如何通过 Google App Engine 批量加载程序使用 key_name 上传数据
我可以上传数据,但 key_name 为空。 如何使用 CSV 中的“id”作为数据存储上的 key_name?
我喜欢使用“id”作为 key_name,因为其他数据使用“id”作为外键。 我是 Google App Engine 的新手。
这是 CSV 数据。
"id","name"
"1","USA"
"2","France"
"3","Italy"
这是 YAML
- model: model.testcountry.TestCountry
connector: csv
connector_options:
encoding: utf-8
columns: from_header
property_map:
- property: __key__
external_name: id
- property: name
external_name: name
PS:我正在尝试将数据上传到本地环境。
更新
感谢您的帮助,我尝试了代码,但效果不佳。 结果很奇怪。
在终端窗口中,日志消息告诉我上传已成功完成, 但是我在 Google App Engine 控制台 (http://localhost:8080/_ah/admin/datastore) 中找不到任何记录。数据存储为空,没有记录。
终端窗口中的日志消息是这个
输入命令
appcfg.py upload_data --config_file=bulkloader.yaml --filename=testcountries.csv --kind=TestCountry --url=http://localhost:8080/remote_api --num_thread=1
结果消息
Uploading data records.
[INFO ] Logging to bulkloader/log.log
[INFO ] Throttling transfers:
[INFO ] Bandwidth: 250000 bytes/second
[INFO ] HTTP connections: 8/second
[INFO ] Entities inserted/fetched/modified: 20/second
[INFO ] Batch Size: 10
Please enter login credentials for localhost:8080
Email: xxxxxxx
Password for l:
[INFO ] Opening database: bulkloader-progress-20110609.003032.sql3
[INFO ] Connecting to localhost:8080/remote_api
[INFO ] Starting import; maximum 10 entities per post
..........
[INFO ] 100 entities total, 0 previously transferred
[INFO ] 100 entities (3362 bytes) transferred in 1.9 seconds
[INFO ] All entities successfully transferred
我也尝试过这个,但结果是相同的。终端显示成功,但在 Google App Engine 控制台中没有记录...
import_transform: int
PS:我使用的是 Mac OS X Snow Leopard 和 Google App Engine 启动器。
I can upload data, but key_name is empty.
How can I use the 'id' in the CSV as the key_name on datastore?
I'like to use 'id' as the key_name, because other data uses the 'id' as the foreign key.
I'm new to Google App Engine.
This is the CSV data.
"id","name"
"1","USA"
"2","France"
"3","Italy"
This is the YAML
- model: model.testcountry.TestCountry
connector: csv
connector_options:
encoding: utf-8
columns: from_header
property_map:
- property: __key__
external_name: id
- property: name
external_name: name
P.S: I'm trying upload data to the local enviroment.
Update
Thank you for the help, I tried the code, but it does not work well.
The result is strange.
In the terminal window a log message tells me that uploading finished successfully,
however I cannot find any records in the Google App Engine console (http://localhost:8080/_ah/admin/datastore). The datastore is empty, there is no record.
The log message in the terminal window is this
Entering command
appcfg.py upload_data --config_file=bulkloader.yaml --filename=testcountries.csv --kind=TestCountry --url=http://localhost:8080/remote_api --num_thread=1
Result message
Uploading data records.
[INFO ] Logging to bulkloader/log.log
[INFO ] Throttling transfers:
[INFO ] Bandwidth: 250000 bytes/second
[INFO ] HTTP connections: 8/second
[INFO ] Entities inserted/fetched/modified: 20/second
[INFO ] Batch Size: 10
Please enter login credentials for localhost:8080
Email: xxxxxxx
Password for l:
[INFO ] Opening database: bulkloader-progress-20110609.003032.sql3
[INFO ] Connecting to localhost:8080/remote_api
[INFO ] Starting import; maximum 10 entities per post
..........
[INFO ] 100 entities total, 0 previously transferred
[INFO ] 100 entities (3362 bytes) transferred in 1.9 seconds
[INFO ] All entities successfully transferred
I also tried this, but result was same. The terminal says success but in the Google App Engine console there are no records....
import_transform: int
PS: I'm using Mac OS X Snow Leopard and Google App Engine launcher.
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试试这个:
Try this: