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Subject [GitHub] [incubator-zipkin] jorgheymans commented on issue #2572: trim whitespace from the annotation query elements
Date Thu, 09 May 2019 06:45:06 GMT
jorgheymans commented on issue #2572: trim whitespace from the annotation query elements
URL: https://github.com/apache/incubator-zipkin/pull/2572#issuecomment-490765427
 
 
   The query string is parsed into a map keyed with the annotation keys. So in
   fact the last one specified in the query wins, even though it can be the
   least specific one. An easy fix would be to only overwrite keys in the map
   in case of a tag parameter and drop annotation parameters if a tag value is
   present already. WDYT?
   
   Op do 9 mei 2019 02:20 schreef Adrian Cole <notifications@github.com>:
   
   > *@adriancole* commented on this pull request.
   > ------------------------------
   >
   > In zipkin/src/test/java/zipkin2/storage/QueryRequestTest.java
   > <https://github.com/apache/incubator-zipkin/pull/2572#discussion_r282301553>
   > :
   >
   > > +    // spaces in http.path mixed with 'and'
   > +    assertThat(queryBuilder.parseAnnotationQuery("fo and o and bar and http.path
= /a ").annotationQuery)
   > +      .containsOnly(entry("fo", ""), entry("o", ""), entry("bar", ""), entry("http.path",
"/a"));
   > +    // http.path in the beginning, more spaces
   > +    assertThat(queryBuilder.parseAnnotationQuery(" http.path = /a   and fo and o
  and bar").annotationQuery)
   > +      .containsOnly(entry("fo", ""), entry("o", ""), entry("bar", ""), entry("http.path",
"/a"));
   > +    // @adriancole said this would be hard to parse, annotation containing spaces
   > +    assertThat(queryBuilder.parseAnnotationQuery("L O L").annotationQuery)
   > +      .containsOnly(entry("L O L", ""));
   > +    // annotation with spaces combined with tag
   > +    assertThat(queryBuilder.parseAnnotationQuery("L O L and http.path = /a").annotationQuery)
   > +      .containsOnly(entry("L O L", ""), entry("http.path", "/a"));
   > +    assertThat(queryBuilder.parseAnnotationQuery("bar =123 and L O L and http.path
= /a and A B C").annotationQuery)
   > +      .containsOnly(entry("L O L", ""), entry("http.path", "/a"), entry("bar", "123"),
entry("A B C", ""));
   > +    // border case, L O L as a tag and annotation, seems that the annotation takes
precedence
   > +    assertThat(queryBuilder.parseAnnotationQuery("L O L=123 and L O L and http.path
= /a").annotationQuery)
   >
   > the backend will do a redundant query. Technically, the most specific
   > would win based on the query rules.
   >
   > —
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   > <https://github.com/apache/incubator-zipkin/pull/2572#discussion_r282301553>,
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   > .
   >
   

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