TrueCloudLab/frostfs-http-gw
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[#123] Add url-encoded queries for attributes

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Signed-off-by: Angira Kekteeva <kira@nspcc.ru>
This commit is contained in:
Angira Kekteeva 2022-01-24 17:04:34 +03:00 committed by Alex Vanin
parent c21217bc62
commit c11b2332f9
2 changed files with 16 additions and 2 deletions
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13
README.md
View file

@ -298,6 +298,9 @@ where
`$ATTRIBUTE_NAME` is the name of the attribute we want to use,
`$ATTRIBUTE_VALUE` is the value of this attribute that the target object should have.
**NB!** The attribute key and value must be url encoded, i.e., if you want to download an object with the attribute value
`a cat`, the value in the request must be `a+cat`. In the same way with the attribute key.
If multiple objects have specified attribute with specified value, then the
first one of them is returned (and you can't get others via this interface).
@ -306,6 +309,11 @@ Example for file name attribute:
```
$ wget http://localhost:8082/get_by_attribute/88GdaZFTcYJn1dqiSECss8kKPmmun6d6BfvC4zhwfLYM/FileName/cat.jpeg
```
Or when the filename includes special symbols:
```
$ wget http://localhost:8082/get_by_attribute/88GdaZFTcYJn1dqiSECss8kKPmmun6d6BfvC4zhwfLYM/FileName/cat+jpeg # means 'cat jpeg'
$ wget http://localhost:8082/get_by_attribute/88GdaZFTcYJn1dqiSECss8kKPmmun6d6BfvC4zhwfLYM/FileName/cat%25jpeg # means 'cat%jpeg'
```
Some other user-defined attribute:
@ -313,6 +321,11 @@ Some other user-defined attribute:
$ wget http://localhost:8082/get_by_attribute/Dxhf4PNprrJHWWTG5RGLdfLkJiSQ3AQqit1MSnEPRkDZ/Ololo/100500
```
Or when the attribute includes special symbols:
```
$ wget http://localhost:8082/get_by_attribute/Dxhf4PNprrJHWWTG5RGLdfLkJiSQ3AQqit1MSnEPRkDZ/Olo%2Blo/100500 # means Olo+lo
```
An optional `download=true` argument for `Content-Disposition` management is
also supported (more on that below):

5
downloader/download.go
View file

@ -7,6 +7,7 @@ import (
"fmt"
"io"
"net/http"
"net/url"
"path"
"strconv"
"strings"
@ -314,8 +315,8 @@ func (d *Downloader) byAttribute(c *fasthttp.RequestCtx, f func(request, pool.Ob
var (
httpStatus = fasthttp.StatusBadRequest
scid, _ = c.UserValue("cid").(string)
key, _ = c.UserValue("attr_key").(string)
val, _ = c.UserValue("attr_val").(string)
key, _ = url.QueryUnescape(c.UserValue("attr_key").(string))
val, _ = url.QueryUnescape(c.UserValue("attr_val").(string))
log = d.log.With(zap.String("cid", scid), zap.String("attr_key", key), zap.String("attr_val", val))
)
containerID := cid.New()