting

Though VRC supports output syntax highlighting, it's based on the response Content-Type. When Content-Type is not present, the output can still be syntax-highlighted if the appropriate ftplugin is installed. To force the output highlighting based on

filetype
, place this setting in
.vimrc
:
let g:vrc_output_buffer_name = '__VRC_OUTPUT.'

filetype
can also be set in the output buffer on an ad hoc basis.
# vim: set ft=json

8. Contributors

Thanks to the contributors (in alphabetical order of GitHub account)

@dan-silva
@dflupu
@iamFIREcracker
@jojoyuji
@korin
@minhajuddin
@mjakl
@nathanaelkane
@p1otr
@rawaludin
@rlisowski
@sethtrain
@shanesmith
@tdroxler
@tonyskn
@torbjornvatn

9. License

MIT

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