我需要向每个发出的boto3请求添加一些自定义标头。有没有办法管理连接本身来添加这些标头？
对于boto2，connection.AWSAuthConnection具有一个build_base_http_request方法，该方法很有帮助。我还没有在boto3文档中找到类似的功能。
sunjianfeng1 回答：向所有boto3请求添加自定义标头
这已经过时了，但我们遇到了同样的问题，所以我发布了我们的解决方案。
我想为特定请求向 boto3 添加自定义标头。 我发现了这个：https://github.com/boto/boto3/issues/2251，并使用事件系统添加标题
# First,original model
Call:
lm(formula = mpg ~ cyl + hp + am + gear,data = mtcars)
Residuals:
Min 1Q Median 3Q Max
-5.0835 -1.7594 -0.2023 1.4313 5.6948
Coefficients:
Estimate Std. Error t value Pr(>|t|)
(Intercept) 29.64284 7.02359 4.220 0.000352 ***
cyl -1.04494 0.83565 -1.250 0.224275
hp -0.03913 0.01918 -2.040 0.053525 .
am 4.02895 1.90342 2.117 0.045832 *
gear 0.31413 1.48881 0.211 0.834833
---
Signif. codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1
Residual standard error: 2.947 on 22 degrees of freedom
(5 observations deleted due to missingness)
Multiple R-squared: 0.7998,Adjusted R-squared: 0.7635
F-statistic: 21.98 on 4 and 22 DF,p-value: 2.023e-07
# Second model where we dropped missings manually
Call:
lm(formula = mpg ~ cyl + hp + am + gear,data = mtcars_NA_omit)
Residuals:
Min 1Q Median 3Q Max
-5.0835 -1.7594 -0.2023 1.4313 5.6948
Coefficients:
Estimate Std. Error t value Pr(>|t|)
(Intercept) 29.64284 7.02359 4.220 0.000352 ***
cyl -1.04494 0.83565 -1.250 0.224275
hp -0.03913 0.01918 -2.040 0.053525 .
am 4.02895 1.90342 2.117 0.045832 *
gear 0.31413 1.48881 0.211 0.834833
---
Signif. codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1
Residual standard error: 2.947 on 22 degrees of freedom
Multiple R-squared: 0.7998,p-value: 2.023e-07
您可以尝试对所有请求使用通配符：
def _add_header(request,**kwargs):
request.headers.add_header('x-trace-id','trace-trace')
print(request.headers) # for debug
some_client = boto3.client(service_name=SERVICE_NAME)
event_system = some_client.meta.events
event_system.register_first('before-sign.EVENT_NAME.*',_add_header)
*SERVICE_NAME- 您可以在此处找到所有可用服务：https://boto3.amazonaws.com/v1/documentation/api/latest/reference/services/index.html
有关将函数注册到特定事件的更多信息：https://boto3.amazonaws.com/v1/documentation/api/latest/guide/events.html