Missing inspectors for JARs (Maven)
Metadata
Current evaluation
JAR downloads from repo1.maven.org were not recognized. JAR handling was fixed by commit ea913b3 (#535), but Java-archive MIME and noncanonical Maven host support remain unresolved concerns.
Suggested action: close resolved
Reason: Commit ea913b3, “fix(i/maven): parse jar file regardless of url” (#535), directly addressed JAR handling. However, the current inspector still gates on application/jar and repo.maven.apache.org, while the report observed application/java-archive and repo1.maven.org; those remaining cases should be split into a follow-up rather than leaving this fixed report open.
Evaluated by: mr-cal-bot
Impact:
58
Quick Win:
26
Complexity:
38
Confidence:
88
Actionability:
72
Issue body
### Bug Description
From: https://launchpad.net/~vyomydv/fs-output-test/+charm/fs-output-test/+build/39002
```json
{
"artifact-metadata-version": "0.2",
"request-inspection": {
"default": {
"opinion": "Unknown",
"reason": "the request was not recognized by any format inspector"
}
},
"response-inspection": {
"default": {
"opinion": "Unknown",
"reason": "the artifact file content was not recognized by any format inspector"
}
},
"result": "Rejected",
"metadata": {
"type": "application/jar",
"sha1": "815818ad6ffcc8d320d8fbdf3d748c753cf83201",
"sha256": "d895e3eedf4fa1b10de31a91be55a301bb307bf18ef325b3fa5db3f80ee92d1c",
"size": 207763,
"name": "",
"version": "",
"vendor": "",
"description": "",
"author": "",
"license": ""
},
"downloads": [
{
"start-time": "2025-07-23T02:20:12.704653484Z",
"end-time": "2025-07-23T02:20:12.966622581Z",
"method": "GET",
"url": "https://repo1.maven.org:443/maven2/org/junit/jupiter/junit-jupiter-api/5.9.3/junit-jupiter-api-5.9.3.jar",
"address": "10.133.39.190:41820",
"user-agent": "Apache-Maven/3.6.3 (Java 21.0.7; Linux 6.8.0-63-generic)",
"request-header": {
"Accept-Encoding": [
"gzip,deflate"
],
"Cache-Control": [
"no-cache"
],
"Cache-Store": [
"no-store"
],
"Connection": [
"Keep-Alive"
],
"Pragma": [
"no-cache"
],
"User-Agent": [
"Apache-Maven/3.6.3 (Java 21.0.7; Linux 6.8.0-63-generic)"
]
},
"status-code": 200,
"status": "200 OK",
"content-type": "application/java-archive",
"response-header": {
"Accept-Ranges": [
"bytes"
],
"Age": [
"1852853"
],
"Connection": [
"keep-alive"
],
"Content-Length": [
"207763"
],
"Content-Type": [
"application/java-archive"
],
"Date": [
"Wed, 23 Jul 2025 02:20:12 GMT"
],
"Etag": [
"\"13eb9bfb15588e85c1fb76587f8f5d1e\""
],
"Last-Modified": [
"Wed, 26 Apr 2023 06:27:56 GMT"
],
"Via": [
"1.1 varnish, 1.1 varnish"
],
"X-Cache": [
"HIT, HIT"
],
"X-Cache-Hits": [
"36356, 0"
],
"X-Checksum-Md5": [
"13eb9bfb15588e85c1fb76587f8f5d1e"
],
"X-Checksum-Sha1": [
"815818ad6ffcc8d320d8fbdf3d748c753cf83201"
],
"X-Served-By": [
"cache-iad-kjyo7100072-IAD, cache-man4153-MAN"
],
"X-Timer": [
"S1753237213.851781,VS0,VE1"
]
}
}
]
},
```
No metadata and inspection failed for JARs. It downloads as a zip initially as far as I can see:
```json
{
"artifact-metadata-version": "0.2",
"request-inspection": {
"default": {
"opinion": "Unknown",
"reason": "the request was not recognized by any format inspector"
}
},
"response-inspection": {
"default": {
"opinion": "Unknown",
"reason": "the artifact file content was not recognized by any format inspector"
}
},
"result": "Rejected",
"metadata": {
"type": "application/zip",
"sha1": "5675fd96b29656504b86029551973d60fb41339b",
"sha256": "24bcaa20ccbdc7c856ce0c0aea144566943403e2e9f27bd9779cda1d76823ef4",
"size": 188671,
"name": "",
"version": "",
"vendor": "",
"description": "",
"author": "",
"license": ""
},
"downloads": [
{
"start-time": "2025-07-23T02:22:21.721388624Z",
"end-time": "2025-07-23T02:22:21.846557117Z",
"method": "GET",
"url": "https://repo1.maven.org:443/maven2/commons-beanutils/commons-beanutils/1.7.0/commons-beanutils-1.7.0.jar",
"address": "10.133.39.190:56812",
"user-agent": "Apache-Maven/3.6.3 (Java 21.0.7; Linux 6.8.0-63-generic)",
"request-header": {
"Accept-Encoding": [
"gzip,deflate"
],
"Cache-Control": [
"no-cache"
],
"Cache-Store": [
"no-store"
],
"Connection": [
"Keep-Alive"
],
"Pragma": [
"no-cache"
],
"User-Agent": [
"Apache-Maven/3.6.3 (Java 21.0.7; Linux 6.8.0-63-generic)"
]
},
"status-code": 200,
"status": "200 OK",
"content-type": "application/java-archive",
"response-header": {
"Accept-Ranges": [
"bytes"
],
"Age": [
"2544758"
],
"Connection": [
"keep-alive"
],
"Content-Length": [
"188671"
],
"Content-Type": [
"application/java-archive"
],
"Date": [
"Wed, 23 Jul 2025 02:22:21 GMT"
],
"Etag": [
"\"0f18acf5fa857f9959675e14d901a7ce\""
],
"Last-Modified": [
"Tue, 22 Nov 2005 18:08:47 GMT"
],
"Via": [
"1.1 varnish, 1.1 varnish"
],
"X-Cache": [
"HIT, HIT"
],
"X-Cache-Hits": [
"42002, 156"
],
"X-Checksum-Md5": [
"0f18acf5fa857f9959675e14d901a7ce"
],
"X-Checksum-Sha1": [
"5675fd96b29656504b86029551973d60fb41339b"
],
"X-Served-By": [
"cache-iad-kjyo7100083-IAD, cache-lcy-egml8630069-LCY"
],
"X-Timer": [
"S1753237342.805245,VS0,VE0"
]
}
}
]
},
```
Also there are other API requests to maven central that were not recognized by fetch service:
```json
{
"artifact-metadata-version": "0.2",
"request-inspection": {
"default": {
"opinion": "Unknown",
"reason": "the request was not recognized by any format inspector"
}
},
"response-inspection": {
"default": {
"opinion": "Unknown",
"reason": "the artifact file content was not recognized by any forma
}
},
"result": "Rejected",
"metadata": {
"type": "text/plain; charset=utf-8",
"sha1": "85c86f131f46c9e723540323e0c577f4fb5f52e6",
"sha256": "120f104e4a84d7c0cc606ffc754e824feebd5e0cf7970532f53ca052a7c70
"size": 40,
"name": "",
"version": "",
"vendor": "",
"description": "",
"author": "",
"license": ""
},
"downloads": [
{
"start-time": "2025-07-23T05:33:23.658689391Z",
"end-time": "2025-07-23T05:33:23.667535335Z",
"method": "GET",
"url": "https://repo1.maven.org:443/maven2/org/apache/maven/maven-mo
"address": "10.133.32.70:60268",
"user-agent": "Apache-Maven/3.6.3 (Java 21.0.7; Linux 6.8.0-63-gener
"request-header": {
"Accept-Encoding": [
"gzip,deflate"
],
"Cache-Control": [
"no-cache"
],
"Cache-Store": [
"no-store"
],
"Connection": [
"Keep-Alive"
],
"Pragma": [
"no-cache"
],
"User-Agent": [
"Apache-Maven/3.6.3 (Java 21.0.7; Linux 6.8.0-63-generic)"
]
},
"status-code": 200,
"status": "200 OK",
"content-type": "text/plain",
"response-header": {
"Accept-Ranges": [
"bytes"
],
"Age": [
"746270"
],
"Connection": [
"keep-alive"
],
"Content-Length": [
"40"
],
"Content-Type": [
"text/plain"
],
"Date": [
"Wed, 23 Jul 2025 05:33:23 GMT"
],
"Etag": [
"\"f9b9b5b3fe1c179bc7029efa4379703c\""
],
"Last-Modified": [
"Fri, 26 Jun 2009 13:00:46 GMT"
],
"Via": [
"1.1 varnish, 1.1 varnish"
],
"X-Cache": [
"HIT, HIT"
],
"X-Cache-Hits": [
"3240, 1"
],
"X-Checksum-Md5": [
"f9b9b5b3fe1c179bc7029efa4379703c"
],
"X-Checksum-Sha1": [
"85c86f131f46c9e723540323e0c577f4fb5f52e6"
],
"X-Served-By": [
"cache-iad-kjyo7100078-IAD, cache-lcy-egml8630088-LCY"
],
"X-Timer": [
"S1753248804.663513,VS0,VE1"
]
}
}
]
},
```
⚠️ Also for existing maven inspector I don't see their mimetype in `mimetypes.go`
### To Reproduce
https://launchpad.net/~vyomydv/fs-output-test/+charm/fs-output-test/+build/39002
### Relevant log output
```shell
N/A
```
Evaluation history
| Date | Model | Scores | Action | Summary |
|---|---|---|---|---|
| stealth/space-bunny-alpha |
Impact:
58
Quick Win:
26
Complexity:
38
Confidence:
88
Actionability:
72
|
close resolved | JAR downloads from repo1.maven.org were not recognized. JAR handling was fixed by commit ea913b3 (#535), but Java-archive MIME and noncanonical Maven host support remain unresolved concerns. | |
| stealth/space-bunny-alpha |
Impact:
58
Quick Win:
32
Complexity:
32
Confidence:
93
Actionability:
80
|
keep open | Maven JAR support remains incomplete: the merged inspector only accepts application/jar from repo.maven.apache.org, while reported JARs use application/java-archive from repo1.maven.org and remain Unknown/Rejected. | |
| qwen/qwen3.6-35b-a3b |
Impact:
60
Quick Win:
36
Staleness:
75
Complexity:
40
Confidence:
70
Support Request:
10
|
close stale | Missing inspectors for JARs (Maven) causing artifact inspection failures; PR #180 merged a JAR inspector but mimetype application/java-archive remains missing from mimetypes.go |
Update history
| Date | Change |
|---|---|
| created |
Related work
-
Likely Fixed By:
fetch-service#535
(confidence 94%)
The commit is explicitly titled “fix(i/maven): parse jar file regardless of url” and modifies inspectors/maven/jar.go.
Related issues
No related issues found above the similarity threshold.