如何在elasticsearch无痛脚本中取消更新

发布于 2025-01-09 15:03:00 字数 1104 浏览 2 评论 0原文

在尝试使用纯elasticsearch-painless切换PHP代码时，我注意到即使文档在更新前后相同，文档也不会返回“noop”。

我不确定每次执行代码时更新版本是否会产生任何后果？它如何扩展？

如果在 views_log 中找不到身份，我只是尝试在访问期间更新帖子的 views，并且想知道是否有办法修复“ noop”返回，或者以某种方式取消更新？

我现在的代码如下所示：

$script = 'if (!ctx._source.views_log.contains(params.identity)) {
             ctx._source.views_log.add(params.identity);
             ctx._source.views += 1;
           }';

$params = [
    'index' => 'post',
    'id'    => 4861,
    'body'  => [
        'script' => [
            'source' => $script,
            'lang' => "painless",
            'params' => [
                'identity' => $identifier
            ]
        ]
    ]
];

$response = $client->update($params);

遵循 elasticsearch 的文档：

ctx['op']：使用默认的索引来更新文档。设置为none表示不进行任何操作，设置为delete则从索引中删除当前文档。

如果不满足条件，我尝试将 ctx.op 设置为 none，但这似乎不起作用。

原文

While working on trying to switch out PHP code with pure elasticsearch-painless, I noticed that the document doesn't return "noop" even if the document is identical before and after update.

I'm not sure if there is any consequences of having a version update for every time the code is executed? How does it scale?

I'm simply trying to update the views of a post during visit if the identity was not found in views_log, and was wondering either if there is a way to fix the "noop" return, or somehow have it cancel the update?

The code I have right now looks like this:

$script = 'if (!ctx._source.views_log.contains(params.identity)) {
             ctx._source.views_log.add(params.identity);
             ctx._source.views += 1;
           }';

$params = [
    'index' => 'post',
    'id'    => 4861,
    'body'  => [
        'script' => [
            'source' => $script,
            'lang' => "painless",
            'params' => [
                'identity' => $identifier
            ]
        ]
    ]
];

$response = $client->update($params);

Following elasticsearch's documentation:

ctx['op']:
Use the default of index to update a document. Set to none to specify no operation or delete to delete the current document from the index.

I tried setting ctx.op to none if the condition is not met, but that didn't seem to work.

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咋地 2025-01-16 15:03:00

在写这个问题的过程中我想到了，不妨与其他人分享。

none 是 ctx.op 接受的关键字，它接受一个字符串。将无更改为“无”。

因此，完整的脚本应如下所示：

$script = 'if (!ctx._source.views_log.contains(params.identity)) {
             ctx._source.views_log.add(params.identity);
             ctx._source.views += 1;
           } else {
             ctx.op = "none";
           }';

$params = [
    'index' => 'post',
    'id'    => 4861,
    'body'  => [
        'script' => [
            'source' => $script,
            'lang' => "painless",
            'params' => [
                'identity' => $identifier
            ]
        ]
    ]
];

$response = $client->update($params);

这将给出所需的 "result": "noop"

During writing of this question I figured it out, and might as well share with others.

none is an accepted keyword for ctx.op, it accepts a string. Change none to "none".

So the full script should look like this:

$script = 'if (!ctx._source.views_log.contains(params.identity)) {
             ctx._source.views_log.add(params.identity);
             ctx._source.views += 1;
           } else {
             ctx.op = "none";
           }';

$params = [
    'index' => 'post',
    'id'    => 4861,
    'body'  => [
        'script' => [
            'source' => $script,
            'lang' => "painless",
            'params' => [
                'identity' => $identifier
            ]
        ]
    ]
];

$response = $client->update($params);

This will give the desired "result": "noop"

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