Merge pull request #175 from ipfs/ci/circle

ci: switch to circle

.circleci/config.yml

+version: 2.1
+
+orbs:
+  ci-go: ipfs/ci-go@0.1
+
+commands:
+  benchcmp:
+    parameters:
+      before:
+        description: "File containing the old benchmarks."
+        type: string
+      after:
+        description: "File containing the new benchmarks."
+        type: string
+      tolerance:
+        description: "Tolerable slowdown (%)."
+        type: integer
+        default: 25
+    environment:
+      BEFORE: << parameters.before >>
+      AFTER: << parameters.after >>
+    steps:
+      - run:
+          name: "Comparing benchmarks."
+          command: |
+            parse() {
+                sed -n \
+                    -e 's/ *\t */\t/g' \
+                    -e '/^Benchmark/p' |
+                    awk 'BEGIN{print "{\"results\": ["} {print "  {\"name\": \"",$1,"\", \"time\": ",$3," },"} END{print "]}"}' OFS="" ORS=" "|
+                    sed -e 's/, ]/ ]/g' |
+                    jq '.results[] | {name: .name, time: .time }'
+
+            }
+            benchcmp "$BEFORE" "$AFTER"
+            echo ""
+            echo "Result:"
+            {
+                parse < "$BEFORE"
+                parse < "$AFTER"
+            } | jq -e -r -s 'group_by(.name)[] | {name: .[0].name, speedup: (.[0].time / .[1].time)} | select(.speedup < (100 - << parameters.tolerance >>)/100) | "\(.name)\t\(.speedup)x"'
+            if [[ $? -ne 4 ]]; then
+                echo ""
+                echo "FAIL"
+                exit 1
+            else
+                echo "PASS"
+            fi
+
+  benchmark:
+    parameters:
+      output:
+        description: "File to write the results to."
+        type: string
+      branch:
+        description: "Branch to benchmark."
+        type: string
+        default: HEAD
+      command:
+        description: "Benchmark command."
+        type: string
+        default: go test -run=NONE -bench=. ./...
+    steps:
+      - run:
+          name: Check out << parameters.branch >>
+          command: |
+            mkdir /tmp/benchmark
+            git --work-tree=/tmp/benchmark checkout << parameters.branch >>
+      - run:
+          name: "Benchmarking"
+          command: |
+            {
+            << parameters.command >>
+            } | tee << parameters.output >>
+          working_directory: /tmp/benchmark
+          environment:
+            IPFS_LOGGING: critical
+      - run:
+          when: always
+          name: Cleanup
+          command: rm -rf /tmp/benchmark
+
+jobs:
+  benchmark:
+    parameters:
+      tolerance:
+        description: "Tolerable slowdown (%)."
+        type: integer
+        default: 25
+      baseline:
+        description: "Baseline branch to which to compare (if any)."
+        type: string
+        default: ""
+      command:
+        description: "Benchmark command."
+        type: string
+        default: go test -run=NONE -bench=. ./...
+    executor: ci-go/default
+    steps:
+      - checkout
+      - ci-go/restore-cache
+      - benchmark:
+          command: << parameters.command >>
+          branch: master
+          output: ~/benchmark-before.txt
+      - benchmark:
+          command: << parameters.command >>
+          output: ~/benchmark-after.txt
+      - benchcmp:
+          before: ~/benchmark-before.txt
+          after: ~/benchmark-after.txt
+          tolerance: << parameters.tolerance >>
+      - when:
+          condition: << parameters.baseline >>
+          steps:
+            - benchmark:
+                command: << parameters.command >>
+                branch: << parameters.baseline >>
+                output: ~/benchmark-baseline.txt
+            - benchcmp:
+                before: ~/benchmark-baseline.txt
+                after: ~/benchmark-after.txt
+                tolerance: << parameters.tolerance >>
+      - ci-go/save-cache
+
+workflows:
+  version: 2
+  test:
+    jobs:
+    - ci-go/build
+    - ci-go/lint
+    - ci-go/test
+    - benchmark:
+        require: ci-go/test