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TODO: see what other requests the default python and javascript client libraries use
## basics
- config: TOML, env, args
- filter requests by method and endpoint
- filter query parameters
- parse request bodies (queries)
- method/body for denied requests
- async streaming responses
- minimize tokio feature flags
factoring:
- validate query method (method, path, query, body)
## general endpoints
- ping
(?)
- basic info
GET /
(?)
- scroll
POST /_search/scroll
- clear scroll
DELETE /_search/scroll
## per-index endpoints
- basic info; mapping
(?)
- count
GET /<index>/_count
- get document
GET /<index>/_doc/<_id>
HEAD /<index>/_doc/<_id>
GET /<index>/_source/<_id>
HEAD /<index>/_source/<_id>
- search
GET /<index>/_search
POST /<index>/_search
later:
- multi-get (`_mget`)
- multi-search (`_msearch`)
## query types
compound:
- bool
- boosting
- constant_score
filter (query)
boost (float, optional)
fulltext:
- match
<field>
(bare str allowed)
query (str)
- match_phrase
<field>
(bare str allowed)
value (str)
- multi_match
- query_string
- simple_query_string
term-level:
- range
<field>
gt, gte, lt, lte: str or number
- term
<field>
value: str or number
- terms
<field>
(array of str or number)
- wildcard
<field>
value (str)
boost (float, optional)
rewrite (str, optional)
- exists
field (str)
- ids
values (array of str)
- match_all
boost (float, optional)
- match_none
boost (float, optional)
TODO:
- terms_set
- span queries
- fuzzy (configurable)
## additional stuff
- HTTP content-encoding: gzip
- content-type header; always JSON?
- https://www.elastic.co/guide/en/elasticsearch/reference/current/common-options.html
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