feat(agent): Add AWS Lambda Relationship #1023
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agent/lib_aws_sdk_php.c
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| /* Compile the regex */ | ||
| if (NULL == NRPRG(aws_arn_regex)) { | ||
| NRPRG(aws_arn_regex) = nr_regex_create(AWS_ARN_REGEX, 0, 0); |
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Where/when does this get destroyed?
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Can we just precompile this in minit and destroy like wordpress does?
https://github.com/newrelic/newrelic-php-agent/blob/main/agent/fw_wordpress.c#L878-L886
agent/lib_aws_sdk_php.c
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| /* verify arguments */ | ||
| if (NULL == call_args || IS_ARRAY != Z_TYPE_P(call_args)) { | ||
| return; | ||
| } | ||
| zval* lambda_args = nr_php_zend_hash_index_find(Z_ARRVAL_P(call_args), 0); | ||
| if (NULL == lambda_args || IS_ARRAY != Z_TYPE_P(lambda_args)) { | ||
| return; | ||
| } | ||
| zval* lambda_name = nr_php_zend_hash_find(Z_ARRVAL_P(lambda_args), "FunctionName"); | ||
| if (NULL == lambda_name || IS_STRING != Z_TYPE_P(lambda_name)) { | ||
| return; | ||
| } |
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This function will already do all the checking for you and if 'FunctionName' has a valid string value, it will return the value to you .
https://github.com/newrelic/newrelic-php-agent/blob/main/agent/lib_aws_sdk_php.h#L78
agent/lib_aws_sdk_php.c
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| accountID = NRINI(aws_account_id); | ||
| } | ||
| if (nr_strempty(region)) { | ||
| region_zval = nr_php_call(this_obj, "getRegion"); |
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Since the region property exists on the object, instead of doing an nr_php_call here (which has higher overhead), you could use something like:
region_zval
= nr_php_get_zval_object_property(this_obj, "region");
if (!nr_php_is_zval_non_empty_string(region_zval)) {
...
}
| nr_aws_lambda_invoke(NR_EXECUTE_ORIG_ARGS, &cloud_attrs); | ||
| if (!cloud_attrs.cloud_resource_id) { | ||
| /* we do not want to instrument if we cannot reconstruct the ARN */ | ||
| return; |
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I think it's still fine to instrument in this case.
It won't create the relationship, but the external segment can still be created. The cloud attributes are extra attributes, not core external segment attributes.
agent/lib_aws_sdk_php.c
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| external_params.status = Z_LVAL_P(status_code); | ||
| } | ||
| zval* metadata = nr_php_zend_hash_find(Z_ARRVAL_P(data), "@metadata"); | ||
| if (NULL != metadata && IS_REFERENCE == Z_TYPE_P(metadata) |
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Could simplify this a bit by something like just adding this check:
if (IS_REFERENCE == Z_TYPE_P(metadata)) {
metadata = Z_REFVAL_P(metadata);
}
Then the code could look something like:
if (NULL != metadata && IS_REFERENCE == Z_TYPE_P(metadata)) {
metadata = Z_REFVAL_P(metadata);
}
if nr_php_is_zval_valid_array(metadata) {
zval* uri = nr_php_zend_hash_find(Z_ARRVAL_P(metadata), "effectiveUri");
if (nr_php_is_zval_non_empty_string(uri)) {
external_params.uri = Z_STRVAL_P(uri);
}
}
agent/lib_aws_sdk_php.c
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| char* accountID = NULL; | ||
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| /* verify arguments */ | ||
| if (NULL == call_args || IS_ARRAY != Z_TYPE_P(call_args)) { |
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General comment, there are a lot of helper functions for zval here: https://github.com/newrelic/newrelic-php-agent/blob/main/agent/php_zval.h
of the form nr_php_is_zval_* that will already do the NULL and type checking for you for most zval types.
| STD_PHP_INI_ENTRY_EX("newrelic.cloud.aws.account_id", | ||
| "1", | ||
| NR_PHP_REQUEST, | ||
| nr_string_mh, |
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Can this call a function that verifies the string is always 12 chars long (according to the spec).
agent/scripts/newrelic.ini.template
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| ; Info : AWS account id that is used to map entities called | ||
| ; via the AWS SDK. | ||
| ; |
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Instrument AWS Lambda
invokeand reconstruct the ARN to facilitate a complete service map.