apoc.log.stream
过程Cypher 5 中已弃用Cypher 25 中已移除

在 APOC 2025.06 版本中，此过程已被迁移至不受支持的 APOC Extended 库。这意味着如果您使用的是 APOC 2025.06 或更高版本，该过程在 Cypher 25 中将不可用，但仍可在 Cypher 5 中使用。有关更多信息，请参阅 APOC 和 Cypher 版本。

详细信息
语法	`apoc.log.stream(path [, config ]) :: (lineNo, line, path)`
描述	返回给定日志文件的内容，可选择仅返回最后 n 行。此过程要求用户具有管理员角色。
输入参数	名称	类型	描述
	`path`	`STRING`	要读取的日志文件名称。
	`config`	`MAP`	`{ last :: INTEGER }`。默认值为：`{}`。
返回参数	名称	类型	描述
	`行号`	`INTEGER（整数）`	行号。
	`行内容 (line)`	`STRING`	该行的内容。
	`path`	`STRING`	日志文件的路径。

使用示例

要使用 apoc.log.stream 过程，用户必须拥有 admin 角色，否则该过程将抛出错误 permission has not been granted for user 'xxx'。这是为了确保只有管理员能够访问可能包含敏感数据的日志。

以下示例返回 neo4j.log 中的最后 10 行：

CALL apoc.log.stream("neo4j.log", {last: 10});

结果
行号	行内容 (line)	path
12827	"2020-11-16 11:12:10.197+0000 WARN The client is unauthorized due to authentication failure."	"/home/markhneedham/.local/share/neo4j-relate/dbmss/dbms-8c3607ed-fe8d-42de-9be9-075d86babcfe/logs/neo4j.log"
12826	"2020-11-16 11:12:09.967+0000 WARN The client is unauthorized due to authentication failure."	"/home/markhneedham/.local/share/neo4j-relate/dbmss/dbms-8c3607ed-fe8d-42de-9be9-075d86babcfe/logs/neo4j.log"
12825	"2020-11-16 09:43:39.332+0000 INFO Called db.clearQueryCaches(): Query cache already empty."	"/home/markhneedham/.local/share/neo4j-relate/dbmss/dbms-8c3607ed-fe8d-42de-9be9-075d86babcfe/logs/neo4j.log"
12824	"2020-11-12 16:18:44.392+0000 INFO LabelPropagationStreamProc: overall memory usage 27 KiB"	"/home/markhneedham/.local/share/neo4j-relate/dbmss/dbms-8c3607ed-fe8d-42de-9be9-075d86babcfe/logs/neo4j.log"
12823	"2020-11-12 16:18:44.391+0000 INFO [neo4j.BoltWorker-5 [bolt] [/127.0.0.1:51704] ] LabelPropagation :: Finished"	"/home/markhneedham/.local/share/neo4j-relate/dbmss/dbms-8c3607ed-fe8d-42de-9be9-075d86babcfe/logs/neo4j.log"
12822	"2020-11-12 16:18:44.391+0000 INFO [gds-3] LabelPropagation 99%"	"/home/markhneedham/.local/share/neo4j-relate/dbmss/dbms-8c3607ed-fe8d-42de-9be9-075d86babcfe/logs/neo4j.log"
12821	"2020-11-12 16:18:44.391+0000 INFO [gds-3] LabelPropagation 98%"	"/home/markhneedham/.local/share/neo4j-relate/dbmss/dbms-8c3607ed-fe8d-42de-9be9-075d86babcfe/logs/neo4j.log"
12820	"2020-11-12 16:18:44.391+0000 INFO [gds-3] LabelPropagation 97%"	"/home/markhneedham/.local/share/neo4j-relate/dbmss/dbms-8c3607ed-fe8d-42de-9be9-075d86babcfe/logs/neo4j.log"
12819	"2020-11-12 16:18:44.391+0000 INFO [gds-3] LabelPropagation 96%"	"/home/markhneedham/.local/share/neo4j-relate/dbmss/dbms-8c3607ed-fe8d-42de-9be9-075d86babcfe/logs/neo4j.log"
12818	"2020-11-12 16:18:44.391+0000 INFO [gds-3] LabelPropagation 95%"	"/home/markhneedham/.local/share/neo4j-relate/dbmss/dbms-8c3607ed-fe8d-42de-9be9-075d86babcfe/logs/neo4j.log"