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[Home](index.md) | ||
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--- | ||
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# gRPC generator | ||
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Full gRPC generator config | ||
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```yaml | ||
gun: | ||
type: http | ||
target: '[hostname]:443' | ||
timeout: 15s | ||
tls: true | ||
dial_options: | ||
timeout: 1s | ||
authority: string | ||
answlog: | ||
enabled: true | ||
path: ./answ.log | ||
filter: all # all - all http codes, warning - log 4xx and 5xx, error - log only 5xx. Default: error | ||
``` | ||
--- | ||
[Home](index.md) |
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[Home](../index.md) | ||
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--- | ||
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# Scenario generator / gRPC | ||
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- [Configuration](#configuration) | ||
- [Generator](#generator) | ||
- [Provider](#provider) | ||
- [Description of the scenario format](#description-of-the-scenario-format) | ||
- [General principle](#general-principle) | ||
- [HCL example](#hcl-example) | ||
- [YAML example](#yaml-example) | ||
- [Features](#features) | ||
- [Calls](#calls) | ||
- [Templater](#templater) | ||
- [Variable names in templates](#variable-names-in-templates) | ||
- [Preprocessors](#preprocessors) | ||
- [prepare](#prepare) | ||
- [Postprocessors](#postprocessors) | ||
- [assert/response](#assertresponse) | ||
- [Scenarios](#scenarios) | ||
- [Sources](#sources) | ||
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## Configuration | ||
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You need to use a generator and a provider of type `grpc/scenario` | ||
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```yaml | ||
pools: | ||
- id: Pool name | ||
gun: | ||
type: grpc/scenario | ||
target: localhost:8888 | ||
ammo: | ||
type: grpc/scenario | ||
file: payload.hcl | ||
``` | ||
### Generator | ||
The minimum generator configuration is as follows | ||
```yaml | ||
gun: | ||
type: http/scenario | ||
target: localhost:80 | ||
``` | ||
For a scenario gRPC generator, all settings of a regular gRPC generator are supported [gRPC generator](grpc-generator.md) | ||
### Provider | ||
The provider accepts only one parameter - the path to the file with the scenario description | ||
```yaml | ||
ammo: | ||
type: http/scenario | ||
file: payload.hcl | ||
``` | ||
Supports file extensions | ||
- hcl | ||
- yaml | ||
- json | ||
## Description of the scenario format | ||
Supports formats | ||
- hcl | ||
- yaml | ||
- json | ||
### General principle | ||
Several scenarios can be described in a single file. A script has a name by which one scenario differs from another. | ||
A script is a sequence of rpc calls. That is, you will need to describe in the script which calls | ||
should be executed in what order. | ||
The Call is a gRPC call. It has standard gRPC call fields plus additional ones. See [Calls](#calls). | ||
### HCL example | ||
```terraform | ||
variable_source "users" "file/csv" { | ||
file = "users.csv" | ||
fields = ["user_id", "login", "pass"] | ||
ignore_first_line = true | ||
delimiter = "," | ||
} | ||
variable_source "filter_src" "file/json" { | ||
file = "filter.json" | ||
} | ||
variable_source "variables" "variables" { | ||
variables = { | ||
header = "yandex" | ||
b = "s" | ||
} | ||
} | ||
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call "auth_req" { | ||
call = "target.TargetService.Auth" | ||
tag = "auth" | ||
metadata = { | ||
"metadata" = "server.proto" | ||
} | ||
preprocessor "prepare" { | ||
mapping = { | ||
user = "source.users[next]" | ||
} | ||
} | ||
payload = <<EOF | ||
{"login": "{{.request.auth_req.preprocessor.user.login}}", "pass": "{{.request.auth_req.preprocessor.user.pass}}"} | ||
EOF | ||
postprocessor "assert/response" { | ||
payload = ["token"] | ||
status_code = 200 | ||
} | ||
}} | ||
} | ||
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scenario "scenario_name" { | ||
weight = 1 | ||
min_waiting_time = 1000 | ||
requests = [ | ||
"auth_req", | ||
] | ||
} | ||
``` | ||
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You can also see an example in the tests https://github.com/yandex/pandora/blob/dev/tests/grpc_scenario/testdata/grpc_payload.hcl | ||
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### YAML example | ||
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```yaml | ||
variable_sources: | ||
- type: "file/csv" | ||
name: "users" | ||
ignore_first_line: true | ||
delimiter: "," | ||
file: "file.csv" | ||
fields: ["user_id", "login", "pass"] | ||
- type: "file/json" | ||
name: "filter_src" | ||
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calls: | ||
- name: "auth_req" | ||
call: 'target.TargetService.Auth' | ||
tag: auth | ||
method: POST | ||
metadata: | ||
metadata: "server.proto" | ||
preprocessors: | ||
- type: prepare | ||
mapping: | ||
new_var: source.var_name[next].0 | ||
payload: '{"login": "{{.request.auth_req.preprocessor.user.login}}", "pass": "{{.request.auth_req.preprocessor.user.pass}}"}' | ||
postprocessors: | ||
- type: assert/response | ||
payload: ["token"] | ||
status_code: 200 | ||
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scenarios: | ||
- name: scenario_name | ||
weight: 1 | ||
min_waiting_time: 1000 | ||
requests: [ | ||
auth_req | ||
] | ||
``` | ||
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## Features | ||
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### Calls | ||
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Fields | ||
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- call | ||
- tag | ||
- metadata | ||
- preprocessors | ||
- payload | ||
- postprocessors | ||
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### Templater | ||
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The fields `metadata', `payload` are templated. | ||
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The standard go template is used. | ||
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#### Variable names in templates | ||
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Variable names have the full path of their definition. | ||
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For example | ||
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Variable `users` from source `user_file` - `{% raw %}{{{.source.user_file.users}}{% endraw %}` | ||
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Variable `item` from the `list_req` call preprocessor - `{% raw %}{{{.request.list_req.preprocessor.item}}{% endraw %}` | ||
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> Note | ||
> To maintain similarity with http scripts, the response section from the grpc call is saved to the `postprocessor` section | ||
Variable `token` from the `list_req` call is `{% raw %}{{{.request.list_req.postprocessor.token}}{% endraw %}` | ||
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#### Preprocessors | ||
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Preprocessor - actions are performed before templating | ||
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##### prepare | ||
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It is used for creating new variable mapping | ||
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The preprocessor has the ability to work with arrays using modifiers | ||
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- next | ||
- last | ||
- rand | ||
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##### yaml | ||
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```yaml | ||
calls: | ||
- name: req_name | ||
... | ||
preprocessors: | ||
- type: prepare | ||
mapping: | ||
user_id: source.users[next].id | ||
``` | ||
##### hcl | ||
```terraform | ||
call "req_name" { | ||
preprocessor "prepare" { | ||
mapping = { | ||
user_id = "source.users[next].id" | ||
} | ||
} | ||
} | ||
``` | ||
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#### Postprocessors | ||
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##### assert/response | ||
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Checks header and body content | ||
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Upon assertion, further scenario execution is dropped | ||
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```terraform | ||
postprocessor "assert/response" { | ||
payload = ["token"] | ||
status_code = 200 | ||
} | ||
``` | ||
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### Scenarios | ||
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This section repeats the same [scenario in HTTP generator](./scenario-http-generator.md#scenarios) | ||
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The minimum fields for the script are name and list of requests | ||
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```terraform | ||
scenario "scenario_name" { | ||
requests = [ | ||
"list_call", | ||
"order_call", | ||
"order_call", | ||
"order_call" | ||
] | ||
} | ||
``` | ||
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More - [scenario in HTTP generator](./scenario-http-generator.md#scenarios) | ||
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### Sources | ||
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Follow - [Variable sources](scenario/variable_source.md) | ||
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--- | ||
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[Home](../index.md) |
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