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doc: examples use declarative configuration 4/N #370

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10 changes: 0 additions & 10 deletions ci/build-examples.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -202,7 +202,6 @@ steps:
waitFor: ['gcf-builder-ready']
id: 'site-env_vars'
args: ['build',
'--env', 'GOOGLE_FUNCTION_SIGNATURE_TYPE=http',
'--env', 'GOOGLE_FUNCTION_TARGET=env_vars',
'--path', 'examples/site/env_vars',
'site-env_vars',
Expand All @@ -211,7 +210,6 @@ steps:
waitFor: ['gcf-builder-ready']
id: 'site-hello_world_error'
args: ['build',
'--env', 'GOOGLE_FUNCTION_SIGNATURE_TYPE=http',
'--env', 'GOOGLE_FUNCTION_TARGET=hello_world_error',
'--path', 'examples/site/hello_world_error',
'site-hello_world_error',
Expand All @@ -220,7 +218,6 @@ steps:
waitFor: ['gcf-builder-ready']
id: 'site-hello_world_get'
args: ['build',
'--env', 'GOOGLE_FUNCTION_SIGNATURE_TYPE=http',
'--env', 'GOOGLE_FUNCTION_TARGET=hello_world_get',
'--path', 'examples/site/hello_world_get',
'site-hello_world_get',
Expand Down Expand Up @@ -253,7 +250,6 @@ steps:
waitFor: ['gcf-builder-ready']
id: 'site-http_content'
args: ['build',
'--env', 'GOOGLE_FUNCTION_SIGNATURE_TYPE=http',
'--env', 'GOOGLE_FUNCTION_TARGET=http_content',
'--path', 'examples/site/http_content',
'site-http_content',
Expand All @@ -262,7 +258,6 @@ steps:
waitFor: ['gcf-builder-ready']
id: 'site-http_cors'
args: ['build',
'--env', 'GOOGLE_FUNCTION_SIGNATURE_TYPE=http',
'--env', 'GOOGLE_FUNCTION_TARGET=http_cors',
'--path', 'examples/site/http_cors',
'site-http_cors',
Expand All @@ -271,7 +266,6 @@ steps:
waitFor: ['gcf-builder-ready']
id: 'site-http_cors_auth'
args: ['build',
'--env', 'GOOGLE_FUNCTION_SIGNATURE_TYPE=http',
'--env', 'GOOGLE_FUNCTION_TARGET=http_cors_auth',
'--path', 'examples/site/http_cors_auth',
'site-http_cors_auth',
Expand All @@ -280,7 +274,6 @@ steps:
waitFor: ['gcf-builder-ready']
id: 'site-http_form_data'
args: ['build',
'--env', 'GOOGLE_FUNCTION_SIGNATURE_TYPE=http',
'--env', 'GOOGLE_FUNCTION_TARGET=http_form_data',
'--path', 'examples/site/http_form_data',
'site-http_form_data',
Expand All @@ -289,7 +282,6 @@ steps:
waitFor: ['gcf-builder-ready']
id: 'site-http_method'
args: ['build',
'--env', 'GOOGLE_FUNCTION_SIGNATURE_TYPE=http',
'--env', 'GOOGLE_FUNCTION_TARGET=http_method',
'--path', 'examples/site/http_method',
'site-http_method',
Expand All @@ -298,7 +290,6 @@ steps:
waitFor: ['gcf-builder-ready']
id: 'site-http_xml'
args: ['build',
'--env', 'GOOGLE_FUNCTION_SIGNATURE_TYPE=http',
'--env', 'GOOGLE_FUNCTION_TARGET=http_xml',
'--path', 'examples/site/http_xml',
'site-http_xml',
Expand All @@ -307,7 +298,6 @@ steps:
waitFor: ['gcf-builder-ready']
id: 'site-log_helloworld'
args: ['build',
'--env', 'GOOGLE_FUNCTION_SIGNATURE_TYPE=http',
'--env', 'GOOGLE_FUNCTION_TARGET=log_helloworld',
'--path', 'examples/site/log_helloworld',
'site-log_helloworld',
Expand Down
13 changes: 7 additions & 6 deletions examples/site/env_vars/env_vars.cc
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Expand Up @@ -13,15 +13,16 @@
// limitations under the License.

// [START functions_env_vars]
#include <google/cloud/functions/http_request.h>
#include <google/cloud/functions/http_response.h>
#include <google/cloud/functions/function.h>
#include <cstdlib>

namespace gcf = ::google::cloud::functions;

gcf::HttpResponse env_vars(gcf::HttpRequest /*request*/) { // NOLINT
char const* value = std::getenv("FOO");
if (value == nullptr) value = "FOO environment variable is not set";
return gcf::HttpResponse{}.set_payload(value);
gcf::Function env_vars() {
return gcf::MakeFunction([](gcf::HttpRequest const& /*request*/) {
char const* value = std::getenv("FOO");
if (value == nullptr) value = "FOO environment variable is not set";
return gcf::HttpResponse{}.set_payload(value);
});
}
// [END functions_env_vars]
63 changes: 31 additions & 32 deletions examples/site/hello_world_error/hello_world_error.cc
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Expand Up @@ -13,46 +13,45 @@
// limitations under the License.

// [START functions_helloworld_error]
#include <google/cloud/functions/http_request.h>
#include <google/cloud/functions/http_response.h>
#include <google/cloud/functions/function.h>
#include <nlohmann/json.hpp>
#include <iostream>

namespace gcf = ::google::cloud::functions;

// Though not used in this example, the request is passed by value to support
// applications that move-out its data.
gcf::HttpResponse hello_world_error(gcf::HttpRequest request) { // NOLINT
if (request.target() == "/return500") {
// An error response code does NOT create entries in Error Reporting
return gcf::HttpResponse{}.set_result(
gcf::HttpResponse::kInternalServerError);
}
// Unstructured logs to stdout and/or stderr do NOT create entries in Error
// Reporting
std::cout << "An error occurred (stdout)\n";
std::cerr << "An error occurred (stderr)\n";
gcf::Function hello_world_error() {
return gcf::MakeFunction([](gcf::HttpRequest const& request) {
if (request.target() == "/return500") {
// An error response code does NOT create entries in Error Reporting
return gcf::HttpResponse{}.set_result(
gcf::HttpResponse::kInternalServerError);
}
// Unstructured logs to stdout and/or stderr do NOT create entries in Error
// Reporting
std::cout << "An error occurred (stdout)\n";
std::cerr << "An error occurred (stderr)\n";

if (request.target() == "/throw/exception") {
// Throwing an exception WILL create new entries in Error Reporting
throw std::runtime_error("I failed you");
}
if (request.target() == "/throw/exception") {
// Throwing an exception WILL create new entries in Error Reporting
throw std::runtime_error("I failed you");
}

// Structured logs MAY create entries in Error Reporting depending on their
// severity. You can create structured logs manually (as shown here), or using
// your favorite logging library with suitable formatting.
std::cerr << nlohmann::json{{"severity", "info"},
{"message", "informational message"}}
.dump()
<< std::endl;
// Structured logs MAY create entries in Error Reporting depending on their
// severity. You can create structured logs manually (as shown here), or
// using your favorite logging library with suitable formatting.
std::cerr << nlohmann::json{{"severity", "info"},
{"message", "informational message"}}
.dump()
<< std::endl;

std::cerr << nlohmann::json{{"severity", "error"},
{"message", "an error message"}}
.dump()
<< std::endl;
std::cerr << nlohmann::json{{"severity", "error"},
{"message", "an error message"}}
.dump()
<< std::endl;

return gcf::HttpResponse{}
.set_header("content-type", "text/plain")
.set_payload("Hello World!");
return gcf::HttpResponse{}
.set_header("content-type", "text/plain")
.set_payload("Hello World!");
});
}
// [END functions_helloworld_error]
15 changes: 7 additions & 8 deletions examples/site/hello_world_get/hello_world_get.cc
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Expand Up @@ -13,16 +13,15 @@
// limitations under the License.

// [START functions_helloworld_get]
#include <google/cloud/functions/http_request.h>
#include <google/cloud/functions/http_response.h>
#include <google/cloud/functions/function.h>

namespace gcf = ::google::cloud::functions;

// Though not used in this example, the request is passed by value to support
// applications that move-out its data.
gcf::HttpResponse hello_world_get(gcf::HttpRequest) { // NOLINT
return gcf::HttpResponse{}
.set_header("content-type", "text/plain")
.set_payload("Hello World!");
gcf::Function hello_world_get() {
return gcf::MakeFunction([](gcf::HttpRequest const&) {
return gcf::HttpResponse{}
.set_header("content-type", "text/plain")
.set_payload("Hello World!");
});
}
// [END functions_helloworld_get]
39 changes: 20 additions & 19 deletions examples/site/http_content/http_content.cc
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Expand Up @@ -13,8 +13,7 @@
// limitations under the License.

// [START functions_http_content]
#include <google/cloud/functions/http_request.h>
#include <google/cloud/functions/http_response.h>
#include <google/cloud/functions/function.h>
#include <nlohmann/json.hpp>
#include <charconv>
#include <map>
Expand All @@ -29,25 +28,27 @@ std::map<std::string, std::string> parse_www_form_urlencoded(
std::string const& text);
} // namespace

gcf::HttpResponse http_content(gcf::HttpRequest request) { // NOLINT
std::string name;
auto const& headers = request.headers();
if (auto f = headers.find("content-type"); f != headers.end()) {
if (f->second == "application/json") {
name = nlohmann::json::parse(request.payload()).value("name", "");
} else if (f->second == "application/octet-stream" ||
f->second == "text/plain") {
name = request.payload(); // treat contents as a string
} else if (f->second == "application/x-www-form-urlencoded") {
// Use your preferred parser, here we use some custom code.
auto form = parse_www_form_urlencoded(request.payload());
name = form["name"];
gcf::Function http_content() {
return gcf::MakeFunction([](gcf::HttpRequest const& request) {
std::string name;
auto const& headers = request.headers();
if (auto f = headers.find("content-type"); f != headers.end()) {
if (f->second == "application/json") {
name = nlohmann::json::parse(request.payload()).value("name", "");
} else if (f->second == "application/octet-stream" ||
f->second == "text/plain") {
name = request.payload(); // treat contents as a string
} else if (f->second == "application/x-www-form-urlencoded") {
// Use your preferred parser, here we use some custom code.
auto form = parse_www_form_urlencoded(request.payload());
name = form["name"];
}
}
}

return gcf::HttpResponse{}
.set_header("content-type", "text/plain")
.set_payload("Hello " + name);
return gcf::HttpResponse{}
.set_header("content-type", "text/plain")
.set_payload("Hello " + name);
});
}
// [END functions_http_content]

Expand Down
35 changes: 18 additions & 17 deletions examples/site/http_cors/http_cors.cc
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Expand Up @@ -13,27 +13,28 @@
// limitations under the License.

// [START functions_http_cors]
#include <google/cloud/functions/http_request.h>
#include <google/cloud/functions/http_response.h>
#include <google/cloud/functions/function.h>

namespace gcf = ::google::cloud::functions;

gcf::HttpResponse http_cors(gcf::HttpRequest request) { // NOLINT
// Set CORS headers for preflight request
if (request.verb() == "OPTIONS") {
// Allows GET requests from any origin with the Content-Type header and
// caches preflight response for an 3600s
gcf::Function http_cors() {
return gcf::MakeFunction([](gcf::HttpRequest const& request) {
// Set CORS headers for preflight request
if (request.verb() == "OPTIONS") {
// Allows GET requests from any origin with the Content-Type header and
// caches preflight response for an 3600s
return gcf::HttpResponse{}
.set_result(gcf::HttpResponse::kNoContent)
.set_header("Access-Control-Allow-Origin", "*")
.set_header("Access-Control-Allow-Methods", "GET")
.set_header("Access-Control-Allow-Headers", "Content-Type")
.set_header("Access-Control-Max-Age", "3600");
}

return gcf::HttpResponse{}
.set_result(gcf::HttpResponse::kNoContent)
.set_header("Access-Control-Allow-Origin", "*")
.set_header("Access-Control-Allow-Methods", "GET")
.set_header("Access-Control-Allow-Headers", "Content-Type")
.set_header("Access-Control-Max-Age", "3600");
}

return gcf::HttpResponse{}
.set_header("Access-Control-Allow-Origin", "*")
.set_header("content-type", "text/plain")
.set_payload("Hello World!");
.set_header("content-type", "text/plain")
.set_payload("Hello World!");
});
}
// [END functions_http_cors]
39 changes: 20 additions & 19 deletions examples/site/http_cors_auth/http_cors_auth.cc
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Expand Up @@ -13,29 +13,30 @@
// limitations under the License.

// [START functions_http_cors_auth]
#include <google/cloud/functions/http_request.h>
#include <google/cloud/functions/http_response.h>
#include <google/cloud/functions/function.h>

namespace gcf = ::google::cloud::functions;

gcf::HttpResponse http_cors_auth(gcf::HttpRequest request) { // NOLINT
// Set CORS headers for preflight request
if (request.verb() == "OPTIONS") {
// Allows GET requests from any origin with the Content-Type header and
// caches preflight response for an 3600s
gcf::Function http_cors_auth() {
return gcf::MakeFunction([](gcf::HttpRequest const& request) {
// Set CORS headers for preflight request
if (request.verb() == "OPTIONS") {
// Allows GET requests from any origin with the Content-Type header and
// caches preflight response for an 3600s
return gcf::HttpResponse{}
.set_result(gcf::HttpResponse::kNoContent)
.set_header("Access-Control-Allow-Origin", "https://mydomain.com")
.set_header("Access-Control-Allow-Methods", "GET")
.set_header("Access-Control-Allow-Headers", "Authorization")
.set_header("Access-Control-Max-Age", "3600")
.set_header("Access-Control-Allow-Credentials", "true");
}

return gcf::HttpResponse{}
.set_result(gcf::HttpResponse::kNoContent)
.set_header("Access-Control-Allow-Origin", "https://mydomain.com")
.set_header("Access-Control-Allow-Methods", "GET")
.set_header("Access-Control-Allow-Headers", "Authorization")
.set_header("Access-Control-Max-Age", "3600")
.set_header("Access-Control-Allow-Credentials", "true");
}

return gcf::HttpResponse{}
.set_header("Access-Control-Allow-Origin", "https://mydomain.com")
.set_header("Access-Control-Allow-Credentials", "true")
.set_header("content-type", "text/plain")
.set_payload("Hello World!");
.set_header("Access-Control-Allow-Credentials", "true")
.set_header("content-type", "text/plain")
.set_payload("Hello World!");
});
}
// [END functions_http_cors_auth]
9 changes: 6 additions & 3 deletions examples/site/http_form_data/http_form_data.cc
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Expand Up @@ -13,8 +13,7 @@
// limitations under the License.

// [START functions_http_form_data]
#include <google/cloud/functions/http_request.h>
#include <google/cloud/functions/http_response.h>
#include <google/cloud/functions/function.h>
#include <absl/strings/str_split.h>
#include <absl/strings/string_view.h>
#include <nlohmann/json.hpp>
Expand Down Expand Up @@ -59,7 +58,7 @@ class FormDataDelimiter {

} // namespace

gcf::HttpResponse http_form_data(gcf::HttpRequest request) {
gcf::HttpResponse http_form_data_impl(gcf::HttpRequest request) {
if (request.verb() != "POST") {
return gcf::HttpResponse{}.set_result(gcf::HttpResponse::kMethodNotAllowed);
}
Expand Down Expand Up @@ -118,6 +117,10 @@ gcf::HttpResponse http_form_data(gcf::HttpRequest request) {
.set_header("content-type", "application/json")
.set_payload(result.dump());
}

gcf::Function http_form_data() {
return gcf::MakeFunction(http_form_data_impl);
}
// [END functions_http_form_data]

namespace {
Expand Down
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