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Merge pull request #35 from icyleaf/feature/local-cache
New feature: local cache
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@@ -11,3 +11,4 @@ main.cr | |
# Dependencies will be locked in application that uses them | ||
shard.lock | ||
.history/ | ||
cache/ |
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@@ -4,6 +4,6 @@ version: 0.6.0 | |
authors: | ||
- icyleaf <icyleaf.cn@gmail.com> | ||
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crystal: 0.26.0 | ||
crystal: 0.26.1 | ||
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license: MIT |
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@@ -0,0 +1 @@ | ||
{"name":"foo3"} |
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require "../../spec_helper" | ||
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private struct CacheStruct | ||
getter metadata, body, chain | ||
def initialize(@body : String, @chain : Halite::Feature::Chain, @metadata : Hash(String, JSON::Any)? = nil) | ||
end | ||
end | ||
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private def cache_spec(cache, request, response, use_cache = false, wait_time : (Int32 | Time::Span)? = nil) | ||
FileUtils.rm_rf(cache.path) | ||
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_chain = Halite::Feature::Chain.new(request, nil, Halite::Options.new) do | ||
response | ||
end | ||
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if file = cache.file | ||
chain = cache.intercept(_chain) | ||
body = File.read_lines(file).join("\n") | ||
yield CacheStruct.new(body, chain) | ||
else | ||
key = Digest::MD5.hexdigest("#{request.verb}-#{request.uri}-#{request.body}") | ||
path = File.join(cache.path, key) | ||
metadata_file = File.join(path, "metadata.json") | ||
body_file = File.join(path, "#{key}.cache") | ||
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cache.intercept(_chain) if use_cache | ||
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if seconds = wait_time | ||
sleep seconds | ||
end | ||
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chain = cache.intercept(_chain) | ||
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Dir.exists?(path).should be_true | ||
File.file?(metadata_file).should be_true | ||
File.file?(body_file).should be_true | ||
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metadata = JSON.parse(File.open(metadata_file)).as_h | ||
body = File.read_lines(body_file).join("\n") | ||
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yield CacheStruct.new(body, chain, metadata) | ||
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FileUtils.rm_rf(cache.path) | ||
end | ||
end | ||
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describe Halite::Cache do | ||
it "should register a format" do | ||
Halite.has_feature?("cache").should be_true | ||
Halite.feature("cache").should eq(Halite::Cache) | ||
end | ||
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describe "getters" do | ||
it "should default value" do | ||
feature = Halite::Cache.new | ||
feature.path.should eq(Halite::Cache::DEFAULT_PATH) | ||
feature.expires.should be_nil | ||
feature.debug.should be_true | ||
end | ||
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it "should return setter value" do | ||
feature = Halite::Cache.new(path: "/tmp/cache", expires: 1.day, debug: false) | ||
feature.file.should be_nil | ||
feature.path.should eq("/tmp/cache") | ||
feature.expires.should eq(1.day) | ||
feature.debug.should be_false | ||
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# expires accept Int32/Time::Span but return Time::Span | ||
feature = Halite::Cache.new(expires: 60) | ||
feature.file.should be_nil | ||
feature.path.should eq(Halite::Cache::DEFAULT_PATH) | ||
feature.expires.should eq(1.minutes) | ||
feature.debug.should be_true | ||
end | ||
end | ||
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describe "intercept" do | ||
it "should cache to local storage" do | ||
body = {name: "foo"}.to_json | ||
request = Halite::Request.new("get", SERVER.api("/anything?q=halite1#result"), HTTP::Headers{"Accept" => "application/json"}) | ||
response = Halite::Response.new(request.uri, 200, body, HTTP::Headers{"Content-Type" => "application/json", "Content-Length" => body.size.to_s}) | ||
feature = Halite::Cache.new | ||
feature.file.should be_nil | ||
feature.path.should eq(Halite::Cache::DEFAULT_PATH) | ||
feature.expires.should be_nil | ||
feature.debug.should be_true | ||
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# First return response on HTTP | ||
cache_spec(feature, request, response, use_cache: false) do |result| | ||
result.metadata.not_nil!["status_code"].should eq(200) | ||
result.metadata.not_nil!["headers"].as_h["Content-Type"].should eq("application/json") | ||
result.metadata.not_nil!["headers"].as_h["Content-Length"].should eq(response.body.size.to_s) | ||
result.body.should eq(response.body) | ||
result.chain.result.should eq(Halite::Feature::Chain::Result::Return) | ||
result.chain.response.should eq(response) | ||
end | ||
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# Second return response on Cache | ||
cache_spec(feature, request, response, use_cache: true) do |result| | ||
result.metadata.not_nil!["status_code"].should eq(200) | ||
result.metadata.not_nil!["headers"].as_h["Content-Type"].should eq("application/json") | ||
result.metadata.not_nil!["headers"].as_h["Content-Length"].should eq(response.body.size.to_s) | ||
result.body.should eq(response.body) | ||
result.chain.result.should eq(Halite::Feature::Chain::Result::Return) | ||
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result.chain.response.should_not be_nil | ||
result.chain.response.not_nil!.headers["X-Cached-From"].should eq("cache") | ||
result.chain.response.not_nil!.headers["X-Cached-Key"].should_not eq("") | ||
result.chain.response.not_nil!.headers["X-Cached-At"].should_not eq("") | ||
result.chain.response.not_nil!.headers["X-Cached-Expires-At"].should eq("None") | ||
end | ||
end | ||
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it "should cache without debug mode" do | ||
body = {name: "foo1"}.to_json | ||
request = Halite::Request.new("get", SERVER.api("/anything?q=halite2#result"), HTTP::Headers{"Accept" => "application/json"}) | ||
response = Halite::Response.new(request.uri, 200, body, HTTP::Headers{"Content-Type" => "application/json", "Content-Length" => body.size.to_s}) | ||
feature = Halite::Cache.new(debug: false) | ||
feature.file.should be_nil | ||
feature.path.should eq(Halite::Cache::DEFAULT_PATH) | ||
feature.expires.should be_nil | ||
feature.debug.should be_false | ||
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cache_spec(feature, request, response, use_cache: true) do |result| | ||
result.metadata.not_nil!["status_code"].should eq(200) | ||
result.metadata.not_nil!["headers"].as_h["Content-Type"].should eq("application/json") | ||
result.metadata.not_nil!["headers"].as_h["Content-Length"].should eq(response.body.size.to_s) | ||
result.body.should eq(response.body) | ||
result.chain.result.should eq(Halite::Feature::Chain::Result::Return) | ||
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result.chain.response.should_not be_nil | ||
result.chain.response.not_nil!.headers.has_key?("X-Cached-From").should be_false | ||
result.chain.response.not_nil!.headers.has_key?("X-Cached-Key").should be_false | ||
result.chain.response.not_nil!.headers.has_key?("X-Cached-At").should be_false | ||
end | ||
end | ||
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it "should return no cache if expired" do | ||
body = {name: "foo2"}.to_json | ||
request = Halite::Request.new("get", SERVER.api("/anything?q=halite3#result"), HTTP::Headers{"Accept" => "application/json"}) | ||
response = Halite::Response.new(request.uri, 200, body, HTTP::Headers{"Content-Type" => "application/json", "Content-Length" => body.size.to_s}) | ||
feature = Halite::Cache.new(expires: 1.milliseconds) | ||
feature.file.should be_nil | ||
feature.path.should eq(Halite::Cache::DEFAULT_PATH) | ||
feature.expires.should eq(1.milliseconds) | ||
feature.debug.should be_true | ||
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cache_spec(feature, request, response, use_cache: true, wait_time: 500.milliseconds) do |result| | ||
result.metadata.not_nil!["status_code"].should eq(200) | ||
result.metadata.not_nil!["headers"].as_h["Content-Type"].should eq("application/json") | ||
result.metadata.not_nil!["headers"].as_h["Content-Length"].should eq(response.body.size.to_s) | ||
result.body.should eq(response.body) | ||
result.chain.result.should eq(Halite::Feature::Chain::Result::Return) | ||
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result.chain.response.should_not be_nil | ||
result.chain.response.not_nil!.headers.has_key?("X-Cached-From").should be_false | ||
result.chain.response.not_nil!.headers.has_key?("X-Cached-Key").should be_false | ||
result.chain.response.not_nil!.headers.has_key?("X-Cached-At").should be_false | ||
result.chain.response.not_nil!.headers.has_key?("X-Cached-Expires-At").should be_false | ||
end | ||
end | ||
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it "should load cache from file" do | ||
file = fixture_path("cache_file.json") | ||
body = load_fixture("cache_file.json") | ||
request = Halite::Request.new("get", SERVER.api("/anything?q=halite4#result"), HTTP::Headers{"Accept" => "application/json"}) | ||
response = Halite::Response.new(request.uri, 200, body, HTTP::Headers{"Content-Type" => "application/json", "Content-Length" => body.size.to_s}) | ||
feature = Halite::Cache.new(file: file) | ||
feature.file.should eq(file) | ||
feature.path.should eq(Halite::Cache::DEFAULT_PATH) | ||
feature.expires.should be_nil | ||
feature.debug.should be_true | ||
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cache_spec(feature, request, response, file) do |result| | ||
result.metadata.should be_nil | ||
result.body.should eq(response.body) | ||
result.chain.result.should eq(Halite::Feature::Chain::Result::Return) | ||
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result.chain.response.should_not be_nil | ||
result.chain.response.not_nil!.headers["X-Cached-From"].should eq("file") | ||
result.chain.response.not_nil!.headers.has_key?("X-Cached-Key").should be_false | ||
result.chain.response.not_nil!.headers["X-Cached-At"].should_not eq("") | ||
result.chain.response.not_nil!.headers.has_key?("X-Cached-Expires-At").should be_false | ||
end | ||
end | ||
end | ||
end |
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