Reduce the amount of logging from org.apache.http bundles.

[rgrunber]

• Some extensions to JDT-LS may introduce 'org.apache.http' bundles which logs excessively with messages of no real value
• When jdt.ls.debug=true is passed as a system property, DEBUG logging is enabled at the root logger

In order to reproduce, let's take the vscode-java client and be sure to set java.jdt.ls.vmargs to include the system property -Djdt.ls.debug=true. Also make sure to install https://github.com/testforstephen/vscode-pde which should contain the bundle that will initiate this behaviour. Simply open eclipse.jdt.ls in the editor.

When monitoring the contents of $HOME/.config/Code/User/workspaceStorage/${jdt-ls-workspace-id}/redhat.java/jdt_ws/.metadata/ you should be able to see as part of the import something like :

total 9.9M
 4.0K .
 4.0K ..
1004K .bak_0.log
1004K .bak_1.log
1004K .bak_2.log
1004K .bak_3.log
1004K .bak_4.log
1008K .bak_5.log
1004K .bak_6.log
1004K .bak_7.log
1004K .bak_8.log
1004K .bak_9.log
    0 .error-jdt.ls-20230124154315.log
 4.0K .log
    0 .out-jdt.ls-20230124154315.log
 4.0K .plugins

If you watch the timestamps of those backup files, you'll see that they're constantly updated, because they're being overwritten every second (10 log files is the maximum set after which data rolls back to the start). The amount of logging is excessive enough to slow down the import process. Using iostat, I estimated at least 500MB of data, were written out similar to :

!ENTRY org.eclipse.jdt.ls.logback.appender 1 0 2023-01-20 16:13:19.915
!MESSAGE http-outgoing-272 << "][0xffffffb8][0xffffffe7][0xffffff85]I[0x0][0xffffffcf][0xffffffd1]n[0x1c]g9wm\[0x6][0xffffffef][0xffffffd0][0xffffff93][0x15]v[0xffffffb0]f[0xffffffba][0xffffffcc][0xffffff95][0x19][0xffffffe0][0x1e]Z[0x18][0x19]Ac[0xffffff9b]T[0x1e]kZ[0xffffffc1]kv[0xffffff90]B[0xfffffff0]%[0xffffffbf]A[0xffffff89][0x1]H'[0xffffffe5]upn[0xffffff93][0xffffffb7]Lq[[0xffffffeb][0xffffffbf]N[0xffffffcd][0xb]1[0xffffffe5][0xffffffc2].[0xffffffc3][0xffffff84][0x7]^c[0xffffffe0][0xfffffff3][0x17][0xffffff81][0x9]tl[0xfffffffa][0x8][0xffffffed][0xffffffd7][0xffffffa1]g[0x3][0xffffffa7][0xffffff9e]A[0x2][0xffffffd9]b-y[0xfffffffb][0xfffffff6][0xffffffad][0xffffffef]6[0xfffffff6]_l[0xfffffff8]l`[0xe][0xffffffce]Je[0xfffffffa]r%[0xffffffc6]go[0xfffffff6][0xffffffeb][0xffffffaa]M<f*[0xfffffffd][0xffffffad][0xffffffef]N[0xffffffd2]W[0xe][0xffffff8d]yg[0xffffffa2][0xffffffc2][0x1c][0xffffffc5][0xfffffff1][0xffffff9b]F[0x16][0xc]o&&[0xffffff83]0?[0x6]L[0x11],KJ[0xfffffff2][0x10]Z3w[0xffffff98][0xffffffa2][0xffffffb4][0x4][0xffffffc1][0xffffffd9]]{Y[\r][0xffffff93]9[0x1b][0x4]o[0xfffffff7][0xffffff8f][0xffffff83]7#[0xffffffcc]0d[0xffffff8b][0xffffffa5][0xfffffff1]H-[0xffffffc5]qnc$[0xffffff90][0x7f]v[0xffffffee][0xffffff9f][0x1e][0x12]i[0x8]h[0xffffffed][0xfffffff7]:w[0x7][0xffffff80][0xffffff98][0x17]/[0x7]a[0xfffffffe][0xffffff9d]p[0xffffffbe][0xffffffdf]I[0xffffff99][0xfffffffb][0xffffffda][0xfffffff9][0x1e]e[0xffffff8e][0xffffffd4][0xffffffdc]Y6[0x1][0xffffffbb][0xffffff99][0xffffffc1][0xffffffd6][0xffffff86]R@[0xfffffffa][0xfffffff9]K[0xffffff8b][0x1][0x1e][0xffffffd1][0xffffffab][0xffffff90][0xffffffa8]S[\r][0xffffffab][0xffffffa4][0xfffffff6]_[0xffffff87][0x19][0xffffff84][0xffffff92]=[0xffffffd0][0xffffff83][0xffffff85][0xffffffbe]'[0xffffff94][0xffffff9f][0xfffffff9][0x10][0xffffff9f][0xffffffbc][0xf][0xffffffca][0x9][0xe]O[0xffffffca][0xffffffbf][0x1e][0xfffffffd][0x1f]PK[0x7][0x8]<(.[0xffffffc4][0xfffffff4][\n]"

This PR should fix this. Although the bundle originates from vscode-pde, it's easier to include the code here than it is to suggest that vscode-pde add their own logback configuration bundle.

Signed-off-by: Roland Grunberg rgrunber@redhat.com

[jdneo]

LGTM.

The bug can be reproduced after setting -Djdt.ls.debug=true and then trigger reload target platform. And it's fixed after applying the patch.

[jdneo]

// cc @testforstephen

[rgrunber]

Thought I'd CC @sbouchet as he dealt with a similar case in a different stack. Basically this is a problem only when vscode-pde is installed, as it contributes the org.apache.httpcomponents.client5.httpclient5 bundle into the JDT-LS runtime. The problem is, in order to properly suppress it in vscode-pde, they'd have to create a custom configurator, which would mean a separate bundle, much like we do with https://github.com/eclipse/eclipse.jdt.ls/tree/master/org.eclipse.jdt.ls.logback.appender. This is just a fragment host of ch.qos.logback.classic, so that the framework can pick up https://github.com/eclipse/eclipse.jdt.ls/blob/8c334d898eaff15d75ac939c8e53a251c5440254/org.eclipse.jdt.ls.logback.appender/src/META-INF/services/ch.qos.logback.classic.spi.Configurator#L1 .

We used to have the logback configuration bundle back in 9f116c2 but opted for our own when we bumped to M2E 2.x. Also org.eclipse.m2e.logback.configurator got merged into org.eclipse.m2e.logback.appender in 4df09e69ba221bf7db7dceeac9e5ed666dfb5606 (2.1.x) so may need to keep track of where it goes down the road if you heavily depend on it.